-
公开(公告)号：US20240297347A1
公开(公告)日：2024-09-05
申请号：US18268819
申请日：2021-12-17
Inventor： Yohei Uchiyama , Kiyohiro Ishii
IPC: H01M10/0569 , H01M4/40 , H01M4/46 , H01M10/052 , H01M10/0567 , H01M10/0568 , H01M10/42
CPC classification number: H01M10/0569 , H01M4/405 , H01M4/466 , H01M10/052 , H01M10/0567 , H01M10/0568 , H01M10/4235 , H01M2300/0034
Abstract: A lithium secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The negative electrode includes a lithium alloy containing magnesium. At the negative electrode, a lithium metal deposits during charge, and the lithium metal dissolves during discharge. The non-aqueous electrolyte contains a hydrofluoroether and lithium ions.
-
公开(公告)号：US12062788B2
公开(公告)日：2024-08-13
申请号：US16963611
申请日：2019-01-21
Inventor： Yohei Uchiyama , Norihisa Yamamoto , Tatsuya Akira
CPC classification number: H01M4/58 , H01M4/131 , H01M4/134 , H01M10/0525 , H01M2004/027
Abstract: This negative electrode active material for a secondary cell which is one aspect of the present disclosure comprises: a silicate phase that contains Li, Si, and Mx (Mx alkali metal, alkaline earth metal, and an element other than Si); silicon particles dispersed in the silicate phase; and oxide particles that contain Zr dispersed in the silicate phase. The content of each element with respect to the total of the elements other than oxygen in the silicate phase is 3 to 45 mol % for Li, 40 to 78 mol % for Si, and 1 to 40 mol % for Mx.
-
13.发明公开公开(公告)号：US20240234722A9
公开(公告)日：2024-07-11
申请号：US18275922
申请日：2022-01-12
Inventor： Keita Okazaki , Yohei Uchiyama
CPC classification number: H01M4/5825 , H01M4/364 , H01M10/00 , H01M2004/021
Abstract: A negative electrode active material for a secondary battery includes composite particles. The composite particles include a lithium silicate phase and a silicon phase dispersed in the lithium silicate phase, wherein the silicon phase has lined portions in the lithium silicate phase, a maximum diameter D1 and a minimum diameter D2 of the lined portions satisfy 3≤D1/D2. The composite particles include a metal Me dispersed in the lithium silicate phase, and the metal Me is at least one selected from the group consisting of Fe, Pb, Zn, Sn, Cu, Ni, Cr, Zr, and Ti.
-
公开(公告)号：US11984604B2
公开(公告)日：2024-05-14
申请号：US16767774
申请日：2018-10-26
Inventor： Yohei Uchiyama , Taisuke Yamamoto , Tatsuya Akira , Norihisa Yamamoto , Hiroshi Minami
CPC classification number: H01M4/661 , H01M4/131 , H01M4/386 , H01M4/583 , H01M4/622 , H01M10/0525 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: A lithium ion battery including a negative electrode having a negative electrode active material layer that contains lithium silicate particles and a binder. The lithium silicate particles include composite particles including a lithium silicate phase and silicon particles dispersed in the lithium silicate phase, wherein a carbon material is present inside the composite particles, and an area ratio of the carbon material occupying a cross section of the composite particles is 0.008 to 6%. The binder includes at least a first resin, wherein the first resin is at least cue selected from the group consisting of polyacrylic acid, a polyacrylic acid salt, and their derivatives. The first resin is contained in an amount of 2 mass % or less in the negative electrode active material layer.
-
公开(公告)号：US20220263066A1
公开(公告)日：2022-08-18
申请号：US17630656
申请日：2020-07-21
Inventor： Taisuke Asano , Yohei Uchiyama , Yosuke Sato
Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery, including a silicate phase, silicon particles dispersed in the silicate phase, and a crystal phase dispersed in the silicate phase. The silicate phase contains at least one element E1 selected from the group consisting of alkali metal elements and Group 2 elements. The crystal phase contains a rare earth element, silicon, and oxygen.
-
Patent Agency Ranking
公开(公告)号：US20220190314A1
公开(公告)日：2022-06-16
申请号：US17439944
申请日：2020-03-11
Inventor： Yohei Uchiyama , Taisuke Asano , Yosuke Sato , Masahiro Soga
IPC: H01M4/134 , H01M10/0567 , H01M10/0525 , H01M4/36
Abstract: A negative electrode for a non-aqueous electrolyte secondary battery includes a negative electrode mixture comprising a negative electrode active material capable of electrochemically absorbing and releasing lithium ions, a negative electrode additive, and an acrylic resin. The negative electrode active material includes a silicon containing material. The Negative electrode additive includes at least silicon dioxide and a group 2 element oxide, and the group 2 element oxide includes at least one selected from the group consisting of BeO, MgO, CaO, SrO, BaO and RaO. The acrylic resin includes at least a (meth)acrylic acid salt unit. The content of the group 2 element oxide in the negative electrode additive is less than 20 mass % relative to a total amount of the negative electrode additive.
-
公开(公告)号：US20210057727A1
公开(公告)日：2021-02-25
申请号：US16963585
申请日：2019-01-21
Inventor： Tatsuya Akira , Yohei Uchiyama , Norihisa Yamamoto
IPC: H01M4/36 , H01M10/0525 , H01M4/38 , H01M4/48
Abstract: A negative electrode active substance for a secondary battery, which is one embodiment of the present disclosure, comprises: a silicate phase which contains Li, Si and Mx (Mx is an alkali metal, an alkaline earth metal or an element other than Si); silicon particles dispersed in the silicate phase; and metal particles which are dispersed in the silicate phase and are constituted mainly from one or more metals selected from among Fe, Cr, Ni, Mn, Cu, Mo, Zn and Al or an alloy of these. In the silicate phase, the content of the following elements, relative to the total amount of elements other than oxygen, is: 3-45 mol % of Li; 40-78 mol % of Si; and 1-40 mol % of Mx.
-
公开(公告)号：US20200321611A1
公开(公告)日：2020-10-08
申请号：US16957182
申请日：2018-12-26
Inventor： Yohei Uchiyama , Norihisa Yamamoto , Tatsuya Akira
IPC: H01M4/36 , H01M4/485 , H01M10/0525
Abstract: A negative electrode active substance particle according to one embodiment of the present invention, comprises a mother particle that has: a silicate phase that includes Na, Si, and at least one element selected from M, M1, M2, M3 and M4 (M is an alkali earth metal, and M1, M2, M3 and M4 are elements other than alkali metals, alkali earth metals or Si); and silicon particles dispersed in the silicate phase. The contents of the elements in the silicate phase are: 9-52 mol % of Na; 3-50 mol % of M, M1, M2, M3 and M4; and at least 25 mol % of Si.
-
19.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
-
公开(公告)号：US12113216B2
公开(公告)日：2024-10-08
申请号：US17270519
申请日：2019-08-23
Inventor： Yohei Uchiyama , Taisuke Asano , Yosuke Sato
CPC classification number: H01M4/5825 , H01M4/382 , H01M4/386 , H01M2004/027
Abstract: A negative electrode active material for a secondary battery includes silicate composite particles each of which contain a silicate phase and silicon particles dispersed in the silicate phase, the silicate phase is an oxide phase containing Si, O, and alkali metals, and the alkali metals include at least Na and K.
-
-
-
-
-
-
-
-
-
Search Results
40
records
(took 0.021 seconds)
