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). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论