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Crop-Derived Polysaccharides as Binders for High-Capacity Silicon/Graphite-Based Electrodes in Lithium-Ion Batteries

Authors

  • Masahiro Murase,

    1. Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8061 (Japan), Fax: (+81) 3-5228-8749
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  • Prof. Naoaki Yabuuchi,

    1. Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8061 (Japan), Fax: (+81) 3-5228-8749
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  • Zhen-Ji Han,

    1. Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8061 (Japan), Fax: (+81) 3-5228-8749
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  • Dr. Jin-Young Son,

    1. Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-gun, Hyogo, 679-5198 (Japan)
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  • Dr. Yi-Tao Cui,

    1. Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-gun, Hyogo, 679-5198 (Japan)
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  • Dr. Hiroshi Oji,

    1. Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-gun, Hyogo, 679-5198 (Japan)
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  • Prof. Shinichi Komaba

    Corresponding author
    1. Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8061 (Japan), Fax: (+81) 3-5228-8749
    • Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 162-8061 (Japan), Fax: (+81) 3-5228-8749
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Abstract

original image

Rice to power: Amylopectin is a major component of agricultural products such as corn, potato, and rice. Silicon–graphite electrodes are prepared by using slurries of these polysaccharides as binders. Compared to the conventionally used binder PVdF, they exhibit drastically improved electrode performance in Li cells. The improved performance is coupled to the degree of branching.

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