MoS2 nanoplates assembled on electrospun polyacrylonitrile-metal organic framework-derived carbon fibers for lithium storage
Publication date: July 2019Source: Nano Energy, Volume 61Author(s): Chuan-Ling Zhang, Zhi-Hao Jiang, Bing-Rong Lu, Jiang-Tao Liu, Fu-Hu Cao, Hao Li, Zhi-Long Yu, Shu-Hong YuAbstractMolybdenum disulfide (MoS2) has been intensively investigated for its high theoretical capacity as an advanced anode material for lithium storage. However, the low electronic conductivity and frail layered structure give rise to its poor cycling stability and low rate performance. Herein, by taking advantages of the porous structure and the high N content of metal-organic frameworks (MOFs) derivatives, a facile and scalable method combining elec...
Source: Nano Energy - April 20, 2019 Category: Nanotechnology Source Type: research

Hysteretic order-disorder transitions of ionic liquid double layer structure on graphite
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Wan-Yu Tsai, Jeremy Come, Wei Zhao, Runxi Wang, Guang Feng, Bishnu Prasad Thapaliya, Sheng Dai, Liam Collins, Nina BalkeAbstractUnderstanding the electrical double layer (EDL) structure at the solid/liquid interface is critical towards realizing the full potential of electrochemical applications using ionic liquids. In this work, the out-of-plane and in-plane EDL structures of PYR14-TFSI on graphite (HOPG) have been studied by in-situ electrochemical atomic force microscopy (AFM) and molecular dynamics (MD) simulation. AFM results revealed that the first a...
Source: Nano Energy - April 18, 2019 Category: Nanotechnology Source Type: research

Fully stretchable triboelectric nanogenerator for energy harvesting and self-powered sensing
Publication date: July 2019Source: Nano Energy, Volume 61Author(s): Xunjia Li, Chengmei Jiang, Fengnian Zhao, Lingyi Lan, Yao Yao, Yonghua Yu, Jianfeng Ping, Yibin YingAbstractIn this work, a fully stretchable triboelectric nanogenerator (FSTENG) composed of an electrospun electrode and a porous PDMS friction layer with anti-nickel foam structure was fabricated. This FSTENG can deliver an optimal output voltage of 92 V, which is ten times greater than that of the TENG based on flat PDMS film. The superior performance is attributed to the use of anti-nickel foam structure-based porous PDMS film in FSTENG, which enhances t...
Source: Nano Energy - April 18, 2019 Category: Nanotechnology Source Type: research

Atomically-thin Bi2MoO6 nanosheets with vacancy pairs for improved photocatalytic CO2 reduction
Publication date: July 2019Source: Nano Energy, Volume 61Author(s): Jun Di, Xiaoxu Zhao, Cheng Lian, Mengxia Ji, Jiexiang Xia, Jun Xiong, Wu Zhou, Xingzhong Cao, Yuanbin She, Honglai Liu, Kian Ping Loh, Stephen J. Pennycook, Huaming Li, Zheng LiuAbstractExploring efficient strategies to increase CO2 photoreduction performance is a key challenge in the energy conversion field. Herein, a cooperative role involving an ultrathin 2D structure and surface defects is employed to design defective Bi2MoO6 ultrathin nanosheets, to boost the CO2 photoreduction activity under water with no sacrificial agent, co-catalyst or extra photo...
Source: Nano Energy - April 18, 2019 Category: Nanotechnology Source Type: research

Hematite nanostructures: An old material for a new story. Simultaneous photoelectrochemical oxidation of benzylamine and hydrogen production through Ti doping
This study contributes to overcome the 40-year lasting issues limiting the use of hematite in industrial photoelectrochemical sunlight conversion and storage, due to poor performance of hematite and lack of economic value of oxygen production, providing solid evidence for the use of hematite in alternative oxidation reactions of industrial importance.Graphical abstract (Source: Nano Energy)
Source: Nano Energy - April 18, 2019 Category: Nanotechnology Source Type: research

Thermoelectric Cu-doped (Bi,Sb)2Te3: Performance enhancement and stability against high electric current pulse
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Hua-Lu Zhuang, Yu Pan, Fu-Hua Sun, Jinfeng Dong, Jun Pei, Asfandiyar, Bowen Cai, Haihua Hu, Huaichao Tang, Jing-Feng LiAbstractP-type Bi2-xSbxTe3 is one of the most mature and widely used thermoelectric (TE) materials. Enhancing its performance is important and has generated significant research attention, with studies ranging from chemical doping to various fabrication processes. In this work, we applied a method combining mechanical alloying and spark plasma sintering to synthesize Cu-doped Bi0.3Sb1.7Te3. By adjusting the doping amount of Cu, the electri...
Source: Nano Energy - April 17, 2019 Category: Nanotechnology Source Type: research

