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

• Published in: Chinese chemical letters 2019-03, Vol.30 (3), p.787-791
• Main Authors: Chen, Shengrui, Liang, Jiyuan, Zhao, Jinxing, Li, Haifeng, Liu, Yan, Deng, Heming, Liu, Chang, Tang, Shun, Cao, Yuan-Cheng
• Format: Article
• Language: English
• Subjects: Clews-like; Electrode; Hierarchical; Nitrogen doped; Porous carbon material
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2018.11.003

Nitrogen doped clews-like hierarchical porous carbon materials, fabricated by means of a one-pot hydrothermal reaction and post treatment, exhibit superior supercapacitive performances. [Display omitted] In this work, nitrogen doped clews-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 clews-like hierarchical porous carbon materials possess a relatively high specific surface area of 815 m2/g with the nitrogen content of 10.58 at%. The electrochemical properties show that the resulting sample delivers 258 F/g 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 A/g, the capacitance retention of 98.3% is achieved. These intriguing results demonstrate that the obtained nitrogen doped clews-like carbon materials will be promising electrode materials for supercapacitor and other energy storage devices.