NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERIES, AND LITHIUM-ION SECONDARY BATTERY
This negative electrode for lithium-ion secondary batteries comprises a binder and a negative electrode active material that contains silicon and has ridges on the surface thereof. The binder includes a COOX group, and X is any element selected from the group consisting of Li, Na, and K. The specifi...
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Main Authors | , , , , |
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Format | Patent |
Language | English French Japanese |
Published |
06.09.2024
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Subjects | |
Online Access | Get full text |
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Summary: | This negative electrode for lithium-ion secondary batteries comprises a binder and a negative electrode active material that contains silicon and has ridges on the surface thereof. The binder includes a COOX group, and X is any element selected from the group consisting of Li, Na, and K. The specific surface area S (m2/g) of the negative electrode active material, the weight wa of the negative electrode active material, and the weight wb of the binder satisfy the relationship 0.5≤{wb/(wa+wb)}/S×100≤5.0.
L'électrode négative pour batterie secondaire au lithium-ion de l'invention est équipée : d'une matière active d'électrode négative contenant un silicium, et présentant une nervure à sa surface ; et d'un liant. Ledit liant possède un groupe COOX, X étant choisi dans un ensemble constitué de Li, Na et K. La surface sépécifique (S) (m2/g) de ladite matière active d'électrode négative, la masse (wa) de ladite matière active d'électrode négative et la masse (wb) dudit liant, satisfont la relation 0,5≦{wb/(wa+wb)}/S×100≦5,0.
このリチウムイオン二次電池用負極は、シリコンを含み、表面に稜線がある負極活物質と、バインダーと、を備え、前記バインダーは、COOX基を有し、Xは、Li、Na、Kからなる群から選択されるいずれかであり、前記負極活物質の比表面積S(m2/g)と、前記負極活物質の重量waと、前記バインダーの重量wbとが、0.5≦{wb/(wa+wb)}/S×100≦5.0の関係を満たす。 |
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Bibliography: | Application Number: WO2024JP04111 |