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Issue 39, 2016
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Pitaya-like microspheres derived from Prussian blue analogues as ultralong-life anodes for lithium storage

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Abstract

To alleviate the capacity degradation of conventional anode materials caused by serious volume expansion and particle aggregation for lithium-ion batteries (LIBs), considerable attention has been devoted to the rational design and synthesis of novel anode architectures. Herein, we report an effective fabrication strategy to implant well-distributed carbide nanoparticles into spherical porous carbon frameworks to form pitaya-like microspheres. Benefiting from their unique components and architecture features, the as-synthesized pitaya-like microspheres can effectively buffer the volume change and prevent aggregation of Co3ZnC nanoparticles during the charge/discharge processes of LIBs. The porous carbon framework provides an unhindered pathway for electron transport and Li+ diffusion and restricts the thin solid-electrolyte interphase (SEI) layer to the outer surface of carbon outer-shells. In LIBs, the anodes deliver a high capacity of 608 mA h g−1 at 100 mA g−1 after 300 charge/discharge cycles and ultrahigh cyclic stability and rate performance with a capacity of 423 mA h g−1 even after 1150 consecutive cycles at 1000 mA g−1.

Graphical abstract: Pitaya-like microspheres derived from Prussian blue analogues as ultralong-life anodes for lithium storage

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Submitted
05 Aug 2016
Accepted
05 Sep 2016
First published
05 Sep 2016

J. Mater. Chem. A, 2016,4, 15041-15048
Article type
Paper

Pitaya-like microspheres derived from Prussian blue analogues as ultralong-life anodes for lithium storage

L. Ma, T. Chen, G. Zhu, Y. Hu, H. Lu, R. Chen, J. Liang, Z. Tie, Z. Jin and J. Liu, J. Mater. Chem. A, 2016, 4, 15041
DOI: 10.1039/C6TA06692E

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