Protecting lithium/sodium metal anode with metal-organic framework based compact and robust shield
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Ji Qian, Yu Li, Menglu Zhang, Rui Luo, Fujie Wang, Yusheng Ye, Yi Xing, Wanlong Li, Wenjie Qu, Lili Wang, Li Li, Yuejiao Li, Feng Wu, Renjie ChenAbstractLithium metal is an ideal anode material for next-generation electrical energy storage because of its high specific capacity. However, uncontrolled growth of Li dendrites during deposition and stripping processes results in low coulombic efficiency and severe safety concerns. Here we report a porous and robust coating of metal-organic framework (MOF-199), which could physically suppress the growth of lithi...
Source: Nano Energy - April 17, 2019 Category: Nanotechnology Source Type: research

Investigation of diamond-like carbon films as a promising dielectric material for triboelectric nanogenerator
This study serves as a noteworthy beginning towards the understanding of the triboelectric behavior of DLC films from TENGs perspective and could significantly contribute to designing of a highly durable, cost-effective, low friction and efficient sliding-TENG.Graphical abstract (Source: Nano Energy)
Source: Nano Energy - April 17, 2019 Category: Nanotechnology Source Type: research

0D/2D AgInS2/MXene Z-scheme heterojunction nanosheets for improved ammonia photosynthesis of N2
Publication date: July 2019Source: Nano Energy, Volume 61Author(s): Jiangzhou Qin, Xia Hu, Xinyong Li, Zhifan Yin, Baojun Liu, Kwok-ho LamAbstractIn order to explore efficient photocatalysts for N2 reduction reaction (NRR), 0D AgInS2 nanoparticles and 2D MXene (Ti3C2) nanosheets with different mass ratios are employed for building Z-scheme heterostructures. The resultant hybrids exhibit excellent interfacial charge transfer ability according to their optical and photo-electro properties. As a result, the obtained composite (30 wt% AgInS2) shows significant improvement on the photocatalytic performance for N2 fixation wit...
Source: Nano Energy - April 17, 2019 Category: Nanotechnology Source Type: research

Layer-by-layer printing of multi-layered heterostructures using Li4Ti5O12 and Si for high power Li-Ion storage
Publication date: Available online 16 April 2019Source: Nano EnergyAuthor(s): Sang Ho Lee, Chun Huang, Patrick S. GrantAbstractHeterogeneous, multi-layered electrodes based on high power Li4Ti5O12 interleaved with a smaller fraction of high capacity Si were fabricated using layer-by-layer spray printing, with the goal of achieving a balance of power and capacity for Li-ion storage technologies. The faradaic charge/discharge behavior of the multi-layered hybrid electrodes was investigated as a function of (i) the thickness of the discrete Si layer within the multi-layered electrode, and (ii) the location of the Si layer wit...
Source: Nano Energy - April 16, 2019 Category: Nanotechnology Source Type: research

A fully packed water-proof, humidity resistant triboelectric nanogenerator for transmitting Morse code
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Arunkumar Chandrasekhar, Venkateswaran Vivekananthan, Gaurav Khandelwal, Sang Jae KimAbstractTriboelectric nanogenerators (TENG) are widely reported for harnessing and utilization of waste energy. The external influence such as relative humidity is well informed to influence the output performance of TENG which makes it unsuitable for various applications. Herein, we demonstrated a full packed waterproof WP-TENG in a vertical contact-separation mode using PDMS and nickel foam as tribo-active material. The obtained output voltage and short-circuit current w...
Source: Nano Energy - April 16, 2019 Category: Nanotechnology Source Type: research

Thermionic-enhanced near-field thermophotovoltaics
We present the theoretical analysis of a device in which photons and electrons travel from a hot LaB6-coated tungsten emitter to a closely spaced BaF2-coated InGaAs photovoltaic cell. Photon tunnelling and space charge removal across the nanoscale vacuum gap produce a drastic increase in flux of electrons and photons, and subsequently, of the generated electrical power density. We show that conversion efficiencies and electrical power densities of ∼ 30% and ∼ 70 W/cm2 are achievable at 2000 K for a practicable gap distance of 100 nm, and thus greatly enhance the performances of stand-alone near-field thermophot...
Source: Nano Energy - April 16, 2019 Category: Nanotechnology Source Type: research

