SnO2 nanowire anchored graphene nanosheet matrix for the superior performance of Li-ion thin film battery anode

Thomas, Rajesh and Rao, Mohan G (2015) SnO2 nanowire anchored graphene nanosheet matrix for the superior performance of Li-ion thin film battery anode. In: JOURNAL OF MATERIALS CHEMISTRY A, 3 (1). pp. 274-280.

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Abstract

All solid state batteries are essential candidate for miniaturizing the portable electronics devices. Thin film batteries are constructed by layer by layer deposition of electrode materials by physical vapour deposition method. We propose a promising novel method and unique architecture, in which highly porous graphene sheet embedded with SnO2 nanowire could be employed as the anode electrode in lithium ion thin film battery. The vertically standing graphene flakes were synthesized by microwave plasma CVD and SnO2 nanowires based on a vapour-liquid-solid (VLS) mechanism via thermal evaporation at low synthesis temperature (620 degrees C). The graphene sheet/SnO2 nanowire composite electrode demonstrated stable cycling behaviours and delivered a initial high specific discharge capacity of 1335 mAh g(-1) and 900 mAh g(-1) after the 50th cycle. Furthermore, the SnO2 nanowire electrode displayed superior rate capabilities with various current densities.

Item Type:	Journal Article
Publication:	JOURNAL OF MATERIALS CHEMISTRY A
Additional Information:	Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	18 Jan 2015 05:29
Last Modified:	18 Jan 2015 05:29
URI:	http://eprints.iisc.ac.in/id/eprint/50666

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