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	XPS, time-of-flight-SIMS and polarization modulation IRRAS study of Cr2O3 thin film materials as anode for lithium ion battery
	Li, Jun-Tao ; Maurice, Vincent（Univ Paris 06, Ecole Natl Super Chim Paris） ; Swiatowska-Mrowiecka, Jolanta（Univ Paris 06, Ecole Natl Super Chim Paris） ; Seyeux, Antoine（Univ Paris 06, Ecole Natl Super Chim Paris） ; Zanna, Sandrine（Univ Paris 06, Ecole Natl Super Chim Paris） ; Klein, Lorena（Univ Paris 06, Ecole Natl Super Chim Paris） ; Sun, Shi-Gang ; Sun SG(孙世刚) ; Marcus, Philippe（Univ Paris 06, Ecole Natl Super Chim Paris）
	2009-01
关键词	XPS ToF-SIMS PM-IRRAS Cr2O3 thin film Anode material Lithium ion battery SEI
英文摘要	Ultra-thin Cr2O3 films (12.0, 17.3 and 29.6nm thick) were produced on Cr metal by thermal oxidation, and their electrochemical properties in 1 M LiClO4 in propylene carbonate (PC) were investigated by cyclic voltammetry and chronopotentiometry. The reductive electrolyte decomposition and the conversion/deconversion process were observed and analyzed by X-ray photoelectron spectroscopy (XPS). polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The initial irreversible capacity due to the reduction of electrolyte and the incomplete deconversion process during the first cycle is 70% of the first discharge capacity. A stable charge/discharge capacity of 460mAhg(-1) was obtained in the 3rd to 10th cycles. XPS and PM-IRRAS evidenced the growth of a solid electrolyte interphase (SEI) layer that is constituted of Li2CO3 formed by reductive decomposition of the electrolyte. The SEI layer thickness and/or density is modified by the conversion/deconversion reaction. ToF-SIMS evidenced the volume expansion/shrink resulting from the conversion/deconversion reaction. ToF-SIMS also revealed an incomplete conversion process limited by mass transport, which partitions the oxide into a converted outer part assigned to Li2O containing Cr traces and an unconverted inner part ascribed to Cr2O3 or lower Cr oxide containing Li. It was found that the deconversion re-homogenizes the oxide film in a single layer but with lithium trapped in it. The present study provides a detailed understanding of the interfacial reaction on the oxide anode undergoing a conversion/deconversion reaction. (C) 2009 Elsevier Ltd. All rights reserved.; Special Funds for Major State Basic Research Project of China [2009CB220102]; China Scholarship Council ; Universite Pierre et Marie Curie, Universite Denis Diderot [CNRS UMR 7588]
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.electacta.2009.01.052]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Li, Jun-Tao,Maurice, Vincent,Swiatowska-Mrowiecka, Jolanta,et al. XPS, time-of-flight-SIMS and polarization modulation IRRAS study of Cr2O3 thin film materials as anode for lithium ion battery[J],2009.
APA	Li, Jun-Tao.,Maurice, Vincent.,Swiatowska-Mrowiecka, Jolanta.,Seyeux, Antoine.,Zanna, Sandrine.,...&Marcus, Philippe.(2009).XPS, time-of-flight-SIMS and polarization modulation IRRAS study of Cr2O3 thin film materials as anode for lithium ion battery..
MLA	Li, Jun-Tao,et al."XPS, time-of-flight-SIMS and polarization modulation IRRAS study of Cr2O3 thin film materials as anode for lithium ion battery".(2009).

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