纳米门炭结构及超级电容特性

吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊2): 327-330.

纳米门炭结构及超级电容特性

刘凤丹¹, 薛龙均², 李歆², 尹子振²

天津力神电池股份有限公司, 天津300384

收稿日期:2011-04-14 出版日期:2011-09-30 发布日期:2011-09-30
作者简介:刘凤丹(1984),女,硕士研究生。研究方向:超级电容器和活性炭。E-mail:fdliu@yahoo.cn
基金资助:
超级电容器研发及产业化项目(财建[2010]305号;工信部财[2010]301号);千法级超级电容器的研制与开发项目(09ZCKFGX02400)

Structure and ultracapacitive behavior of nanogate carbons

LIU Feng-dan¹, XUE Long-jun², LI Xin², YIN Zi-zhen²

Tianjin Lishen Battery Joint-Stock Co., Ltd., Tianjin 300384, China

Received:2011-04-14 Online:2011-09-30 Published:2011-09-30

摘要/Abstract

摘要：

以生石油焦为原料,采用KOH活化法制备纳米门炭。采用氮气吸附法、X射线衍射(XRD)和光电子能谱衍射(XPS)对其孔结构、微晶结构和表面性质进行分析,并以其为电极组装超级电容器,测试了电容特性。结果表明:纳米门炭可在3.5V电压下工作,通过首次充电过程中的电化学活化而获得较大的比电容。样品N900比表面积仅为61m²/g,但比电容确高达136.7F/g,能量密度高达58.1Wh/kg。

关键词: 电化学工程, 超级电容器, 纳米门炭, 电化学活化, 能量密度

Abstract:

Nanogate carbons were prepared by KOH activation of raw petroleum coke precursors.The porous structure,crystallite structure,and surface properties were characterized by N2 adsorption-desorption,XRD and XPS respectively.Thecapacitive behavior of the nanogate carbon electrodes showed that nanogate carbons can work under the voltage of 3.5V,and its high capacitance was caused by electrochemical activation in the first charging process.The nanogate carbon sample N900 shows a high capacitance of 136.7F/g with surface area of 61 m²/g,leading to high energy density of 58.1 Wh/kg.

Key words: electrochemical engineering, ultracapacitor, nanogate carbon, electrochemical activation, energy density

中图分类号:

TM53

刘凤丹, 薛龙均, 李歆, 尹子振. 纳米门炭结构及超级电容特性[J]. 吉林大学学报(工学版), 2011, 41(增刊2): 327-330.

LIU Feng-dan, XUE Long-jun, LI Xin, YIN Zi-zhen. Structure and ultracapacitive behavior of nanogate carbons[J]. 吉林大学学报(工学版), 2011, 41(增刊2): 327-330.

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