NEGATIVE-ELECTRODE MATERIAL FOR LITHIUM-ION SECONDARY CELL, METHOD FOR MANUFACTURING SAME, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY CELL, AND LITHIUM-ION SECONDARY CELL

A negative-electrode material for a lithium-ion secondary cell, the negative-electrode material containing composite particles having a structure in which a plurality of flat graphite particles are layered, and being such that the grain size distribution D90/D10 of the composite particles is 2.0-5.0...

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Bibliographic Details
Main Authors TSUCHIYA, Hideyuki, SUGA, Keita, TOKUDA, Yoshiyuki
Format Patent
LanguageEnglish
French
Japanese
Published 05.08.2021
Subjects
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Summary:A negative-electrode material for a lithium-ion secondary cell, the negative-electrode material containing composite particles having a structure in which a plurality of flat graphite particles are layered, and being such that the grain size distribution D90/D10 of the composite particles is 2.0-5.0, or the grain size distribution D90/D10 of the plurality of flat graphite particles is 2.0-4.4.  L'invention concerne un matériau d'électrode négative pour une cellule secondaire au lithium-ion, le matériau d'électrode négative contenant des particules composites ayant une structure dans laquelle une pluralité de particules de graphite plates sont stratifiées, et étant telle que la distribution granulométrique D90/D10 des particules composites est de 2,0-5,0, ou la distribution granulométrique D90/D10 de la pluralité de particules de graphite plates est de 2,0 à 4,4.  リチウムイオン二次電池用負極材は、複数の扁平状黒鉛粒子が積層された構造を有する複合粒子を含み、前記複合粒子の粒度分布D90/D10が2.0~5.0であるか、前記複数の扁平状黒鉛粒子の粒度分布D90/D10が2.0~4.4である。
Bibliography:Application Number: WO2020JP03463