Morphology and modulus evolution of graphite anode in lithium ion battery: An in situ AFM investigation

doi:10.1007/s11426-013-4988-4

CORC > 化学研究所 > 中国科学院化学研究所

	Morphology and modulus evolution of graphite anode in lithium ion battery: An in situ AFM investigation
	Deng Xin 1,2; Liu XingRui 1,2; Yan HuiJuan 1; Wang Dong 1; Wan LiJun 1
刊名	SCIENCE CHINA-CHEMISTRY
	2014
卷号	57 期号:1 页码:178-183
关键词	Lithium Ion Battery In Situ Electrochemical Afm Sei Modulus
ISSN号	1674-7291
DOI	10.1007/s11426-013-4988-4
英文摘要	We investigated the interfacial electrochemical processes on graphite anode of lithium ion battery by using highly oriented pyrolytic graphite (HOPG) as a model system. In situ electrochemical atomic force microscopy experiments were performed in 1 M lithium bis(trifluoromethanesulfonyl)imide/ethylene carbonate/diethyl carbonate to reveal the formation process of solid electrolyte interphase (SEI) on HOPG basal plane during potential variation. At 1.45 V, the initial deposition of SEI began at the defects of HOPG surface. After that, direct solvent decomposition took place at about 1.3 V, and the whole surface was covered with SEI. The thickness of SEI was 10.4 +/- 0.2 nm after one cycle, and increased to 13.8 +/- 0.2 nm in the second cycle, which is due to the insufficient electron blocking ability of the surface film. The Young's modulus of SEI was measured by a peak force quantitative nanomechanical mapping (QNM). The Young's modulus of SEI is inhomogeneous. The statistic value is 45 +/- 22 MPa, which is in agreement with the organic property of SEI on basal plane of HOPG.
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000329110100022
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52801]
专题	中国科学院化学研究所
通讯作者	Wang Dong
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Deng Xin,Liu XingRui,Yan HuiJuan,et al. Morphology and modulus evolution of graphite anode in lithium ion battery: An in situ AFM investigation[J]. SCIENCE CHINA-CHEMISTRY,2014,57(1):178-183.
APA	Deng Xin,Liu XingRui,Yan HuiJuan,Wang Dong,&Wan LiJun.(2014).Morphology and modulus evolution of graphite anode in lithium ion battery: An in situ AFM investigation.SCIENCE CHINA-CHEMISTRY,57(1),178-183.
MLA	Deng Xin,et al."Morphology and modulus evolution of graphite anode in lithium ion battery: An in situ AFM investigation".SCIENCE CHINA-CHEMISTRY 57.1(2014):178-183.