Influence of Electrolyte Concentration and Temperature on the Capacitance of Activated Carbon

	Influence of Electrolyte Concentration and Temperature on the Capacitance of Activated Carbon
	Tian Ying 1,2; Yan Jing-Wang 1; Xue Rong 1; Yi Bao-Lian 1
刊名	acta physico-chimica sinica
	2011-02-01
卷号	27 期号:2 页码:479-485
关键词	Supercapacitor Activated carbon Electrolyte concentration Temperature
ISSN号	待补充
通讯作者	阎景旺
产权排序	1,1
中文摘要	influence of electrolyte concentration and temperature on the capacitance of activated carbon
英文摘要	the influences of electrolyte concentration and temperature on the capacitive behavior of activated carbon (ac) were investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge measurements. the performance of a symmetric capacitor was characterized in 0.1, 0.5, 1.0, and 6.0 mol . l-1 koh solution. we found that the high electrolyte concentration led to high capacitance, low internal resistance, and a narrow voltage window. the capacitance and internal resistance were found to be linearly dependent on the logarithm of koh concentration. ac supercapacitor performance was investigated at 20, 40 and 80 degrees c, respectively. we found that elevated temperatures are favorable for an increase in capacitance and for a decrease in internal resistance. however, elevated temperatures increase the capacitance fading rate during long charge/discharge cycling tests.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
关键词[WOS]	templated mesoporous carbons ; supercapacitors ; performance ; behavior
收录类别	SCI
语种	英语
WOS记录号	WOS:000286597200033
公开日期	2012-07-09
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/115421]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning Prov, Peoples R China 2.Dalian Jiaotong Univ, Coll Environm & Chem Engn, Dalian 116028, Liaoning Prov, Peoples R China
推荐引用方式 GB/T 7714	Tian Ying,Yan Jing-Wang,Xue Rong,et al. Influence of Electrolyte Concentration and Temperature on the Capacitance of Activated Carbon[J]. acta physico-chimica sinica,2011,27(2):479-485.
APA	Tian Ying,Yan Jing-Wang,Xue Rong,&Yi Bao-Lian.(2011).Influence of Electrolyte Concentration and Temperature on the Capacitance of Activated Carbon.acta physico-chimica sinica,27(2),479-485.
MLA	Tian Ying,et al."Influence of Electrolyte Concentration and Temperature on the Capacitance of Activated Carbon".acta physico-chimica sinica 27.2(2011):479-485.