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公开(公告)号：EP4394935A1
公开(公告)日：2024-07-03
申请号：EP22860936.8
申请日：2022-06-14
IPC分类号： H01M4/38 , H01M10/052 , H01M10/0562 , H01M10/0565
CPC分类号： Y02E60/10 , H01M10/0565 , H01M10/052 , H01M4/38 , H01M10/0562
摘要： The present invention provides: a negative electrode active material which has a La3Ni2Sn7 crystal structure, while having a high weight energy density, and a lithium ion battery which uses this negative electrode active material. A negative electrode active material according to one embodiment of the present disclosure is contained in a negative electrode of a lithium ion battery, and is represented by general formula M3Me2X7 (wherein M comprises at least one of La and Ca; Me comprises at least one element that is selected from the group consisting of Mn, Ni, Fe and Co; and X comprises at least one element that is selected from the group consisting of Ge, Si, Sn, and Al). With respect to the XRD pattern obtained by XRD measurement wherein Cu is used for an anticathode, the half-value width of the diffraction peak of the (1 171) plane of the negative electrode active material is 0.4713° or more.
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公开(公告)号：EP4394934A1
公开(公告)日：2024-07-03
申请号：EP22860929.3
申请日：2022-06-10
IPC分类号： H01M4/38 , H01M10/0562
CPC分类号： Y02E60/10 , H01M4/38 , H01M10/0562
摘要： Provided are: a negative electrode active substance having a La3Ni2Sn7 crystal structure and a high gravimetric energy density; and a lithium-ion battery using the same. The negative electrode active material according to one embodiment of the present disclosure is included in the negative electrode of a lithium-ion battery, and is represented by general formula M3Me2X7 (where: M includes La and/or Ca; Me includes at least one element selected from the group consisting of Mn, Ni, Fe and Co; X includes at least one element selected from the group consisting of Ge, Si, Sn, and Al). The dislocation density of the negative electrode active material is at least 1 × 1015 cm-2.
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公开(公告)号：EP4131478A1
公开(公告)日：2023-02-08
申请号：EP21778801.7
申请日：2021-03-30
摘要： This lithium ion battery comprises a positive electrode having a positive electrode mixture layer that contains a positive electrode active material, and a negative electrode having a negative electrode mixture layer that contains a negative electrode active material; and this lithium ion battery is charged and discharged by the movement of lithium ions between the positive electrode and the negative electrode. The negative electrode mixture layer contains a negative electrode active material that is represented by general formula M 3 Me 2 X 7 (wherein M contains at least one element that is selected from the group consisting of La, Ce, Ba, Sr, Zr, Ca, Mg and Y; Me contains at least one element that is selected from the group consisting of Ti, V, Cr, Nb, Mn, Ni, Fe, Co and Cu; and X contains at least one element that is selected from the group consisting of Ge, Si, Sn, Al, P, Sb and B), and a binder that contains ammonium carboxymethyl cellulose (NH 4 -CMC).
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公开(公告)号：EP4205884A1
公开(公告)日：2023-07-05
申请号：EP21861553.2
申请日：2021-08-24
摘要： A negative electrode active material for a secondary battery includes an intermetallic compound having a cage structure. The cage structure is constituted of at least one first atom located within a cage, and a plurality of second atoms arranged in a cage-like form so as to surround the first atom. The first atom is a cerium atom, and the plurality of the second atoms include 8 or more and 17 or less silicon atoms.
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公开(公告)号：EP4205885A1
公开(公告)日：2023-07-05
申请号：EP21861554.0
申请日：2021-08-24
摘要： A negative electrode active material for a secondary battery includes an intermetallic compound having a cage structure. The cage structure is constituted of at least one first atom located within a cage, and a plurality of second atoms arranged in a cage-like form so as to surround the first atom. The first atom is a zirconium atom, and the plurality of the second atoms include 8 or more and 16 or less silicon atoms.
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