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公开(公告)号：US20220069300A1
公开(公告)日：2022-03-03
申请号：US17422648
申请日：2020-01-16
Inventor： Takaya Tochio , Yoshinori Aoki , Akihiro Kawakita , Yuji Goshima , Takeshi Ogasawara
IPC: H01M4/525 , H01M4/505 , H01M10/0525
Abstract: Positive electrode active material contains: a lithium transition metal oxide that has a layered structure and contains Ni, Nb and a metal element other than Nb having a valence of at least four, also Co as an optional element; and external additive particles that contain at least one element selected from among W, B and Al and are adhered to the particle surface of the lithium transition metal oxide. The percentage of Ni, Nb and Co with respect to the total quantity of metal elements excluding Li in the lithium transition metal oxide satisfy the following ranges: 90 mol. %≤Ni
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公开(公告)号：US11456452B2
公开(公告)日：2022-09-27
申请号：US16471950
申请日：2017-12-14
Inventor： Takaya Tochio , Kaoru Nagata , Takeshi Ogasawara
Abstract: A positive electrode for a non-aqueous electrolyte secondary battery contains a first particle and a second particle. The first particle contains an electrochemically active positive-electrode active material, and the positive-electrode active material contains a lithium transition metal oxide. The second particle contains an electrochemically inactive metal oxide. An electrochemically inactive phosphate adheres to the surface of the second particle.
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公开(公告)号：US20200295366A1
公开(公告)日：2020-09-17
申请号：US16086225
申请日：2017-01-26
Inventor： Koh Masahara , Kaoru Nagata , Takaya Tochio , Taizou Sunano , Akihiro Kawakita , Takeshi Ogasawara
IPC: H01M4/525 , C01G53/00 , H01M10/0525 , H01M4/36
Abstract: This positive electrode active material for non-aqueous electrolyte secondary batteries comprises: lithium transition metal oxide particles; a metal compound which contains a metal element M and adheres to the surfaces of the lithium transition metal oxide particles; and a lithium metal compound which contains lithium (Li) and the metal element M and adheres to the surfaces of the lithium transition metal oxide particles. In this connection, the metal element M is composed of at least one substance that is selected from among aluminum (Al), titanium (Ti), manganese (Mn), gallium (Ga), molybdenum (Mo), tin (Sn), tungsten (W) and bismuth (Bi).
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4.发明授权公开(公告)号：US10347431B2
公开(公告)日：2019-07-09
申请号：US15667400
申请日：2017-08-02
Inventor： Takaya Tochio , Yasuhiko Kishinaga , Takuya Yamashita
Abstract: A solid electrolytic capacitor includes a capacitor element having an anode body that is a porous sintered body having a hexahedral shape, an anode lead, a dielectric layer, and a solid electrolyte layer. One end of the anode lead is embedded into the anode body from a first surface of the anode body. The anode body includes a second surface and a third surface which are opposite to each other. The anode body has a first region including the second surface, a second region including the third surface, and a third region interposed between the first region and the second region. The third region has lower density than each of the first region and the second region. An average thickness T3 of the third region and a thickness TL of the anode lead satisfy a relationship T3
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公开(公告)号：US20230299282A1
公开(公告)日：2023-09-21
申请号：US18032847
申请日：2021-10-28
Inventor： Takaya Tochio , Takeshi Ogasawara
IPC: H01M4/525
CPC classification number: H01M4/525 , H01M2004/028
Abstract: A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure is provided with a positive electrode, a negative electrode and a nonaqueous electrolyte; the positive electrode contains a lithium transition metal composite oxide that contains Ni, Nb and M (M is at least one element selected from among Ca and Sr), said lithium transition metal composite oxide optionally containing Co; the contents of Ni, Nb, M and Co in the lithium transition metal composite oxide are respectively within specific ranges; the negative electrode comprises a negative electrode mixture layer that contains a negative electrode active material, and a coating film that is formed on the surface of the negative electrode mixture layer, while containing Nb and M; and the contents of Nb and M in the negative electrode are respectively within specific ranges.
