High-capacity porous carbons prepared by KOH activation of activated carbon for supercapacitors

被引：58

作者：

Xiao, Yong ^{[1
]}

Long, Chao ^{[1
]}

Zheng, Ming-Tao ^{[1
]}

Dong, Han-Wu ^{[1
]}

Lei, Bing-Fu ^{[1
]}

Zhang, Hao-Ran ^{[1
]}

Liu, Ying-Liang ^{[1
]}

机构：

[1] South China Agr Univ, Dept Appl Chem, Guangzhou 510642, Guangdong, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2014年 / 25卷 / 06期

基金：

美国国家科学基金会;

关键词：

Carbon materials; Amorphous materials; Electrical properties; FUNCTIONALIZED GRAPHENE; ENERGY-STORAGE; PERFORMANCE;

D O I：

10.1016/j.cclet.2014.05.004

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High-performance supercapacitor electrode materials are prepared from the commercially available activated carbon (AC) through a facile and low-cost chemical activation method. The obtained results show that AC activated by KOH with an alkali/carbon ratio of 6/1 (ACK6) possesses a specific surface area of 3405 m(2)/g, a large pore volume of 2.01 cm(3)/g, and exhibits the highest initial specific capacitance of 335 F/g at the current density of 0.5 A/g in 6 mol/L KOH, and 85% coloumbic efficiency for 5000 cycles at 20 mV/s. (C) 2014 Ying-Liang Liu. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

引用

页码：865 / 868

页数：4

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