Preparation of nitrogen doped clews-like carbon materials and their application as the electrode in supercapacitor

In this work, nitrogen doped dews-like carbon materials were successfully fabricated through hydrothermal polymerization method, followed by post treatment that integrated the carbonization, activation and post-nitrogen doping into one process. This preparation method can form particular hierarchical porous structure without using any sacrificial templates. The experimental results show that the nitrogen doped dews-like hierarchical porous carbon materials possess a relatively high specific surface area of 815 m(2)/g with the nitrogen content of 10.58 at%. The electrochemical properties show that the resulting sample delivers 258 Fig at a 0.5 A/g and excellent capacity retention of 79% at 20 A/g. After conducting 10,000 charge-discharge cycles at 10 Ng, the capacitance retention of 98.3% is achieved. These intriguing results demonstrate that the obtained nitrogen doped dews-like carbon materials will be promising electrode materials for supercapacitor and other energy storage devices. (C) 2018 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.