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公开(公告)号：US11811255B2
公开(公告)日：2023-11-07
申请号：US16975615
申请日：2019-01-22
Inventor： Masahiro Soga , Taisuke Yamamoto
CPC classification number: H02J7/00712 , H01M4/364 , H01M4/483 , H01M4/587 , H01M10/0525 , H01M10/44 , H01M10/48 , H02J7/0048 , H01M2004/027
Abstract: A charging method of a non-aqueous electrolyte secondary battery involves a first charging step in which, defining x as the ratio of the capacity of a silicon compound to the rated capacity Q(0.1≤x≤0.5), a battery capacity Q1st that satisfies the expression below is charged at a first fixed current value; and a high current charging step in which, after completion of the first charging step, charging is performed at a fixed current value higher than the first fixed current value.
0.38x+0.063−α≤Q1st/Q≤0.38x+0.063+α Expression:-
公开(公告)号：US20210104728A1
公开(公告)日：2021-04-08
申请号：US16498205
申请日：2018-02-14
Inventor： Tatsuya Akira , Taisuke Yamamoto
IPC: H01M4/133 , H01M4/587 , H01M4/62 , H01M4/36 , H01M10/0525
Abstract: A negative electrode material includes a graphite material, an alkali metal salt, and at least one metal material selected from the group consisting of Fe, Mn, Mg, Ni, Pd, Rh, Os, and Pt. The graphite material contains natural graphite.
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13.发明申请公开(公告)号：US20200020932A1
公开(公告)日：2020-01-16
申请号：US16497609
申请日：2018-02-16
Inventor： Taisuke Asano , Yohei Uchiyama , Taisuke Yamamoto , Tatsuya Akira , Norihisa Yamamoto , Hiroshi Minami
IPC: H01M4/36 , H01M4/58 , H01M4/38 , H01M4/48 , H01M10/0525
Abstract: Disclosed is a negative electrode material for a non-aqueous electrolyte secondary battery, including: a lithium silicate phase; silicon particles dispersed in the lithium silicate phase; and at least one element Me dispersed in the lithium silicate phase, and selected from the group consisting of a rare-earth element and an alkaline-earth metal. The composition of the lithium silicate phase is represented, for example, by the formula: Li2zSiO2+z, and satisfies 0
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