Ni-Co-N hybrid porous nanosheets on graphene paper for flexible and editable asymmetric all-solid-state supercapacitors
In this study, the porous Ni-Co-N nanosheets on flexible graphene paper (GP) are prepared by surface nitridation of NiCo2O4 nanosheets. Compared with NiCo2O4/GP, Ni3N/GP and CoN/GP, Ni-Co-N/GP shows superior performance in terms of specific capacitance of 960 F/g (48.1 mF/cm2) at 4 A/g, rate performance (86% capacitance retention) and cycle life (the capacitance retention reaches 95% over 5000 cycles). The paper-based all-solid-state asymmetric supercapacitors (SCs) are manufactured based on Ni-Co-N/GP and chemical oxidized GP (graphene oxide paper, GOP), which exhibits excellent bendability, flexibility, editability. Th...
Source: Nano Energy - April 16, 2019 Category: Nanotechnology Source Type: research

Remarkable merits of triboelectric nanogenerator than electromagnetic generator for harvesting small-amplitude mechanical energy
Publication date: Available online 15 April 2019Source: Nano EnergyAuthor(s): Junqing Zhao, Gaowei Zhen, Guoxu Liu, Tianzhao Bu, Wenbo Liu, Xianpeng Fu, Ping Zhang, Chi Zhang, Zhong Lin WangAbstractTriboelectric nanogenerator (TENG) is a new energy technology that is as important as traditional electromagnetic generator (EMG) for converting mechanical energy into electricity, which shows great advantages of simple structure, high power density and low-frequency. Here, the effects of motion amplitude for both generators are first taken into consideration. Our result demonstrates that the TENG has a much better performance t...
Source: Nano Energy - April 16, 2019 Category: Nanotechnology Source Type: research

Scalable and robust bilayer polymer foams for highly efficient and stable solar desalination
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Chenwei Li, Degang Jiang, Bingbing Huo, Meichun Ding, Congcong Huang, Dedong Jia, Haoxiang Li, Chen-Yang Liu, Jingquan LiuAbstractSolar-driven vaporization devices are often hindered by complex fabrication process, low efficiency, poor durability, and non-reusability. Herein, based on the pre-pressed melamine foam (MF), we have fabricated a scalable, low cost, and durable bilayer polymer foam for efficient and stable solar steam generation. Making use of the bilayer structure, different functions are assigned to different layers, with polypyrrole (PPy) coa...
Source: Nano Energy - April 16, 2019 Category: Nanotechnology Source Type: research

