Structure-preserved 3D porous silicon/reduced graphene oxide materials as anodes for Li-ion batteries

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	Structure-preserved 3D porous silicon/reduced graphene oxide materials as anodes for Li-ion batteries
	Zhang, Keli; Xia, Yonggao; Yang, Zhengdong; Fu, Rusheng; Shen, Chengxu; Liu, Zhaoping
刊名	RSC ADVANCES
	2017
卷号	7 期号:39 页码:24305-24311
ISSN号	2046-2069
英文摘要	Three dimensional (3D) porous silicon/reduced graphene oxide (Si/rGO) composites with typical networks have suffered damage during electrode preparation, which evidently affects the cycle and rate capabilities of Si/rGO anodes. Here, a controllable evaporation dry method is proposed to fabricate structure-preserved 3D porous Si/rGO anode materials by tuning the pore size distribution of the networks. As a result, after evaporation drying for 3.5 h, the optimal sample of 3D porous Si/rGO anode (denoted as Si-G-3.5) with a pore size of similar to 500 nm could preserve its 3D network during the electrode preparation process. While the structures of Si/rGO composites with different drying times (denoted as Si-G-0, Si-G-2.5 and Si-G-4) failed to be preserved. Consequently, The Si-G-3.5 anode exhibits a high reversible specific capacity of 1563 mA h g(-1) at 50 mA g(-1), 90% capacity retention after 100 cycles and superior rate capability (955 mA h g(-1) at 2 A g(-1)).
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/14090]
专题	2017专题
推荐引用方式 GB/T 7714	Zhang, Keli,Xia, Yonggao,Yang, Zhengdong,et al. Structure-preserved 3D porous silicon/reduced graphene oxide materials as anodes for Li-ion batteries[J]. RSC ADVANCES,2017,7(39):24305-24311.
APA	Zhang, Keli,Xia, Yonggao,Yang, Zhengdong,Fu, Rusheng,Shen, Chengxu,&Liu, Zhaoping.(2017).Structure-preserved 3D porous silicon/reduced graphene oxide materials as anodes for Li-ion batteries.RSC ADVANCES,7(39),24305-24311.
MLA	Zhang, Keli,et al."Structure-preserved 3D porous silicon/reduced graphene oxide materials as anodes for Li-ion batteries".RSC ADVANCES 7.39(2017):24305-24311.