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Patent Agency Ranking
公开(公告)号：US20210408538A1
公开(公告)日：2021-12-30
申请号：US17295213
申请日：2019-10-31
Inventor： Yoshinori Aoki , Takeshi Ogasawara , Takaya Tochio
Abstract: A positive electrode active material for batteries wherein the ratio of Ni, the ratio of Nb and the ratio of Co relative to the total amount of metal elements excluding Li in a lithium transition metal oxide are respectively within the range of 90 mol %≤Ni
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公开(公告)号：US20210020937A1
公开(公告)日：2021-01-21
申请号：US17040154
申请日：2019-02-26
Inventor： Takaya Tochio , Takeshi Ogasawara
IPC: H01M4/525 , H01M10/0525
Abstract: A positive electrode active substance for a non-aqueous electrolyte secondary battery according to this embodiment is characterized by having a lithium transition metal oxide that contains Ni and Al, wherein: Ni content in the lithium transition metal oxide is 91 mol % or greater with respect to the total number of moles of metal elements excluding Li; the lithium transition metal oxide further contains 0.02 mol % or more of sulphate ion; and the lithium transition metal oxide, when subjected to X ray diffraction, produces an X ray diffraction pattern in which the half width n of the diffraction peak of the (208) surface is 0.30°≤n≤0.50°.
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8.发明申请公开(公告)号：US20200335780A1
公开(公告)日：2020-10-22
申请号：US16957180
申请日：2018-12-12
Inventor： Takaya Tochio , Toshinobu Kanai , Takeshi Ogasawara
IPC: H01M4/505 , H01M10/0525 , H01M4/525 , H01M4/04 , H01M10/0569 , H01M10/0568 , H01M2/16
Abstract: The method for manufacturing a positive electrode active material for a non-aqueous electrolyte secondary battery according to one embodiment of the present invention comprises: a first step for adding an alkaline solution having a tungsten compound dissolved therein to a lithium-metal composite oxide powder represented by general formula LizNi1-x-yCoxMyO2 (where 0≤x≤0.1, 0≤y≤0.1, and 0.97≤z≤1.20 are satisfied, and M is at least one type of element selected from among Mn, W, Mg, Mo, Nb, Ti, Si, and Al), and mixing same; and a second step for heating the mixture of the alkaline solution and the lithium-metal composite oxide powder at 100-600° C., wherein the amount of the alkaline solution to be added in the first step is 0.1-10 mass % with respect to the amount of the lithium-metal composite oxide powder.
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公开(公告)号：US20250158055A1
公开(公告)日：2025-05-15
申请号：US19028043
申请日：2025-01-17
Inventor： Koh Masahara , Kaoru Nagata , Takaya Tochio , Taizou Sunano , Akihiro Kawakita , Takeshi Ogasawara
Abstract: This positive electrode active material for non-aqueous electrolyte secondary batteries comprises: lithium transition metal oxide particles; a metal compound which contains a metal element M and adheres to the surfaces of the lithium transition metal oxide particles; and a lithium metal compound which contains lithium (Li) and the metal element M and adheres to the surfaces of the lithium transition metal oxide particles. In this connection, the metal element M is composed of at least one substance that is selected from among aluminum (Al), titanium (Ti), manganese (Mn), gallium (Ga), molybdenum (Mo), tin (Sn), tungsten (W) and bismuth (Bi).
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公开(公告)号：US20250140846A1
公开(公告)日：2025-05-01
申请号：US19002508
申请日：2024-12-26
Inventor： Takaya Tochio , Yoshinori Aoki , Akihiro Kawakita , Yuji Goshima , Takeshi Ogasawara
IPC: H01M4/525 , H01M4/02 , H01M4/505 , H01M10/0525
Abstract: Positive electrode active material contains: a lithium transition metal oxide that has a layered structure and contains Ni, Nb and a metal element other than Nb having a valence of at least four, also Co as an optional element; and external additive particles that contain at least one element selected from among W, B and Al and are adhered to the particle surface of the lithium transition metal oxide. The percentage of Ni, Nb and Co with respect to the total quantity of metal elements excluding Li in the lithium transition metal oxide satisfy the following ranges: 90 mol. %≤Ni
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