In situ grown graphene-encapsulated germanium nanowires for superior lithium-ion storage properties | |
Wang, Chao ; Ju, Jing ; Yang, Yanquan ; Tang, Yufeng ; Lin, Jianhua ; Shi, Zujin ; Han, Ray P. S. ; Huang, Fuqiang | |
刊名 | journal of materials chemistry a |
2013 | |
关键词 | PERFORMANCE ANODE MATERIALS ARC-DISCHARGE METHOD HIGH-CAPACITY GE NANOWIRES BATTERY ANODES CARBON NANOTUBES ELECTRODES NANOPARTICLES NANOSTRUCTURES NETWORKS |
DOI | 10.1039/c3ta11313b |
英文摘要 | Alloying anode materials (Si, Ge, Sn etc.) in lithium-ion batteries usually suffer from a remarkable loss of capacity during the charge-discharge cycling. Herein, homogeneous in situ-grown graphene-encapsulated Ge nanowires are successfully achieved by a simple, completely catalyst-free route via arc-discharge. The Ge@G composite is composed of a graphene sheath and a metallic Ge nanowire core. This unique composite of graphene-encapsulated Ge nanowires is an ideal anode material for lithium ion storage. It can exhibit excellent electrochemical performance with a reversible specific capacity of 1400 mA h g(-1) after 50 cycles at a current density of 1600 mA g(-1) (the theoretical specific capacity of Ge is 1624 mA h g(-1)). These encouraging results demonstrate that arc-discharge synthesis provides efficient graphene encapsulation of Ge nanowires, and graphene encapsulation is a feasible solution to protect electrode materials for lithium-ion storage.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000321864300027&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; SCI(E); EI; 29; ARTICLE; 31; 8897-8902; 1 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/154537] |
专题 | 化学与分子工程学院 工学院 |
推荐引用方式 GB/T 7714 | Wang, Chao,Ju, Jing,Yang, Yanquan,et al. In situ grown graphene-encapsulated germanium nanowires for superior lithium-ion storage properties[J]. journal of materials chemistry a,2013. |
APA | Wang, Chao.,Ju, Jing.,Yang, Yanquan.,Tang, Yufeng.,Lin, Jianhua.,...&Huang, Fuqiang.(2013).In situ grown graphene-encapsulated germanium nanowires for superior lithium-ion storage properties.journal of materials chemistry a. |
MLA | Wang, Chao,et al."In situ grown graphene-encapsulated germanium nanowires for superior lithium-ion storage properties".journal of materials chemistry a (2013). |
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