Nitrogen-coordinated single iron atom catalysts derived from metal organic frameworks for oxygen reduction reaction
Publication date: Available online 11 April 2019Source: Nano EnergyAuthor(s): Fei Xiao, Gui-Liang Xu, Cheng-Jun Sun, Mingjie Xu, Wen Wen, Qi Wang, Meng Gu, Shangqian Zhu, Yueying Li, Zidong Wei, Xiaoqing Pan, Jiangan Wang, Khalil Amine, Minhua ShaoAbstractIron and nitrogen co-doped carbon (Fe-N-C) catalysts hold great promise to replace platinum group metal used for the oxygen reduction reaction (ORR) in low-temperature fuel cells. However, general synthesis routes require tedious acid washing and extensive heat treatment, usually resulting in uncontrollable morphologies and undesirable compounds. In this work, a zeolitic ...
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Seeding lithium seeds towards uniform lithium deposition for stable lithium metal anodes
Publication date: Available online 11 April 2019Source: Nano EnergyAuthor(s): Zhijia Huang, Guangmin Zhou, Wei Lv, Yaqian Deng, Yunbo Zhang, Chen Zhang, Feiyu Kang, Quan-Hong YangAbstractLithium (Li) metal has been regarded as one of the most attractive anodes for high-energy-density batteries. However, the practical use of Li metal anode is hindered by the safety issues of Li dendrite growth caused by the non-uniform Li deposition. The initial Li nucleation behavior plays an important role in the Li deposition process, which guides the following Li growth structure. Herein, we show a simple method to plant the ultrafine L...
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Energy-saving hydrogen production coupling urea oxidation over a bifunctional nickel-molybdenum nanotube array
Publication date: Available online 12 April 2019Source: Nano EnergyAuthor(s): Jun-Ye Zhang, Ting He, Mingda Wang, Ruijuan Qi, Ya Yan, Zehua Dong, Hongfang Liu, Hongming Wang, Bao Yu XiaAbstractHydrogen production via water electrolysis is promising but impeded by sluggish cathodic and anodic reactions. Consequently, highly-efficient and earth-abundant electrocatalysts are attracting considerable attention. Herein we report a bifunctional NiMo alloy nanotube for efficient hydrogen production coupled with anodic urea oxidation in a hybrid water electrolysis system. Specifically, ultralow potentials of −44 mV and 1.36...
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Ultra-long life rechargeable zinc-air battery based on high-performance trimetallic nitride and NCNT hybrid bifunctional electrocatalysts
Publication date: Available online 13 April 2019Source: Nano EnergyAuthor(s): Mingjie Wu, Gaixia Zhang, Jinli Qiao, Ning Chen, Weifeng Chen, Shuhui SunAbstractOxygen reduction reaction (ORR) and oxygen evolution reaction (OER) bifunctional electrocatalysts are essential for rechargeable zinc-air batteries. Here, a novel design strategy is demonstrated for developing highly dispersed Fe2Ni2N/Co trimetallic nitride nanocrystals strongly coupled with N-doped carbon nanotubes (Fe2Ni2N/Co@NCNT). This unique hybrid catalyst exhibits superior electrocatalytic activity and stability toward both ORR and OER over most reported non-n...
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Crepe cellulose paper and nitrocellulose membrane-based triboelectric nanogenerators for energy harvesting and self-powered human-machine interaction
This study not only combines the advantages of CCP and NCM to produce high-performance P-TENGs, but also demonstrates the feasibility of using commercially available products to prepare green and sustainable electronics.Graphical abstract (Source: Nano Energy)
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Thermally stable methylammonium-free inverted perovskite solar cells with Zn2+ doped CuGaO2 as efficient mesoporous hole-transporting layer
Publication date: Available online 13 April 2019Source: Nano EnergyAuthor(s): Yu Chen, Zhou Yang, Xuguang Jia, Yihui Wu, Ningyi Yuan, Jianning Ding, Wen-Hua Zhang, Shengzhong (Frank) LiuAbstractDespite incredible success has been achieved for perovskite solar cells (PSCs) in pursuing high power conversion efficiency (PCE), their practical application is prevented by the low stability issues, especially an accelerating stability test at high temperature still needs to be demonstrated. Herein, we present an inverted mesoscopic PSCs with Zn2+ doped CuGaO2 (Zn:CuGaO2) as both the scaffold and hole transporting materials (HTM)....
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Enhancing the crystallinity and perfecting the orientation of formamidinium tin iodide for highly efficient Sn-based perovskite solar cells
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Shuyan Shao, Jingjin Dong, Herman Duim, Gert H. ten Brink, Graeme R. Blake, Giuseppe Portale, Maria Antonietta LoiAbstractLow power conversion efficiency (PCE) and poor reproducibility are among the main challenges for tin-based perovskite solar cells (HPSCs). The facile formation of tin vacancies and oxidation of the divalent tin cation during the thin film fabrication process are among the causes of these problems, because the tin perovskite layer then becomes p-doped, resulting in significant trap-assisted recombination losses in devices. In this paper,...
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Role of aluminum and HMTA in the hydrothermal synthesis of two-dimensional n-doped ZnO nanosheets
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Gonzalo Murillo, Edgardo Leon-Salguero, Paulina R. Martínez-Alanis, Jaume Esteve, Josefina Alvarado-Rivera, Frank GüellAbstractThis work reports the study of the processes behind the growth of two-dimensional (2D) n-doped ZnO nanostructures on an AlN layer. We have demonstrated that AlN undergoes a slow dissociation process due to the basic controlled environment promoted by the hexamethylenetetramine (HMTA). The Al(OH)4- ions created inhibits the growth along the c-axis, effectively promoting the fast formation of a planar geometry selectively...
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Artificial photosynthesis of ethanol using type-II g-C3N4/ZnTe heterojunction in photoelectrochemical CO2 reduction system
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Qinglong Wang, Xikui Wang, Zehui Yu, Xingxing Jiang, Jinjin Chen, Leiming Tao, Mingkui Wang, Yan ShenAbstractConstructing heterojunctions and designing advanced structures to mimic natural photosynthesis is an effective route to convert CO2 into high-energy chemicals with high efficiency and selectivity. Compared to a single-component catalyst, those of two components with different function can corporately facilitate the formation of C2 products. Herein, a type-II heterojunction based on graphitic carbon nitride (g-C3N4)/ZnTe was constructed for the first...
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Graphene/p-AlGaN/p-GaN electron tunnelling light emitting diodes with high external quantum efficiency
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Sirui Feng, Binzhong Dong, Yanghua Lu, Lingfeng Yin, Bailin Wei, Jiangbo Wang, Shisheng LinAbstractThe realization of p-type conduction in GaN and commercialized GaN light-emitting diodes (LED) is accepted as an advance in the development of human society. Conventionally, LED is based on PN junction and the quantum wells are introduced for confining electrons and holes, which improves the external quantum efficiency (EQE). Herein, we realized a graphene/AlGaN/GaN LED emitting double peaks at 430 nm and 560 nm. The blue peak at 430 nm is originated fr...
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Self-powered intelligent buoy system by water wave energy for sustainable and autonomous wireless sensing and data transmission
Publication date: July 2019Source: Nano Energy, Volume 61Author(s): Fengben Xi, Yaokun Pang, Guoxu Liu, Shuwei Wang, Wei Li, Chi Zhang, Zhong Lin WangAbstractHarvesting ocean wave energy is a killer application of triboelectric nanogenerator (TENG) for advantages in simple mechanism, high power density and high efficiency at low frequency. Here we report a self-powered intelligent buoy system (SIBS), in which a high-output multilayered TENG is used for water wave energy harvesting. With a power management module, the output voltage can be converted and regulated as a steady DC voltage of 2.5 V for the operations of a mic...
Source: Nano Energy - April 15, 2019 Category: Nanotechnology Source Type: research

