甘蔗渣基纳米孔碳在超级电容器中的应用

doi:10.3724/SP.J.1077.2010.10376

无机材料学报 ›› 2011, Vol. 26 ›› Issue (1): 107-113.DOI: 10.3724/SP.J.1077.2010.10376 CSTR: 32189.14.SP.J.1077.2010.10376

• 研究快报 • 上一篇

甘蔗渣基纳米孔碳在超级电容器中的应用

司维江, 吴小中, 邢伟, 周晋, 禚淑萍

山东理工大学化学工程学院,淄博255049

收稿日期:2010-06-18 修回日期:2010-07-26 出版日期:2011-01-20 网络出版日期:2010-12-23
作者简介:SI Wei-Jiang (1961-), male, associate professor.
基金资助:
Foundationitem: NaturalScience Foundation of Shandong Province (Y2007B29, Y2008F36)

Bagasse-basedNanoporous Carbon for Supercapacitor Application

SI Wei-Jiang, WU Xiao-Zhong, XING Wei, ZHOU Jin, ZHUO Shu-Ping

School of Chemical Engineering, Shandong University ofTechnology, Zibo255049, China

Received:2010-06-18 Revised:2010-07-26 Published:2011-01-20 Online:2010-12-23
Supported by:
Foundationitem: NaturalScience Foundation of Shandong Province (Y2007B29, Y2008F36)

摘要/Abstract

摘要： 以甘蔗渣为原料, 采用微波化学活化法制备了一类纳米孔碳, 并将其用作离子液体超级电容器的电极材料。采用氮气吸附、扫描电子显微镜和透射电子显微镜等手段对制备的纳米孔碳进行系统的结构表征。结果表明, 当氯化锌溶液的浓度从20%增大到60%时, 所制备的纳米孔碳的孔径从2.5nm增加到7.0nm, 这说明纳米孔碳的孔径可以简单地通过控制氯化锌溶液的浓度来调节。通过循环伏安、恒流充放电和电化学阻抗等方法测试纳米孔碳作为离子液体超级电容器电极材料时的电化学性质。研究结果表明, 在离子液体中纳米孔碳的电容性能与其孔径紧密相关, 纳米孔碳的孔尺寸越大, 电容性能越好

关键词: 生物质, 纳米孔碳, 氮气吸附, 超级电容器, 能量密度

Abstract: A kind of nanoporous carbon has been successfully prepared fromsugarcane bagasse through a facile microwave-induced ZnCl₂activation and tested as electrode material in ionic liquid supercapacitor. Theas-prepared nanoporous carbons are systematically characterized by a variety ofmeans such as N₂ adsorption, SEM (scanning electron microscope) andTEM (transmission electron microscope). Characterization results reveal thatthe pore size of nanoporous carbons can be tuned from 2.5 nm to 7 nm by simplyadjusting the concentration of ZnCl₂ solution from 20 wt% to 60 wt%. The nanoporous carbonsare tested as electrode materials in ionic liquid using different electrochemicalmeans such as cyclic voltammetry, constant current charge-discharge andelectrochemical impedance spectroscopy. As evidenced by electrochemicalmeasurements, the capacitive performances of the carbons are closely related totheir pore sizes. It has beendemonstrated that large pore size benefits the good capacitive performance ofnanoporous carbon in ionic liquid electrolyte.

Key words: biomass, nanoporous carbon, N₂ adsorption, supercapacitor, energy density

司维江, 吴小中, 邢伟, 周晋, 禚淑萍. 甘蔗渣基纳米孔碳在超级电容器中的应用[J]. 无机材料学报, 2011, 26(1): 107-113.

SI Wei-Jiang, WU Xiao-Zhong, XING Wei, ZHOU Jin, ZHUO Shu-Ping. Bagasse-basedNanoporous Carbon for Supercapacitor Application[J]. Journal of Inorganic Materials, 2011, 26(1): 107-113.

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甘蔗渣基纳米孔碳在超级电容器中的应用

Bagasse-basedNanoporous Carbon for Supercapacitor Application

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