Synergistically reinforced lithium storage performance of in situ chemically grown silicon@silicon oxide core-shell nanowires on three-dimensional conductive graphitic scaffolds

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	Synergistically reinforced lithium storage performance of in situ chemically grown silicon@silicon oxide core-shell nanowires on three-dimensional conductive graphitic scaffolds
	Peng, Chengxin ; Chen, Huixin ; Li, Qiongyu ; Cai, Weiwei ; Yao, Qin ; Wu, Qingsheng ; Yang, Jinhu ; Yang, Yong ; Cai WW(蔡伟伟) ; Yang Y(杨勇)
刊名	http://dx.doi.org/10.1039/c4ta02246g
	2014
关键词	Electrodes Foams Lithium Lithium batteries Lithium compounds Nanowires Scaffolds Secondary batteries Silicon Silicon oxides
英文摘要	The silicon material is the most promising candidate for developing new-generation lithium-ion batteries with high energy and power output. However, there remains a significant challenge due to poor electrical conductivity and pulverization of the silicon based anode during cycles. Aiming to solve these problems, in this work we fabricate a novel 3D composite architecture made of a Si@SiOx core-shell nanowire array grown on a 3D graphitic foam (Si CNW-3D GF) substrate by a well-designed multiple-step approach. The prepared Si CNW-3D GF composite shows the integrated advantages for high-performance lithium ion batteries, including its light weight, open macroporosity, high conductivity, high Si NW loading, excellent flexibility as well as SiO x buffer layers. As a result, the Si CNW-3D GF composite exhibits excellent performance such as high reversible lithium storage capacity (3603 mA h g-1 at a current density of 840 mA g-1), excellent cycling performance (up to 100 cycles) and superior rate capability (2299 mA h g-1 at 4200 mA g-1 and 1206 mA h g-1 at 8400 mA g-1), which is 2 times that of the Si CNW electrode where Si CNWs were grown directly on a stainless steel current collector without the presence of 3D GF. This journal is ? the Partner Organisations 2014.
语种	英语
出版者	Royal Society of Chemistry
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/92283]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Peng, Chengxin,Chen, Huixin,Li, Qiongyu,et al. Synergistically reinforced lithium storage performance of in situ chemically grown silicon@silicon oxide core-shell nanowires on three-dimensional conductive graphitic scaffolds[J]. http://dx.doi.org/10.1039/c4ta02246g,2014.
APA	Peng, Chengxin.,Chen, Huixin.,Li, Qiongyu.,Cai, Weiwei.,Yao, Qin.,...&杨勇.(2014).Synergistically reinforced lithium storage performance of in situ chemically grown silicon@silicon oxide core-shell nanowires on three-dimensional conductive graphitic scaffolds.http://dx.doi.org/10.1039/c4ta02246g.
MLA	Peng, Chengxin,et al."Synergistically reinforced lithium storage performance of in situ chemically grown silicon@silicon oxide core-shell nanowires on three-dimensional conductive graphitic scaffolds".http://dx.doi.org/10.1039/c4ta02246g (2014).