Free-standing integrated cathode derived from 3D graphene/carbon nanotube aerogels serving as binder-free sulfur host and interlayer for ultrahigh volumetric-energy-density lithiumsulfur batteries
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Haodong Shi, Xuejun Zhao, Zhong-Shuai Wu, Yanfeng Dong, Pengfei Lu, Jian Chen, Wencai Ren, Hui-Ming Cheng, Xinhe BaoAbstractThe actual applications of lithium sulfur (LiS) batteries are significantly obstructed by limited cyclability and low volumetric-energy-density due to the shuttling effect of polysulfides and low mass density of sulfur cathode. Herein, we report a free-standing, compact, conductive and integrated cathode (G/CNT-S//G/CNT), constructed by compressing graphene/carbon nanotubes (G/CNT) aerogels, simultaneously serving as bi-functionalitie...
Source: Nano Energy - April 13, 2019 Category: Nanotechnology Source Type: research

V2O5 nanopaper as a cathode material with high capacity and long cycle life for rechargeable aqueous zinc-ion battery
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Yankai Li, Zhimei Huang, Pramod K. Kalambate, Yun Zhong, Zhaoming Huang, Meilan Xie, Yue Shen, Yunhui HuangAbstractAqueous batteries are suitable for large scale energy storage due to cost and safety concerns. Among all aqueous batteries, rechargeable aqueous zinc-ion battery is a promising choice because zinc electrode has low equilibrium potential, high exchange current density, and high hydrogen evolution overpotential. However, since zinc ion is a divalent cation, it is difficult to find a cathode material in which zinc ion can reversibly insert and ex...
Source: Nano Energy - April 13, 2019 Category: Nanotechnology Source Type: research

High-conductivity reduced-graphene-oxide/copper aerogel for energy storage
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Jie Zhao, Ruijun Pan, Rui Sun, Chenyu Wen, Shi-Li Zhang, Biao Wu, Leif Nyholm, Zhi-Bin ZhangAbstractThis work reports a room-temperature, solution-phase and one-pot method for macro-assembly of a three-dimensional (3D) reduced-graphene-oxide/copper hybrid hydrogel. The hydrogel is subsequently transformed into a highly conductive aerogel via freeze-drying. The aerogel, featuring reduced graphene oxide (rGO) networks decorated with Cu and CuxO nanoparticles (Cu/CuxO@rGO), exhibits a specific surface area of 48 m2/g and an apparent electrical conductivity ...
Source: Nano Energy - April 13, 2019 Category: Nanotechnology Source Type: research

Ternary polymer solar cells with alloyed donor achieving 14.13% efficiency and 78.4% fill factor
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Qiaoshi An, Jian Wang, Fujun ZhangAbstractThe power conversion efficiency (PCE) reaches to 12.63% or 12.19% for polymer solar cells (PSCs) based on PM6 or J71 as donor and Br-ITIC as acceptor, respectively. A series of ternary PSCs with two donors were fabricated by combining the merits of the two binary PSCs. The PM6 and J71 prefer to form alloyed donor due to the good compatibility, which is beneficial to finely optimize photon harvesting and phase separation of ternary active layers, leading to simultaneous improvement of short-circuit current density (...
Source: Nano Energy - April 13, 2019 Category: Nanotechnology Source Type: research

Highly efficient photocatalytic hydrogen evolution from water-soluble conjugated polyelectrolytes
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Zhicheng Hu, Xi Zhang, Qingwu Yin, Xiaocheng Liu, Xiao-fang Jiang, Zhiming Chen, Xiye Yang, Fei Huang, Yong CaoAbstractOrganic semiconductors for photocatalytic application have received wide attention recently. However, developing organic photocatalysts for highly efficient photocatalytic hydrogen evolution is a great challenge. Herein, we show highly efficient photocatalytic hydrogen evolution from a series of novel conjugated polyelectrolytes (CPEs) by modulating their interaction with co-catalysts. The water-soluble CPEs greatly enhance the photocataly...
Source: Nano Energy - April 13, 2019 Category: Nanotechnology Source Type: research

