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公开(公告)号：US20240291107A1
公开(公告)日：2024-08-29
申请号：US18458763
申请日：2023-08-30
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yasuyuki HOTTA , Keigo HOSHINA
IPC: H01M50/451 , H01M4/36 , H01M10/0525 , H01M50/491
CPC classification number: H01M50/451 , H01M4/366 , H01M10/0525 , H01M50/491 , H01M2004/027 , H01M2004/028 , H01M2220/20
Abstract: According to one embodiment, a secondary battery provided with a negative electrode including a negative electrode active material-containing layer, a positive electrode including a positive electrode active material-containing layer, a separator located between the negative electrode and the positive electrode, and an aqueous electrolyte is provided. The separator includes a composite layer containing inorganic solid particles and a polymeric material. A particle size distribution of the inorganic solid particles in the composite layer has at least two peaks. A frequency FPS of a peak top PS of a peak on a smallest particle diameter side and a frequency FPL of a peak top PL of a peak on a largest particle diameter side in the particle size distribution have a relationship of 0.9≤FPS/FPL≤5. A porosity of the composite layer is less than both of a porosity of the negative electrode active material-containing layer and a porosity of the positive electrode active material-containing layer, and is 1% or more and less than 15%.
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公开(公告)号：US20230299390A1
公开(公告)日：2023-09-21
申请号：US17823651
申请日：2022-08-31
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Kakuya UEDA , Keigo HOSHINA
IPC: H01M12/08 , H01M10/0562 , H01M4/40
CPC classification number: H01M12/08 , H01M10/0562 , H01M4/405 , H01M2300/0071 , H01M2004/027
Abstract: According to one embodiment, provided is an air battery including a negative electrode, an air electrode to which oxygen is supplied, a solid electrolyte layer positioned between the negative electrode and the air electrode, an aqueous electrolyte layer positioned between the solid electrolyte layer and the air electrode, and a proton conduction layer positioned between the aqueous electrolyte layer and the air electrode. The aqueous electrolyte layer includes an aqueous electrolyte including a polyprotic acid having two or more carboxyl groups, an electrolyte salt, and water.
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公开(公告)号：US20220085638A1
公开(公告)日：2022-03-17
申请号：US17186054
申请日：2021-02-26
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Tomoko SUGIZAKI , Tomoe KUSAMA , Yuta KANAI , Keigo HOSHINA , Tetsuya SASAKAWA , Ryosuke YAGI , Yasuhiro HARADA , Norio TAKAMI
Abstract: According to one embodiment, a storage battery includes one or more first batteries that include a first active material as a negative electrode active material, and one or more second batteries that include a second active material having an operation electric potential lower than that of the first active material as a negative electrode active material. Charge and the discharge of the second batteries are stopped based on a fact that a temperature of the storage battery is lower than a temperature threshold. The second batteries are caused to charge or discharge based on a fact that the temperature of the storage battery is equal to or higher than the temperature threshold.
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公开(公告)号：US20210399307A1
公开(公告)日：2021-12-23
申请号：US17466391
申请日：2021-09-03
Applicant: Kabushiki Kaisha Toshiba
Inventor： Tetsuro KANO , Yuki WATANABE , Hidetoshi WATANABE , Keigo HOSHINA
IPC: H01M4/62 , H01M4/505 , H01M4/525 , H01M4/485 , H01M10/0525
Abstract: An electrode includes an active material-containing layer that contains active material particles and a binder containing a polymer. The active material particles contain a lithium-containing nickel-cobalt-manganese composite oxide represented by LiaNi(1−x−y)CoxMnyMzO2 where 0.9≤a≤1.2, 0
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公开(公告)号：US20210296643A1
公开(公告)日：2021-09-23
申请号：US17009927
申请日：2020-09-02
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Keigo HOSHINA , Yasunobu YAMASHITA , Shinsuke MATSUNO
Abstract: According to one embodiment, a secondary battery including a positive electrode, a negative electrode, an insulating layer, and a nonaqueous electrolyte is provided. The positive electrode includes a positive electrode active material-containing layer containing a lithium nickel cobalt manganese composite oxide. The negative electrode includes a negative electrode active material-containing layer having a first surface. The insulating layer includes a solid electrolyte layer having a second surface that is at least partly opposed to or partly in contact with the first surface and containing a Li ion conductive oxide. At least part of the second surface or the first and second surfaces includes a Mn-containing substance. An abundance ratio of Mn on the second surface is higher than that on the first surface.
