Synthesis of a Novel Mn(II)-porphyrins polycondensation polymer and its application as pseudo-capacitor electrode material
Publication date: Available online 15 September 2019Source: Journal of Organometallic ChemistryAuthor(s): Zhiyu Cheng, Yongfu Qiu, Guiping Tan, Xueyi Chang, Qun Luo, Lifeng CuiAbstractA novel Mn(II)-porphyrins polycondensation polymer (THPP-PA-Mn) was first synthesized via esterification of meso-tetra(p-hydroxyphenyl) porphyrin (THPP) with phthalic anhydride (PA) and then metallizing with manganese acetate. Next, the THPP-PA-Mn was coated on Ni foam and applied as electrode materials for supercapacitors. Cyclic voltammetry measurements showed that THPP-PA-Mn exhibited a good reversible redox property since the Mn(II)-porphyrins moieties in polycondensation polymer have electron conjugated bonds. According to calculating from discharge curve at current density 2.5 A g−1, the specific capacitance of the THPP-PA-Mn was as high as 90.9 F g−1. Through 3000 cyclic voltammetry tests, the capacitance decay of THPP-PA-Mn/Ni was about 13.7%, which indicated that it had a long cycle life. Finally, THPP-PA-Mn could also be used to assemble a simple solid-state supercapacitor with good performance. In a word, THPP-PA-Mn with a good reversible redox property was reported as a promising electrode material for efficient pseudo-capacitors for the first time.
Authors: Hanewinkel R PMID: 31623003 [PubMed - in process]
Zum Kommentar von Prof. Reiner Hanewinkel zum Hot Topic-Thema „Raucherentwöhnung: E-Zigarette besser als klassische Nikotinersatzpräparate?“ Pneumologie 2019; 73: 336 – 337. Pneumologie. 2019 Oct;73(10):622 Authors: Pommer P PMID: 31623002 [PubMed - in process]
Authors: Schulz H, Karrasch S, Bölke G, Cyrys J, Hornberg C, Pickford R, Schneider A, Witt C, Hoffmann B PMID: 31623001 [PubMed - in process]
Leserbrief zu Schulz H, Karrasch S, Bölke G et al. Atmen: Luftschadstoffe und Gesundheit – Teil I. Pneumologie 2019; 73: 288 – 305. Pneumologie. 2019 Oct;73(10):617-619 Authors: Schnitzler A PMID: 31623000 [PubMed - in process]
Authors: Schöll N, Rohde GGU Abstract Pneumonia belongs to the most frequent and most deadly infectious diseases worldwide. It represents an increasing problem for the aging population. The incidence and mortality rises with every decade. The clinical presentation of pneumonia differs between elderly and younger patients. Multiple factors including functional status (self-dependency and immobilization), comorbidities, immunosenescence, nutritional status, swallowing disorders have to be accounted for. Pneumonia in the elderly has to be differentiated from nursing home acquired pneumonia. Diagnosis of pneumonia...
Perikardpunktion – Schritt für Schritt. Pneumologie. 2019 Oct;73(10):597-604 Authors: Ferrari MW PMID: 31622998 [PubMed - in process]
Authors: Raspe M, Rolling T, Leisse C, Fischer J, Lehmann C Abstract Infectious Diseases are a cross-sectional area connected to various medical disciplines and offer interested physicians multiple working opportunities. The spectrum of infectious diseases covers both out- and inpatient care as well as basic, clinical and epidemiological research. The need for infectious diseases specialists is increasing, thus career prospects are promising. Working conditions in infectious diseases are comparatively family-friendly. With this article we intend to arouse interest for working in the fascinating fields of infectious...
Authors: Bahmer T, Wälscher J, Fisser C, Kreuter M, Karg O, Böing S, Koczulla R, Raspe M PMID: 31622996 [PubMed - in process]
Lungengesundheit: Beruf als großer Risikofaktor? Pneumologie. 2019 Sep;73(9):e2 Authors: Simon A PMID: 31622984 [PubMed - in process]
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