Oxygen-rich and hierarchical porous carbons prepared from coal based humic acid for supercapacitor electrodes

被引：58

作者：

Huang, Guangxu ^{[1
]}

Kang, Weiwei ^{[1
]}

Xing, Baolin ^{[1
]}

Chen, Lunjian ^{[1
]}

Zhang, Chuanxiang ^{[1
]}

机构：

[1] Henan Polytech Univ, Jiaozuo 454000, Henan, Peoples R China

来源：

FUEL PROCESSING TECHNOLOGY | 2016年 / 142卷

基金：

中国国家自然科学基金;

关键词：

Humic acid; KOH activation; Hierarchical porous carbons; Oxygen content; Volumetric capacitance; ELECTROCHEMICAL PERFORMANCE; VOLUMETRIC CAPACITANCE; TEMPLATE; SPHERES;

D O I：

10.1016/j.fuproc.2015.09.025

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Hierarchical porous carbons (HPCs) were prepared from coal-derived humic acid (HA) through a facile KOH activation method and used as electrode materials for supercapacitors. The obtained HPCs possess hierarchical porous structure consisting of micropores less than 1.8 nm, mesopores mainly falling in the narrow range of 3.5-4.5 nm and macropores, together with high oxygen content (>24.0 wt.%). And the HPC based electrodes deliver high volumetric capacitances with a maximum value of 201 F cm(-3) at a current density of 5 A g(-1), as well as high rate capabilities and excellent cycling stabilities. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1 / 5

页数：5

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