Green Synthesis of Hierarchically Porous Carbon Nanotubes as Advanced Materials for High ‐Efficient Energy Storage

Abstract
Hierarchically porous carbon nanomaterials with well‐defined architecture can afford a promising platform for effectively addressing energy and environmental concerns. Herein, a totally green and straightforward synthesis strategy for the fabrication of hierarchically porous carbon nanotubes (HPCNTs) by a simple carbonization treatment without any assistance of soft/hard templates and activation procedures is demonstrated. A high specific surface area of 1419 m2 g−1 and hierarchical micro‐/meso‐/macroporosity can be achieved for the HPCNTs. The unique porous architecture enables the HPCNTs serving as excellent electrode/host materials for high‐performance supercapacitors and Li–sulfur batteries. The design strategy may pave a new avenue for the rational synthesis of hierarchically porous carbon nanostructures for high‐efficient energy storage applications.

A green synthesis strategy is demonstrated herein for the preparation of high‐surface‐area and nitrogen‐enriched hierarchically porous carbon nanotubes without hard/soft templating assistance and activation procedures. The carbon nanostructures provide excellent energy storage platform for high‐performance supercapacitors and Li–S batteries.

Source: Small - February 5, 2018 Category: Nanotechnology Authors: Jian ‐Gan Wang, Hongzhen Liu, Xingyuan Zhang, Xu Li, Xingrui Liu, Feiyu Kang Tags: Full Paper Source Type: research