Title

Enhanced reversible lithium storage in a nanosize silicon/graphene composite

RIS ID

31886

Publication Details

Chou, S, Wang, J, Choucair, M, Liu, HK, Stride, JA & Dou, SX (2010), Enhanced reversible lithium storage in a nanosize silicon/graphene composite, Electrochemistry Communications, 12(2), pp. 303-306.

Abstract

Si/graphene composite was prepared by simply mixing of commercially available nanosize Si and graphene. Electrochemical tests show that the Si/graphene composite maintains a capacity of 1168 mAh g-1 and an average coulombic efficiency of 93% up to 30 cycles. EIS indicates that the Si/graphene composite electrode has less than 50% of the charge-transfer resistance compared with nanosize Si electrode, evidencing the enhanced ionic conductivity of Si/graphene composite. The enhanced cycling stability is attributed to the fact that the Si/graphene composite can accommodate large volume charge of Si and maintain good electronic contact.

Grant Number

ARC/DP0987805

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.elecom.2009.12.024