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Issue 5, 2017
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Mesoporous graphene/carbon framework embedded with SnO2 nanoparticles as a high-performance anode for lithium storage

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Abstract

The huge volume variation and poor electronic conductivity of tin oxide (SnO2) during the discharge/charge process greatly limit its practical application in lithium ion batteries (LIBs). Hybridization with graphene is a widely-used method to improve its electrochemical performance, but it still faces some limitations. In this work, we integrate carbon encapsulation with graphene hybridization to synthesize a sandwich-like carbon-coated SnO2/graphene composite via a flexible method. In this case, a mesoporous graphene/carbon framework (MCF) derived from acid etching of an as-prepared graphene@Fe3O4@C composite was used as a robust matrix for the embedment of SnO2. When evaluated as an anode material for LIBs, the resultant MCF@SnO2 composite exhibits a high second reversible capacity of 1205 mA h g−1 at 0.2 A g−1, excellent cycling performance with 668 mA h g−1 capacity retention after 200 cycles at 1.0 A g−1, and a good rate capability. This facile strategy could be further extended to embed other metal oxide nanoparticles into the mesoporous carbon framework for applications in energy conversion and storage.

Graphical abstract: Mesoporous graphene/carbon framework embedded with SnO2 nanoparticles as a high-performance anode for lithium storage

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Publication details

The article was received on 30 Jan 2017, accepted on 16 Mar 2017 and first published on 16 Mar 2017


Article type: Research Article
DOI: 10.1039/C7QI00057J
Citation: Inorg. Chem. Front., 2017,4, 889-897
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    Mesoporous graphene/carbon framework embedded with SnO2 nanoparticles as a high-performance anode for lithium storage

    X. Wang, L. Zhang, C. Zhang and P. Wu, Inorg. Chem. Front., 2017, 4, 889
    DOI: 10.1039/C7QI00057J

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