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公开(公告)号：US20240097274A1
公开(公告)日：2024-03-21
申请号：US18176224
申请日：2023-02-28
IPC分类号： H01M50/431 , H01M4/48 , H01M10/42
CPC分类号： H01M50/431 , H01M4/483 , H01M10/425 , H01M2004/027
摘要： In general, according to one embodiment, a nonaqueous electrolyte battery is provided. The nonaqueous electrolyte battery includes an electrode group, including a positive electrode, a negative electrode, and a separator. The separator includes at least one metal-element containing portion containing a metal element. The at least one metal-element containing portion is provided on a surface of the separator in contact with the negative electrode. The at least one metal-element containing portion contains at least one selected from a group consisting of a metal, a metallic oxide, and a metallic fluoride. An area of the at least one metal-element containing portion is in a range of 0.3 mm2 to 3.2 mm2.
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公开(公告)号：US20220352542A1
公开(公告)日：2022-11-03
申请号：US17650432
申请日：2022-02-09
发明人： Yuiko KOITABASHI , Taro FUKAYA , Yasuhiro HARADA , Norio TAKAMI
IPC分类号： H01M10/0525 , H01M4/485 , H01M4/525 , H01M10/44 , H01M10/0562
摘要： According to one embodiment, a method of producing a secondary battery includes preparing a battery architecture, which includes a positive electrode, a negative electrode, and an electrolyte, providing a potential adjusted state by adjusting a positive electrode potential to 4.3 V to 4.8 V and a negative electrode potential to 0.5 V to 1.1 V based on oxidation-reduction potential of lithium, and holding the battery architecture in the potential adjusted state. The positive electrode includes a nickel-containing oxide represented by a general formula LixM1O2. M1 is a metal element including at least Ni in an elemental ratio of 50% or more, and 0
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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
发明人： Tomoko SUGIZAKI , Tomoe KUSAMA , Yuta KANAI , Keigo HOSHINA , Tetsuya SASAKAWA , Ryosuke YAGI , Yasuhiro HARADA , Norio TAKAMI
摘要： 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：US20220085357A1
公开(公告)日：2022-03-17
申请号：US17186707
申请日：2021-02-26
IPC分类号： H01M4/36 , H01M10/0565 , H01M10/42 , H01M4/66
摘要： According to one embodiment, a secondary battery includes a positive electrode including first vacancies, a negative electrode including second vacancies, and an electrolyte. The electrolyte includes a gel polymer portion and a liquid portion, and the gel polymer portion has a gel-part ratio within a range of from 20% to 80%. At least a part of the electrolyte is held in the first vacancies and the second vacancies. A first ratio r1 of the liquid portion to the gel polymer portion in the first vacancies is within a range of 0.01≤r1≤10. A second ratio r2 of the liquid portion to the gel polymer portion in the second vacancies is within a range of 0.01≤r2≤10.
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公开(公告)号：US20210296635A1
公开(公告)日：2021-09-23
申请号：US17007625
申请日：2020-08-31
发明人： Kazuomi YOSHIMA , Yasuhiro HARADA , Norio TAKAMI
摘要： According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer including active material particles containing a niobium-titanium composite oxide and a nitrogen atom-containing binder. The spectral data obtained by performing X-ray photoelectron spectroscopy measurement on a surface of the active material-containing layer includes a first peak existing at 210±5 eV position, a second peak existing at 458±5 eV position, and a third peak existing at 400±5 eV position. In the X-ray photoelectron spectroscopy measurement, an element ratio r1 of a nitrogen atom to a niobium atom and a titanium atom is within the range of 0.2 to 2.
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公开(公告)号：US20210296631A1
公开(公告)日：2021-09-23
申请号：US17007147
申请日：2020-08-31
发明人： Keigo HOSHINA , Wen ZHANG , Tetsuya SASAKAWA , Yasuhiro HARADA , Norio TAKAMI
IPC分类号： H01M4/131 , H01M4/134 , H01M4/583 , H01M2/10 , H01M10/0525
摘要： 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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7.发明申请公开(公告)号：US20210083263A1
公开(公告)日：2021-03-18
申请号：US16802656
申请日：2020-02-27
摘要： According to one embodiment, provided is a composite oxide containing lithium, niobium, and tantalum. A mass ratio of tantalum with respect to niobium is in a range of from 0.01% to 1.0%.
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公开(公告)号：US20190198876A1
公开(公告)日：2019-06-27
申请号：US16289123
申请日：2019-02-28
CPC分类号： H01M4/62 , B60L50/64 , C01G23/003 , H01M2/1077 , H01M2/1626 , H01M4/13 , H01M4/131 , H01M4/366 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/622 , H01M10/0525 , H01M10/425 , H01M10/44 , H01M2004/027 , H01M2004/028 , H01M2010/4271 , H01M2220/20
摘要： According to one embodiment, there is provided an electrode including active material particles, polymer fibers and inorganic solid particles. The polymer fibers have an average fiber diameter of 1 nm to 100 nm.
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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
发明人： Dai YAMAMOTO , Keigo HOSHINA , Ryo HARA , Norio TAKAMI , Yasuhiro HARADA
摘要： 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：US20190088983A1
公开(公告)日：2019-03-21
申请号：US15907808
申请日：2018-02-28
发明人： Yusuke NAMIKI , Yasuhiro HARADA , Norio TAKAMI
摘要： According to one embodiment, a lithium ion secondary battery is provided. The lithium ion secondary battery includes a negative electrode containing a negative electrode active material-containing layer, a positive electrode, and an electrolyte containing Li ions and Na ions. The negative electrode active material-containing layer contains a Na-containing titanium composite oxide. A ratio (WE/WA) of an Na amount WE (g/g) in the electrolyte to an Na amount WA (g/g) in the negative electrode active material-containing layer satisfies Formula (1) below: 1×10−1≤WE/WA≤1×105 (1).
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