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Synthesis and characterisation of reduced graphene oxide/bismuth composite for electrodes in electrochemical Eenergy storage devices.

Wang, J. and Zhang, H. and Hunt, M. R. C. and Charles, A. and Tang, J. and Bretcanu, O. and Walker, D. and Hassan, K. T. and Sun, Y. and Siller, L. (2017) 'Synthesis and characterisation of reduced graphene oxide/bismuth composite for electrodes in electrochemical Eenergy storage devices.', ChemSusChem., 10 (2). pp. 363-371.

Abstract

A reduced graphene oxide/bismuth (rGO/Bi) composite was synthesized for the first time using a polyol process at a low reaction temperature and with a short reaction time (60 °C and 3 hours, respectively). The as-prepared sample is structured with 20–50 nm diameter bismuth particles distributed on the rGO sheets. The rGO/Bi composite displays a combination of capacitive and battery-like charge storage, achieving a specific capacity value of 773 C g−1 at a current density of 0.2 A g−1 when charged to 1 V. The material not only has good power density but also shows moderate stability in cycling tests with current densities as high as 5 A g−1. The relatively high abundance and low price of bismuth make this rGO/Bi material a promising candidate for use in electrode materials in future energy storage devices.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1002/cssc.201601553
Publisher statement:This is the peer reviewed version of the following article: J. Wang, H. Zhang, M. R. C. Hunt, A. Charles, J. Tang, O. Bretcanu, D. Walker, K. T. Hassan, Y. Sun, L. Šiller, ChemSusChem 2017, 10(2), 363-371, which has been published in final form at https://doi.org/10.1002/cssc.201601553. This article may be used for non-commercial purposes in accordance With Wiley-VCH Terms and Conditions for self-archiving.
Date accepted:25 November 2016
Date deposited:26 January 2017
Date of first online publication:18 January 2017
Date first made open access:18 January 2018

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