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Composite of few-layer MoO3 nanosheets with graphene as a high performance anode for sodium-ion batteries

Sreedhara, MB and Santhosha, AL and Bhattacharyya, Aninda J and Rao, CNR (2016) Composite of few-layer MoO3 nanosheets with graphene as a high performance anode for sodium-ion batteries. In: JOURNAL OF MATERIALS CHEMISTRY A, 4 (24). pp. 9466-9471.

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Official URL: http://dx.doi.org/10.1039/c6ta02561g

Abstract

Identification of an appropriate anode material is one of the major challenges for rechargeable Na-ion batteries. Layered MoO3 is a potential alternative as it can reversibly store large amounts of sodium. However, MoO3 is a poor electronic conductor and undergoes large volume changes during repeated cycling. Ultrathin nanosheets of 1-3 bilayers of MoO3 are synthesized starting from the oxidation of few-layer MoS2 nanosheets. The MoO3 nanosheets are subsequently chemically tagged with optimum amounts of rGO leading to the formation of a 3D MoO3-rGO composite. The MoO3-rGO composite exhibits remarkable electrochemical stability, cyclability and high rate capability over a wide range of operating currents (0.05-1 C). This simple and novel material design strategy of MoO3-rGO provides the most optimum condition for buffering the volume changes during repeated cycling and provides facile pathways for Na-ion and electron transport in MoO3.

Item Type: Journal Article
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 Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Id for Latest eprints
Date Deposited: 19 Aug 2016 06:03
Last Modified: 19 Aug 2016 06:03
URI: http://eprints.iisc.ac.in/id/eprint/54381

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