The Effects of Different Core-Shell Structures on the Electrochemical Performances of Si-Ge Nanorod Arrays as Anodes for Micro-Lithium Ion Batteries

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	The Effects of Different Core-Shell Structures on the Electrochemical Performances of Si-Ge Nanorod Arrays as Anodes for Micro-Lithium Ion Batteries
	Yu, Yingjian ; Yue, Chuang ; Sun, Shibo ; Lin, Wei ; Su, Hang ; Xu, Binbin ; Li, Juntao ; Wu, Suntao ; Li, Jing ; Kang, Junyong ; Kang JY(康俊勇) ; Li J(李静)
刊名	http://dx.doi.org/10.1021/am500782b
	2014-04-23
关键词	SILICON GERMANIUM CAPACITY ELECTRODES NANOWIRES INSERTION STORAGE CELLS
英文摘要	MOST of China [2009CB930704]; National Natural Science Foundation of China [61106118]; Science and Technology Project of Fujian Province of China [2013H0046]; Natural Science Foundation of Fujian Province of China [2011J01362]; Fundamental Research Funds for the Central Universities [2011121026]; Connected and airbag isolated Si-Ge nanorod (NR) arrays in different configurations have been fabricated on wafer scale Si substrates as anodes in micro-lithium ion batteries (LIBs), and the impacts of configurations on electrochemical properties of the electrodes were investigated experimentally and theoretically. It is demonstrated that the Si inner cores can be effectively protected by the connected Ge shells and contribute to the enhanced capacity by similar to 68%, derived from an activation process along with the amorphization of the crystalline lattice. The first-principles calculations further verify the smaller forces on the Si layers at the atomic level during the restricted volume expansion with the covering of Ge layers. This work provides general guidelines for designing other composites and core-shell configurations in electrodes of micro-LIBs to accomplish higher capacities and longer cycle lives.
语种	英语
出版者	AMER CHEMICAL SOC
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/92029]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Yu, Yingjian,Yue, Chuang,Sun, Shibo,et al. The Effects of Different Core-Shell Structures on the Electrochemical Performances of Si-Ge Nanorod Arrays as Anodes for Micro-Lithium Ion Batteries[J]. http://dx.doi.org/10.1021/am500782b,2014.
APA	Yu, Yingjian.,Yue, Chuang.,Sun, Shibo.,Lin, Wei.,Su, Hang.,...&李静.(2014).The Effects of Different Core-Shell Structures on the Electrochemical Performances of Si-Ge Nanorod Arrays as Anodes for Micro-Lithium Ion Batteries.http://dx.doi.org/10.1021/am500782b.
MLA	Yu, Yingjian,et al."The Effects of Different Core-Shell Structures on the Electrochemical Performances of Si-Ge Nanorod Arrays as Anodes for Micro-Lithium Ion Batteries".http://dx.doi.org/10.1021/am500782b (2014).