Flexible free-standing graphene-silicon composite film for lithium-ion batteries

被引：241

作者：

Wang, Jia-Zhao ^{[1
]}

Zhong, Chao

Chou, Shu-Lei

Liu, Hua-Kun

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2519, Australia

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 11期

基金：

澳大利亚研究理事会;

关键词：

Graphene-silicon composite; Free-standing electrode; In-situ filtration method; Lithium-ion battery; CARBON NANOTUBE PAPER; ELECTROCHEMICAL PROPERTIES; ELECTRODES; STORAGE; LAYER; ANODE; NANOCOMPOSITE; PERFORMANCE; CAPACITY;

D O I：

10.1016/j.elecom.2010.08.008

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Flexible, free-standing, paper-like, graphene-silicon composite materials have been synthesized by a simple, one-step, in-situ filtration method. The Si nanoparticles are highly encapsulated in a graphene nanosheet matrix. The electrochemical results show that graphene-Si composite film has much higher discharge capacity beyond 100 cycles (708 mAh g(-1)) than that of the cell with pure graphene (304 mAh g(-1)). The graphene functions as a flexible mechanical support for strain release, offering an efficient electrically conducting channel, while the nanosized silicon provides the high capacity. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1467 / 1470

页数：4

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