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Issue 48, 2017
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Encapsulating porous SnO2 into a hybrid nanocarbon matrix for long lifetime Li storage

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Abstract

To overcome the low conductivity and large volume variation of metal oxide anodes, the electrode microstructure design for these metal oxides appeared to be the most promising strategy for achieving the desired Li storage performance. In this article, we report on a rational design of the carbon/SnO2 microstructure, in which porous SnO2 nanoparticles are encapsulated into the graphene matrix and additional carbon coating layer. As an anode material for LIBs, the as-prepared G@p-SnO2@C composite exhibited an ultra-long cycling life up to 1800 cycles. It can sustain high specific capacities of 602 and 418 mA h g−1 at 1.5 A g−1 after 1000 and 1800 cycles, respectively. The excellent battery performance could be attributed to the unique architecture of this composite, which enhances electrical conductivity, provides sufficient interior void space to accommodate the volume variation of SnO2, mitigates the aggregation, and preserves the integrity of electrodes during cycling.

Graphical abstract: Encapsulating porous SnO2 into a hybrid nanocarbon matrix for long lifetime Li storage

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Publication details

The article was received on 30 Oct 2017, accepted on 20 Nov 2017 and first published on 20 Nov 2017


Article type: Paper
DOI: 10.1039/C7TA09544A
Citation: J. Mater. Chem. A, 2017,5, 25609-25617
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    Encapsulating porous SnO2 into a hybrid nanocarbon matrix for long lifetime Li storage

    Y. Zhao, L. P. Wang, S. Xi, Y. Du, Q. Yao, L. Guan and Z. J. Xu, J. Mater. Chem. A, 2017, 5, 25609
    DOI: 10.1039/C7TA09544A

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