The Design of a LiFePO4/Carbon Nanocomposite With a Core–Shell Structure and Its Synthesis by an In Situ Polymerization Restriction Method

Authors

  • Yonggang Wang Dr.,

    1. Institute of Energy Technology, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, 305-8568 (Japan), Fax: (+81) 29-861-5799
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  • Yarong Wang Dr.,

    1. Institute of Energy Technology, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, 305-8568 (Japan), Fax: (+81) 29-861-5799
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  • Eiji Hosono Dr.,

    1. Institute of Energy Technology, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, 305-8568 (Japan), Fax: (+81) 29-861-5799
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  • Kaixue Wang Dr.,

    1. Institute of Energy Technology, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, 305-8568 (Japan), Fax: (+81) 29-861-5799
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  • Haoshen Zhou Dr.

    1. Institute of Energy Technology, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, 305-8568 (Japan), Fax: (+81) 29-861-5799
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  • H.Z. thanks Mitsuhiro Ichihara for his help with the TEM observations. Y.G.W. acknowledges financial support of a JSPS Fellowship.

Abstract

original image

Truly long-life: A LiFePO4/carbon composite containing a highly crystalline LiFePO4 core with a size of about 20–40 nm and a semi-graphitic carbon shell with a thickness of about 1–2 nm provides both high power and very long cycling life (see picture). The synthetic method can be extended to the preparation of other materials, such as Li4Ti5O12/carbon and Mn3O4/carbon composites.

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