飞灰基活性炭电极材料的制备及其电化学性能

doi:10.3969/j.issn.2095-4239.2014.04.009

储能科学与技术 ›› 2014, Vol. 3 ›› Issue (4): 353-359.doi: 10.3969/j.issn.2095-4239.2014.04.009

飞灰基活性炭电极材料的制备及其电化学性能

张亚飞¹, 张传祥¹, 王力¹, 邢宝林¹, 黄光许¹, 段玉玲²

1河南理工大学材料科学与工程学院,河南焦作 454003;
2河南理工大学能源科学与工程学院,河南焦作 454003

收稿日期:2013-02-15 出版日期:2014-07-01 发布日期:2014-07-01
通讯作者: 张传祥,教授,研究方向为矿物加工,洁净煤技术,煤基炭材料及其电化学应用等,E-mail:zcx223@hhu.edu.cn.
作者简介:张亚飞(1989--),男,硕士研究生,研究方向为活性炭电极材料,E-mail:zhangyafei0812@163.com;
基金资助:
国家自然科学基金项目(U1361119),河南省教育厅自然科学研究计划项目(2011B440006)及河南理工大学博士基金项目(B2010-82)

Activated carbons derived from fly ash and their electorchemical performances in supercapacitors

ZHANG Yafei¹, ZHANG Chuanxiang¹, WANG Li¹, XING Baolin¹, HUANG Guangxu¹, DUAN Yuling²

1School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,Henan,China;
2School of Energy Science and Engineering,Hennan Polytechnic,Jiaozuo 454003,Henan,China

Received:2013-02-15 Online:2014-07-01 Published:2014-07-01

摘要/Abstract

摘要： 煤炭气化过程中产生大量飞灰,其中仍然含有未被利用的炭.以飞灰为前驱体,经浮选脱灰,化学活化制备活性炭.考察了制备条件对活性炭性能的影响.结果表明:①碱炭比升高,总孔容和微孔容积增加,中孔含量降低;②碱炭比越高,比电容越大,但大于2∶1后,比电容没有显著提高;③浮选脱灰的电化学性能得到提高;④在大电流密度下充放电仍然保持较高的比电容并且具有优异的循环使用性能.

关键词: 飞灰, 碱炭比, 活性炭, 电化学性能

Abstract: The gasification of coal can produce large amounts of fly ash, which still contains untapped charcoal. Fly ash was demineralized by flotation and activated carbons (ACs) were prepared by activation using KOH. The effect of preparation conditions on the performance of ACs was analyzed. The results show that: ① Total pore volume and micropore volume increased with the alkali-carbon ratio, while the content of mesopores decreased; ②The capacitance increased with the alkali-carbon ratio, but become stable after 2∶1; ③The electrochemical performance was improved by demineralizion; ④Activated carbon electrode shows a high capacitance at high current density and excellent cycling performance.

Key words: fly ash, alkali-carbon ratio, activated carbon, electrochemical performance

中图分类号:

TQ424.1

张亚飞, 张传祥, 王力, 邢宝林, 黄光许, 段玉玲. 飞灰基活性炭电极材料的制备及其电化学性能[J]. 储能科学与技术, 2014, 3(4): 353-359.

ZHANG Yafei, ZHANG Chuanxiang, WANG Li, XING Baolin, HUANG Guangxu, DUAN Yuling. Activated carbons derived from fly ash and their electorchemical performances in supercapacitors[J]. Energy Storage Science and Technology, 2014, 3(4): 353-359.

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飞灰基活性炭电极材料的制备及其电化学性能

Activated carbons derived from fly ash and their electorchemical performances in supercapacitors

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