电弧法制备石墨烯的孔结构和电化学性能研究

doi:10.3724/SP.J.1077.2010.00725

无机材料学报 ›› 2010, Vol. 25 ›› Issue (7): 725-728.DOI: 10.3724/SP.J.1077.2010.00725

电弧法制备石墨烯的孔结构和电化学性能研究

吕岩¹, 王志永², 张浩^1,3, 房进¹, 曹高萍³, 施祖进², 王碧燕¹

(1. 北京科技大学, 北京 100191; 2. 北京大学化学与分子工程学院, 北京 100871; 3. 防化研究院, 北京 102205)

收稿日期:2009-11-16 修回日期:2009-12-24 出版日期:2010-07-20 网络出版日期:2010-06-10
基金资助:
国家自然科学基金(20633040, 50902149)

Pore Structures and Electrochemical Properties of Graphene Prepared by Arc Discharge Method

LV Yan ¹, WANG Zhi-Yong ², ZHANG Hao ^{1, 3}, FANG Jin ¹, CAO Gao-Ping ³, SHI Zu-Jin ², WANG Bi-Yan¹

(1. University of Science and Technology, Beijing 100191, China; 2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China; 3. Research Institute of Chemical Defense, Beijing 102205, China)

Received:2009-11-16 Revised:2009-12-24 Published:2010-07-20 Online:2010-06-10

摘要/Abstract

摘要：

利用电弧法制备得到石墨烯(graphene)材料, 并对其孔结构和电化学性能进行了研究. 结果表明, 利用电弧法制得的石墨烯具有发达、开放的介孔结构, 比表面积为77.8 m²/g, 中孔率高达74.7%. 作为电化学电容器电极材料, 其在7 mol/L的KOH电解液中比电容为12.9 F/g, 大电流性能优异, 在200 mV/s下的循环伏安曲线仍为矩形, 交流阻抗谱的特征频率高达18.5 Hz, 体现出具有十分优异的倍率性能.

关键词: 石墨烯, 电化学电容器, 孔结构, 比容量, 倍率性能

Abstract:

A graphene material was prepared by arc discharge method, and its pore structures and electrochemical capacitive properties were studied. The graphene presents developed and open mesopore structure, and its specific surface area and mesopore ratio are 77.8 m²/g and 74.7%, respectively. The electrochemical capacitor using graphene as electrode materials, has a capacitance of 12.9 F/g. Its cyclic voltammograms show rectangular shape even under a high scan rate of 200 mV/s, and the specific frequency f0 on the electrochemical impedance spectroscopy is as high as 18.5 Hz, exhibiting excellent rate capability.

Key words: graphene, electrochemical capacitors, pore structure, specific capacitance, rate capability

中图分类号:

O646

吕岩, 王志永, 张浩, 房进, 曹高萍, 施祖进, 王碧燕. 电弧法制备石墨烯的孔结构和电化学性能研究[J]. 无机材料学报, 2010, 25(7): 725-728.

LV Yan, WANG Zhi-Yong, ZHANG Hao, FANG Jin, CAO Gao-Ping, SHI Zu-Jin, WANG Bi-Yan. Pore Structures and Electrochemical Properties of Graphene Prepared by Arc Discharge Method[J]. Journal of Inorganic Materials, 2010, 25(7): 725-728.

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电弧法制备石墨烯的孔结构和电化学性能研究

Pore Structures and Electrochemical Properties of Graphene Prepared by Arc Discharge Method

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