In-situ thermal annealing Pt/Ti interphase layers for epitaxial growth of improved Li(Ni0.5Mn0.3Co0.2)O2 solid thin-film cathodes
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Cheng-Yu Wu, Qi Bao, Yen Chung Lai, Xin Liu, Yu-Chu Lu, Heng Tao, Jenq-Gong DuhAbstractThin film batteries (TFBs) are receiving increasing interest in the transition stage from current liquid electrochemistry to solid-state future in pursuit of higher energy and power densities. Nevertheless, the fundamental understanding the impacts of the electrode-solid-electrolyte interface engineering and unveiling the correlation between crystallographic texture as well as the electrochemical behavior of electrodes has remained elusive. Herein, the epitaxial growth o...
Source: Nano Energy - April 13, 2019 Category: Nanotechnology Source Type: research

Human-motion interactive energy harvester based on polyaniline functionalized textile fibers following metal/polymer mechano-responsive charge transfer mechanism
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Sumita Goswami, Andreia dos Santos, Suman Nandy, Rui Igreja, Pedro Barquinha, Rodrigo Martins, Elvira FortunatoAbstractOur experimental outturn opens up a new vision by proposing mechano-responsive charge transfer mechanism (MRCTM) to π-conjugated polymers in the field of human-motion interactive energy harvester. Doped polyaniline (d-PANi) has been used to functionalize conducting textile fibers (f-CTFs) and integrated with our proposed design for wearable power plant. Each f-CTF generates current by patting, bending, or even soft touching. Localized f...
Source: Nano Energy - April 13, 2019 Category: Nanotechnology Source Type: research

Solution-processed SnO2 interfacial layer for highly efficient Sb2Se3 thin film solar cells
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Jiahua Tao, Xiaobo Hu, Yixin Guo, Jin Hong, Kanghua Li, Jinchun Jiang, Shaoqiang Chen, Chengbin Jing, Fangyu Yue, Pingxiong Yang, Chuanjun Zhang, Zhuangchun Wu, Jiang Tang, Junhao ChuAbstractAntimony selenide (Sb2Se3) thin film solar cells have gained worldwide intense research owing to their suitable bandgap, high absorption coefficient, benign grain boundaries, earth-abundant element constituents and low fabrication cost. It is extremely important to investigate the interface passivation and minimize the carrier recombination to realize high-efficiency S...
Source: Nano Energy - April 13, 2019 Category: Nanotechnology Source Type: research

Principle of proximity: Plasmonic hot electrons motivate donator-adjacent semiconductor defects with enhanced electrocatalytic hydrogen evolution
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Bang Lin Li, Hao Lin Zou, Jie Kang Tian, Guo Chen, Xiao Hu Wang, Huan Duan, Xiao Lin Li, Yan Shi, Jing Rong Chen, Ling Jie Li, Jing Lei Lei, Hong Qun Luo, Nian Bing LiAbstractDefects in layered semiconductors cause large variation of electric and catalysis properties, and exploiting defect-involved reaction can deeply excavate unearthed characteristics with significant performances. Mo-terminated defects of MoS2 spontaneously guide the oriented growths of ultrasmall Au nanocrystals on specific sites of liquid-exfoliated (LE) nanosheets, which are experimen...
Source: Nano Energy - April 12, 2019 Category: Nanotechnology Source Type: research

High-performance piezoelectric nanogenerator based on microstructured P(VDF-TrFE)/BNNTs composite for energy harvesting and radiation protection in space
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Shibo Ye, Can Cheng, Xiaoming Chen, Xiaoliang Chen, Jinyou Shao, Jie Zhang, Hanwen Hu, Hongmiao Tian, Xiangming Li, Li Ma, Wenbao JiaAbstractStable and durable piezoelectric nanogenerators (PENGs) with good flexibility, high performance and superior radiation resistance under harsh environments are promising for space exploration. Here, a novel PENG based on P(VDF-TrFE)/boron nitride nanotubes (BNNTs) nanocomposite micropillar arrays with enhanced performance and excellent neutron radiation shielding is prepared by a reliable nanoimprint lithography. The P...
Source: Nano Energy - April 12, 2019 Category: Nanotechnology Source Type: research

Ultrasensitivity of self-powered wireless triboelectric vibration sensor for operating in underwater environment based on surface functionalization of rice husks
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Sz-Nian Lai, Chih-Kai Chang, Cheng-Shiun Yang, Chun-Wei Su, Chyi-Ming Leu, Ying-Hao Chu, Pao-Wen Sha, Jyh Ming WuAbstractWe demonstrate the self-powered wireless triboelectric vibration sensor as made from the naturally nanoporous SiO2 particles for allowing the detection of the vibrations and movement in the underwater environment. The nanoporous SiO2 particles are directly converted from the rice husks (referred to as RHSiO2), which exhibit strongly interacting surface hydroxyl groups. Through the enzymatic treatments, the surface potential of the RHSiO2...
Source: Nano Energy - April 12, 2019 Category: Nanotechnology Source Type: research

