Highly conductive bridges between graphite spheres to improve the cycle performance of a graphite anode in lithium-ion batteries |
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| Authors: | Hongyu Wang Tatsuo Umeno Koutarou Mizuma Masaki Yoshio |
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| Affiliation: | 1. IM&T Ltd., Advanced Research Center, Saga University, Yoga-machi 1341, Saga 840-0047, Japan;2. Research Center, Mitsui Mining Co. Ltd., Hibiki-machi 1-3, Wakamatsu-ku, Kitakyushu 808-0021, Japan;3. Advanced Research Center, Saga University, Yoga-machi 1341, Saga 840-0047, Japan |
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| Abstract: | Spherical carbon-coated natural graphite (SCCNG) is a promising anode material for lithium-ion batteries, but the smooth surface of graphite spheres is difficult to wet with an aqueous binder solution, and lacks electrical contacts. As a result, the cycle performance of such a graphite anode material is not satisfactory. An effective method has been introduced to tightly connect adjacent SCCNG particles by a highly conductive binder, viz. acetylene black bridges. The effect of the conductive bridges on the cyclability of SCCNG electrode has been investigated. |
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| Keywords: | Spherical natural graphite Acetylene black Cycle performance Lithium-ion batteries Anode material |
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