Tunnel-dependent supercapacitance of MnO2: effects of crystal structure

	Tunnel-dependent supercapacitance of MnO2: effects of crystal structure
	Sun CT ; Zhang YJ ; Song SY ; Xue DF
刊名	journal of applied crystallography
	2013
卷号	46 页码:1128-1135
关键词	RECHARGEABLE LITHIUM BATTERIES CHARGE STORAGE MECHANISM HIGH-PERFORMANCE ELECTROCHEMICAL SUPERCAPACITORS ELECTRODE CAPACITORS CATHODE GROWTH
ISSN号	0021-8898
通讯作者	xue df
中文摘要	a proportional relationship between the specific capacitance of mno2 and the percentage of effective mn centers that act as active sites in the faradaic charge storage has been established on the basis of a tunnel structure-crystallization behavior correlation. a quantitative relationship between the effective mn centers at the surfaces and in the tunnels can distinguish the specific capacitance values that arise from the adsorption/desorption and insertion/extraction processes, respectively, of different mno2 crystallographic forms in the faradaic charge storage. the different specific capacitance values between the mno2 crystallographic forms are mainly attributed to the different effective utilizations of mn centers in the size-limited tunnels. the present model demonstrates that increasing the percentage of effective mn centers via decreasing the crystal size can facilitate obtaining mno2-based electrode materials with higher specific capacitance values.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000322032300040
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49700]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Sun CT,Zhang YJ,Song SY,et al. Tunnel-dependent supercapacitance of MnO2: effects of crystal structure[J]. journal of applied crystallography,2013,46:1128-1135.
APA	Sun CT,Zhang YJ,Song SY,&Xue DF.(2013).Tunnel-dependent supercapacitance of MnO2: effects of crystal structure.journal of applied crystallography,46,1128-1135.
MLA	Sun CT,et al."Tunnel-dependent supercapacitance of MnO2: effects of crystal structure".journal of applied crystallography 46(2013):1128-1135.