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Title: Encapsulating porous SnO2 into a hybrid nanocarbon matrix for long lifetime Li storage
Authors: Zhao, Yi
Wang, Paul Luyuan
Xi, Shibo
Du, Yonghua
Yao, Qianqian
Guan, Lunhui
Xu, Jason Zhichuan
Keywords: Engineering::Materials
Issue Date: 2017
Source: Zhao, Y., Wang, P. L., Xi, S., Du, Y., Yao, Q., Guan, L., & Xu, J. Z. (2017). Encapsulating porous SnO2 into a hybrid nanocarbon matrix for long lifetime Li storage. Journal of Materials Chemistry A, 5(48), 25609-25617. doi:10.1039/c7ta09544a
Journal: Journal of Materials Chemistry A 
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.
ISSN: 2050-7488
DOI: 10.1039/c7ta09544a
Rights: © 2017 The Royal Society of Chemistry. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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