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Patent Agency Ranking
公开(公告)号：US20210296631A1
公开(公告)日：2021-09-23
申请号：US17007147
申请日：2020-08-31
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Keigo HOSHINA , Wen ZHANG , Tetsuya SASAKAWA , Yasuhiro HARADA , Norio TAKAMI
IPC: H01M4/131 , H01M4/134 , H01M4/583 , H01M2/10 , H01M10/0525
Abstract: According to one embodiment, provided is a secondary battery including a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a niobium-titanium composite oxide having fluorine atoms on at least part of a surface the niobium-titanium composite oxide. An abundance ratio AF of fluorine atoms, an abundance ratio ATi of titanium atoms, and an abundance ratio ANb of niobium atoms on a surface of the negative electrode according to X-ray photoelectron spectroscopy satisfy a relationship of 3.5≤AF/(ATi+ANb)≤50.
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公开(公告)号：US20200091505A1
公开(公告)日：2020-03-19
申请号：US16296844
申请日：2019-03-08
Inventor： Keigo HOSHINA , Wen Zhang , Yasuhiro Harada , Norio Takami
IPC: H01M4/36 , H01M10/0525 , H01M10/0566 , H01M4/505 , H01M4/131 , H01M4/62 , H01M4/485
Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer. The active material-containing layer includes an active material and a conductive agent. The active material contains primary particles of a niobium-titanium composite oxide. The conductive agent contains fibrous carbon. The primary particles have an average particle size of 0.3 μm or more and 2 μm or less. At least a part of a surface of the primary particles is coated with the fibrous carbon. A covering ratio of the primary particles by the fibrous carbon is 0.01% or more and 40% or less.
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公开(公告)号：US20190173121A1
公开(公告)日：2019-06-06
申请号：US16257103
申请日：2019-01-25
Inventor： Dai YAMAMOTO , Keigo HOSHINA , Ryo HARA , Norio TAKAMI , Yasuhiro HARADA
Abstract: According to one embodiment, provided is a nonaqueous electrolyte battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material containing orthorhombic Na-containing niobium-titanium composite oxide particles represented by general formula (1) Li2+vNa2−yM1xTi6−y−zNbyM2zO14+δ. In general formula (1), M1 is one or two or more elements selected from the group consisting of Cs, K, Sr, Ba, and Ca, M2 is one or two or more elements selected from the group consisting of Zr, Al, Sn, V, Ta, Mo, W, Fe, Co, and Mn, 0≤v
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公开(公告)号：US20170365886A1
公开(公告)日：2017-12-21
申请号：US15692103
申请日：2017-08-31
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Keigo HOSHINA , Yoshiyuki ISOZAKI , Norio TAKAMI
Abstract: A battery module according to one embodiment includes a first battery unit including a first nonaqueous electrolyte battery, and a second battery unit electrically connected in series to the first battery unit and including a second nonaqueous electrolyte battery. Each of the first and second nonaqueous electrolyte batteries includes a negative electrode including a spinel-type lithium titanate. The first nonaqueous electrolyte battery includes a positive electrode including at least one olivine-type lithium phosphate. The second nonaqueous electrolyte battery includes a positive electrode including at least one lithium-containing composite oxide. The discharge capacity ratio Ca/Cb between the first battery unit and the second battery unit satisfy 1.5
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10.发明申请公开(公告)号：US20170237068A1
公开(公告)日：2017-08-17
申请号：US15584759
申请日：2017-05-02
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Hiroki INAGAKI , Wen ZHANG , Yasuhiro HARADA , Keigo HOSHINA , Yuki OTANI , Norio TAKAMI
IPC: H01M4/485 , C01G23/04 , H01M10/0525 , H01M10/0565 , H01M4/62 , C01G23/00 , H01M10/056
CPC classification number: H01M4/485 , B60L50/16 , B60L50/61 , B60L50/66 , B60L58/27 , B60L2260/28 , C01G23/002 , C01G23/003 , C01G23/005 , C01G23/04 , C01G53/50 , C01P2002/72 , C01P2004/03 , C01P2004/61 , C01P2004/62 , C01P2006/40 , H01M2/0287 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/625 , H01M10/052 , H01M10/0525 , H01M10/056 , H01M10/0565 , H01M10/425 , H01M2004/021 , H01M2004/027 , H01M2220/20 , Y02E60/122 , Y02T10/6217 , Y02T10/7005 , Y02T10/7055 , Y02T10/7077
Abstract: According to one embodiment, there is provided an active material for a battery. The active material includes secondary particle which contains primary particles of a monoclinic β-type titanium composite oxide having an average primary particle diameter of 1 nm to 10 μm. The secondary particle has an average secondary particle diameter of 1 μm to 100 μm. The secondary particle has compression fracture strength of 20 MPa or more.
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