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公开(公告)号：US20230078415A1
公开(公告)日：2023-03-16
申请号：US17795809
申请日：2020-12-17
Inventor： Yusuke Saito , Toshiki Kamidaira , Naoki Seki , Yosuke Sato
Abstract: A negative electrode active material for a secondary battery includes silicate composite particles including silicon particles and a silicate phase. The silicon particles are dispersed in the silicate phase, and the silicon particles contain a first element of at least one selected from the group consisting of germanium and aluminum.
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公开(公告)号：US20240413327A1
公开(公告)日：2024-12-12
申请号：US18690536
申请日：2022-09-14
Inventor： Taisuke Asano , Toshiki Kamidaira , Yosuke Sato
IPC: H01M4/58 , H01M4/02 , H01M10/0525
Abstract: The disclosed negative electrode active material for a secondary battery includes silicate composite particles each including a silicate phase, and silicon particles dispersed in the silicate phase. A peak of an oxygen K-edge energy loss near edge structure (ELNES) at an interface between the silicate phase and the silicon particles is shifted to a lower energy side by 2.0 eV to 3.0 eV relative to a peak of the oxygen K-edge energy loss near edge structure in the silicate phase.
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3.发明公开公开(公告)号：US20240038974A1
公开(公告)日：2024-02-01
申请号：US18268813
申请日：2021-10-08
Inventor： Toshiki Kamidaira , Taisuke Asano , Naoki Seki
Abstract: Composite particles for a non-aqueous electrolyte secondary battery include a lithium zirconate phase, and a silicon phase dispersed in the lithium zirconate phase. In the composite particles, a content proportion MZr of zirconium in all elements other than oxygen is, for example, 14.6 mass % or more and 54.6 mass % or less, and a content proportion MLi of lithium in all elements other than oxygen is, for example, 0.9 mass % or more and 10.4. mass % or less.
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