2D piezotronics in atomically thin zinc oxide sheets: Interfacing gating and channel width gating
This study presents in-depth understandings about the 2D piezotronics in both interfacing gating and channel width gating in piezotronics, which fundamentally paves a way for applying 2D materials with out-of-plane piezoelectricity and semiconducting property in next generation of electromechanical nanodevices.Graphical abstract2D piezotronics in atomically thin ZnO sheets are explored for the first time by using inner crystal out-of-plane piezopotential in 2D materials as ‘gate’ controlling signal to simultaneously modulate the interface barrier and the conductive channel width, and further tune the electronic...
Source: Nano Energy - April 12, 2019 Category: Nanotechnology Source Type: research

Polymer-MXene composite films formed by MXene-facilitated electrochemical polymerization for flexible solid-state microsupercapacitors
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Leiqiang Qin, Quanzheng Tao, Xianjie Liu, Mats Fahlman, Joseph Halim, Per O.Å. Persson, Johanna Rosen, Fengling ZhangAbstractMaterials with tailored properties are crucial for high performance electronics applications. Hybrid materials composed of inorganic and organic components can possess unique merits for broad application by synergy between the advantages the respective material type offers. Here we demonstrate a novel electrochemical polymerization (EP) enabled by a 2D transition metal carbide MXene for obtaining conjugated polymer-MXene compos...
Source: Nano Energy - April 12, 2019 Category: Nanotechnology Source Type: research

High performance piezotronic devices based on non-uniform strain
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Yaming Zhang, Gongwei Hu, Yan Zhang, Lucy Li, Morten Willatzen, Zhong Lin WangAbstractPiezotronic and piezophototronic devices have attracted increasing interests in self-powered sensor, piezotronic logic units and flexible energy-harvesting devices. The carrier transport characteristics can be effectively tuned by the piezoelectric charges induced by an externally applied strain, which has been extensively investigated for a uniform strain case. However, a non-uniform strain can induce a giant piezoelectric field at the interface to significantly enhance ...
Source: Nano Energy - April 10, 2019 Category: Nanotechnology Source Type: research

Waving potential at volt level by a pair of graphene sheets
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Wenwen Fei, Chun Shen, Shiyu Zhang, Hongye Chen, Luxian Li, Wanlin GuoAbstractElectricity generated from liquid flow on graphene has triggered great interests and shown its prospect in harvesting mechanical water energy. However, most attention so far has just been paid to voltage induced in graphene, little is paid for the energy induced by ions movement on liquid side. Here, by employing a pair of graphene sheets, we report the electricity generation in liquid. An open circuit voltage up to 1 V can be obtained as graphene moves across electrolyte solut...
Source: Nano Energy - April 10, 2019 Category: Nanotechnology Source Type: research

Breaking the symmetry: Gradient in NiFe layered double hydroxide nanoarrays for efficient oxygen evolution
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Daojin Zhou, Yin Jia, Xinxuan Duan, Jialun Tang, Jie Xu, Dong Liu, Xuya Xiong, Junming Zhang, Jun Luo, Lirong Zheng, Bin Liu, Yun Kuang, Xiaoming Sun, Xue DuanAbstractBreaking the symmetry in catalysts through interface engineering has emerged as a new dimension in enhancing the catalytic performances, while the long-range asymmetry (i.e. in nanometer scale) in catalysts can hardly be achieved by alloying or doping. Herein, we introduce asymmetrical gradient effect into NiFe layered double hydroxide (NiFe-LDH) at nano scale via a simple nanoarray construct...
Source: Nano Energy - April 10, 2019 Category: Nanotechnology Source Type: research

A laterally designed all-in-one energy device using a thermoelectric generator-coupled micro supercapacitor
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Kyungwhan Yang, Kyoungah Cho, Seunggen Yang, Yoonbeom Park, Sangsig KimAbstractAs an all-in-one energy device, we propose a thermoelectric generator-coupled micro supercapacitor (TEG-MSC) consisting of a planar micro supercapacitor linked directly to the thermoelectric pn modules of p-Ag2Te and n-Ag2Se nanoparticle thin films. In the TEG-MSC, a Seebeck voltage of 82 mV is generated at a temperature difference of 15.8 K and is rapidly charged with an efficiency of 98%. Additionally, the proposed device achieves a discharging and charging ratio of 99%. T...
Source: Nano Energy - April 10, 2019 Category: Nanotechnology Source Type: research

