Ultra-high rate capability of nanoporous carbon network@V2O5sub-micron brick composite as a novel cathode material for asymmetric supercapacitors

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成果类型：

期刊论文

作者：

Jiao, Yue*;Wan, Caichao*;Wu, Yiqiang;Han, Jingquan;Bao, Wenhui;...

通讯作者：

Jiao, Yue;Wan, Caichao;Li, Jian

作者机构：

[Han, Jingquan; Jiao, Yue] Nanjing Forestry Univ, Coll Mat Sci & Engn, Nanjing 210037, Peoples R China.

[Wu, Yiqiang; Wan, Caichao] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.

[Wang, Chengyu; Gao, He; Bao, Wenhui; Li, Jian; Wang, Yaoxing] Northeast Forestry Univ, Mat Sci & Engn Coll, Harbin 150040, Peoples R China.

[Han, Jingquan; Jiao, Yue] Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China.

通讯机构：

[Jiao, Yue; Li, Jian] N

[Wan, Caichao] C

Nanjing Forestry Univ, Coll Mat Sci & Engn, Nanjing 210037, Peoples R China.

Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.

Northeast Forestry Univ, Mat Sci & Engn Coll, Harbin 150040, Peoples R China.

语种：

英文

关键词：

Brick;Carbon;Cathode materials;Cathodes;Current density;Supercapacitor;Vanadium pentoxide;Asymmetric supercapacitor;Capacitance retention;Diffusion-controlled process;Electrochemical features;Electrochemical reactions;External surfaces;Large surface area;Nanoporous carbons;Capacitance

期刊：

Nanoscale

ISSN：

2040-3364

年：

2020

卷：

期：

页码：

23213-23224

DOI：

10.1039/d0nr04000b

基金类别：

This study was supported by the National Natural Science Foundation of China (grant no. 31901249), the Young Elite Scientists Sponsorship Program by CAST (grant no. 2019QNRC001) and the Scientific Research Foundation of Hunan Provincial Education Department (grant no. 18B180).

机构署名：

本校为通讯机构

院系归属：

材料科学与工程学院

摘要：

A green biomass-derived nanoporous carbon network (NCN) has been prepared and integrated with V2O5 sub-micron bricks (SMBs). The large surface area and high pore volume of the NCN can not only provide abundant sites for electrochemical reactions but also stabilize the structure of the V2O5 SMBs. The NCN@V2O5 SMB composite, acting as a novel cathode material, delivers a high areal capacitance of 786 mF cm-2 at 0.2 mA cm-2 and superior cycling stability with 89.5% capacitance retention after 5000 cycles. Besides, the electrode achieves an ultra-h...

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Ultra-high rate capability of nanoporous carbon network@V2O5sub-micron brick composite as a novel cathode material for asymmetric supercapacitors

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