Insight into Enhanced Cycling Performance of Li-O-2 Batteries Based on Binary CoSe2/CoO Nanocomposite Electrodes

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	Insight into Enhanced Cycling Performance of Li-O-2 Batteries Based on Binary CoSe2/CoO Nanocomposite Electrodes
	Dong, SM ; Wang, S ; Guan, J ; Li, SM ; Lan, ZG ; Chen, C ; Shang, CQ ; Zhang, LX ; Wang, XG ; Gu, L ; Cui, GL ; Chen, LQ
刊名	JOURNAL OF PHYSICAL CHEMISTRY LETTERS
	2014
卷号	5 期号:3 页码:615
ISSN号	1948-7185
通讯作者	Gu, L (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100090, Peoples R China.
中文摘要	In this study, binary core-shell CoSe2/CoO nanocomposites are synthesized as cathodic electrodes for the Li-O-2 cell, which exhibits enhanced cycle performance. From theoretical calculations, aberration-corrected scanning transmission electron microscopy observation, and gas chromatography mass spectrum verification, we propose that an enhanced cycle performance can be attributed to the improvement of the compatibility of the cathode/Li2O2 interface, which results from preferable interaction between Li2O2 intermediates and the CoO "shell" and then reduction of interfacial Li2CO3 formation on the carbon surface. Furthermore, our findings demonstrate that the CoSe2 "core" may impact the electronic structure of surface metal ions, generating a superior cycling performance than that of pristine CoO materials. These results will offer some critical insights into the mechanistic process of Li-O-2 batteries.
资助信息	Key Research Program of the Chinese Academy of Sciences [KGZD-EW-202-2]; National Natural Science Foundation of China [21275151, 21271180, 21301185]; National High Technology Research and Development Program of China.(863 Program) [2013AA050905]; National Program on Key Basic Research Project of China [MOST2011CB935700]; State Key Laboratory of Electroanalytical Chemistry [SKLEAC201302]; Key Technology Research Projects of Qingdao [12-4-1-24-gx]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59255]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Dong, SM,Wang, S,Guan, J,et al. Insight into Enhanced Cycling Performance of Li-O-2 Batteries Based on Binary CoSe2/CoO Nanocomposite Electrodes[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2014,5(3):615.
APA	Dong, SM.,Wang, S.,Guan, J.,Li, SM.,Lan, ZG.,...&Chen, LQ.(2014).Insight into Enhanced Cycling Performance of Li-O-2 Batteries Based on Binary CoSe2/CoO Nanocomposite Electrodes.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,5(3),615.
MLA	Dong, SM,et al."Insight into Enhanced Cycling Performance of Li-O-2 Batteries Based on Binary CoSe2/CoO Nanocomposite Electrodes".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 5.3(2014):615.