Coupling of spin-orbit interaction with phonon anharmonicity leads to significant impact on thermoelectricity in SnSe
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): TianMin Wu, Xian Chen, Hua Xie, ZheNing Chen, Lu Zhang, ZhiJun Pan, Wei ZhuangAbstractUnderstanding the phonon transport in thermoelectric materials and its coupling with the complex environments is critical for manipulating the lattice thermal conductivity and consequently creating a high heat-to-electricity conversion efficiency. Spin-orbit coupling, an elementary interaction usually neglected when calculating lattice thermal conductivity, is intuitively expected to affect only the harmonic phonon properties in the materials. We herein studied the phonon...
Source: Nano Energy - April 10, 2019 Category: Nanotechnology Source Type: research

The high-speed ultraviolet photodetector of ZnO nanowire Schottky barrier based on the triboelectric-nanogenerator-powered surface-ionic-gate
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Feng Yang, Mingli Zheng, Lei Zhao, Junmeng Guo, Bao Zhang, Guangqin Gu, Gang Cheng, Zuliang DuAbstractNanowires have a high specific surface area and high surface activity, and the surface states are key factors controlling the nanowire Schottky barrier. Therefore, adjusting the surface states is an important strategy for developing high-performance electronic and optoelectronic devices based on nanowire Schottky barriers. Here, a surface-ionic-gate modulation technique was developed to modulate the surface states and Schottky barrier of nanowires, based o...
Source: Nano Energy - April 10, 2019 Category: Nanotechnology Source Type: research

3D mathematical model of contact-separation and single-electrode mode triboelectric nanogenerators
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Jiajia Shao, Morten Willatzen, Yijun Shi, Zhong Lin WangAbstractBased on a set of finite-sized charged planes (FSCP), a simple time-dependent three-dimensional spatial model for the electric potential and electric field in an inhomogeneous medium composed of dielectric materials and metal contacts is proposed and used to assert triboelectric nanogenerator operation. Solving the problem of FSCP makes the three-dimensional spatial model relevant for practical TENG applications and allow for accurate and reliable results. Connecting the metal contacts to an e...
Source: Nano Energy - April 9, 2019 Category: Nanotechnology Source Type: research

Harvesting wind energy: A hybridized design of pinwheel by coupling triboelectrification and electromagnetic induction effects
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Yilin Guo, Yandong Chen, Jinming Ma, Huarui Zhu, Xia Cao, Ning Wang, Zhong Lin WangAbstractWind power is one of the most attractive frontrunners of the technological breakthroughs that might lead to more efficient energy production. However, the implementation of wind energy is seriously delayed due to the lack of technological advancements that can solve the costs and regional deployment issues. Here, a hybridized design of pinwheel with coupled triboelectric nanogenerator (TENG) and electromagnetic generator (EMG) that can harvest wind energy even in a l...
Source: Nano Energy - April 9, 2019 Category: Nanotechnology Source Type: research

Recent advance in new-generation integrated devices for energy harvesting and storage
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Sining Yun, Yongwei Zhang, Qi Xu, Jinmei Liu, Yong QinAbstractEnergy harvesting and storage devices, including lithium-ion batteries (LIBs), supercapacitors (SCs), nanogenerators (NGs), biofuel cells (BFCs), photodetectors (PDs), and solar cells, play a vital role in human daily life due to the possibility of replacing conventional energy from fossil fuels. However, these isolated devices only have limited performance and/or sole applicability, and cannot provide enough energy for application with long-term run and the ever-changing working positions. This...
Source: Nano Energy - April 9, 2019 Category: Nanotechnology Source Type: research

Multi-shell hollow structured Sb2S3 for sodium-ion batteries with enhanced energy density
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Fangxi Xie, Lei Zhang, Qinfen Gu, Dongliang Chao, Mietek Jaroniec, Shi-Zhang QiaoAbstractLow energy density is the key issue that needs to be addressed for sodium ion batteries. Antimony sulfide (Sb2S3) with high theoretical capacity is considered as an ideal anode, but it suffers from poor electrochemical activity and consequently, low energy density. Simple hollow Sb2S3 structures with high electrochemical activity offer high gravimetric energy density, while large internal voids significantly decrease the volumetric energy density. Here, multi-shell Sb2...
Source: Nano Energy - April 9, 2019 Category: Nanotechnology Source Type: research

Tailored nanocomposite energy harvesters with high piezoelectric voltage coefficient through controlled nanowire dispersion
Publication date: June 2019Source: Nano Energy, Volume 60Author(s): Alireza Nafari, Henry A. SodanoAbstractComposites composed of piezoelectric nanomaterials dispersed in a flexible polymer have emerged as promising materials for highly durable and flexible energy harvesters and sensors. Although piezoelectric materials in their bulk form have a high electromechanical coupling coefficient and can efficiently convert mechanical energy to electrical energy, the ceramic form has low fracture toughness and thus they are limited in certain applications due to difficulty in machining and conforming to curved surfaces. Recently, ...
Source: Nano Energy - April 9, 2019 Category: Nanotechnology Source Type: research