Influence of Gold Nanoparticles Anchored to Carbon Nanotubes on Formation and Decomposition of Li2O2 in Nonaqueous Li-O-2 Batteries

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	Influence of Gold Nanoparticles Anchored to Carbon Nanotubes on Formation and Decomposition of Li2O2 in Nonaqueous Li-O-2 Batteries
	Fan, WG ; Guo, XX ; Xiao, DD ; Gu, L
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2014
卷号	118 期号:14 页码:7344
ISSN号	1932-7447
通讯作者	Guo, XX (reprint author), Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China.
中文摘要	Gold nanoparticles (AuNPs) anchored to vertically aligned carbon nanotubes (VACNTs) act as additional nucleation sites for the Li2O2 growth, leading to the decreased size while increased density of Li2O2 particles in process of discharge. Correspondingly, at the deep discharge to 2.0 V the batteries show increased specific capacity. Upon charge, the AuNPs exhibit promotion effect on the Li2O2 decomposition by improving the conduction property of the discharge-formed particles, rather than by imposing the conventional electrocatalytic effect on the oxygen evolution reaction. Moreover, the AuNPs show promotion effect on decomposition of carbonate species arising from the side reactions. These effects consequently lead to the reduced charge overpotentials and extended cycle operation of the batteries. The results here provide a new as well as clear picture on the role of incorporated AuNPs in the Li2O2 formation and decomposition, which would be helpful for better understanding and constructing of high-performance air cathodes.
资助信息	Key Project of the Chinese Academy of Sciences [KGZD-EW-202-2]; Sony Corporation; Science Foundation for Young Researchers of State Key Laboratory of High Performance Ceramics and Superfine Microstructures [SKL201104]; National Natural Science Foundation of China [11174334]
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/311004/59247]
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	Fan, WG,Guo, XX,Xiao, DD,et al. Influence of Gold Nanoparticles Anchored to Carbon Nanotubes on Formation and Decomposition of Li2O2 in Nonaqueous Li-O-2 Batteries[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(14):7344.
APA	Fan, WG,Guo, XX,Xiao, DD,&Gu, L.(2014).Influence of Gold Nanoparticles Anchored to Carbon Nanotubes on Formation and Decomposition of Li2O2 in Nonaqueous Li-O-2 Batteries.JOURNAL OF PHYSICAL CHEMISTRY C,118(14),7344.
MLA	Fan, WG,et al."Influence of Gold Nanoparticles Anchored to Carbon Nanotubes on Formation and Decomposition of Li2O2 in Nonaqueous Li-O-2 Batteries".JOURNAL OF PHYSICAL CHEMISTRY C 118.14(2014):7344.