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公开(公告)号：US11894553B2
公开(公告)日：2024-02-06
申请号：US17186819
申请日：2021-02-26
发明人： Kakuya Ueda , Yasunobu Yamashita , Keigo Hoshina , Tetsuya Sasakawa , Yasuhiro Harada , Norio Takami , Shinsuke Matsuno
CPC分类号： H01M4/485 , H01M4/131 , H01M4/133 , H01M10/425 , H01M2004/021 , H01M2004/027 , H01M2004/028 , H01M2220/20
摘要： According to one embodiment, an electrode is provided. The electrode includes a current collector, and an active material-containing layer which is formed on a surface of the current collector and includes a plurality of niobium titanium composite oxide particles. A X-ray diffraction pattern using a Cu-Kα ray source with respect to a surface of the active material-containing layer includes a peak A with a highest intensity in a range of 2θ=26°±0.2° and a peak B with a highest intensity in a range of 2θ=23.9°±0.2°. An intensity ratio (Ia/Ib) between an intensity Ia of the peak A and an intensity Ib of the peak B is in a range of 1.80 or more to 2.60 or less.
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公开(公告)号：US20230299287A1
公开(公告)日：2023-09-21
申请号：US17823818
申请日：2022-08-31
IPC分类号： H01M4/583 , H01M10/0525 , H01M4/36 , H01M4/525 , H01M4/505
CPC分类号： H01M4/583 , H01M10/0525 , H01M4/366 , H01M4/525 , H01M4/505 , H01M2220/20 , H01M2004/021
摘要： According to one embodiment, provided is an electrode including an active material-containing layer that includes an active material, inorganic solid particles having lithium ion conductivity, and a carbon material. The active material-containing layer has a first peak corresponding to a maximum log differential intrusion in a log differential intrusion distribution curve according to mercury porosimetry. A pore size diameter D1 at the first peak is 0.05 μm to 10 μm. A first pore volume corresponding to the first peak is 20% to 50% with respect to a total pore volume within the active material-containing layer. A ratio of a second pore volume in a range of 0.005 μm to 0.02 μm relative to the first pore volume is 0.1% to 5%.
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公开(公告)号：US11631845B2
公开(公告)日：2023-04-18
申请号：US17186707
申请日：2021-02-26
IPC分类号： H01M4/36 , H01M4/66 , H01M10/0565 , H01M10/42 , H01M4/02
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：US11462730B2
公开(公告)日：2022-10-04
申请号：US16804425
申请日：2020-02-28
发明人： Tomoe Kusama , Tetsuya Sasakawa , Kazuomi Yoshima , Tomoko Sugizaki , Wen Zhang , Yasuhiro Harada , Norio Takami
摘要： According to one embodiment, an electrode is provided. The active material-containing layer includes an active material, inorganic solid particles having lithium ion conductivity, and carbon fiber. A pore diameter DM at the first peak is 0.05 μm to 10 μm. A value SA−SB is 1.4 or more in a slope distribution curve of the active material-containing layer, where a vertical axis of the slope distribution curve represents a slope of a straight line passing through two adjacent measurement points on the log differential pore volume distribution curve and a horizontal axis of the slope distribution curve represents a smaller pore diameter of the two adjacent measurement points. The value SA−SB is obtained by subtracting a minimum slope value SB from a maximum slope value SA.
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公开(公告)号：US20200295363A1
公开(公告)日：2020-09-17
申请号：US16559260
申请日：2019-09-03
发明人： Tetsuya Sasakawa , Yasuhiro Harada , Norio Takami
IPC分类号： H01M4/505 , H01M4/525 , H01M4/131 , H01M10/0525 , H01M10/42 , H01M2/10 , B60L50/64 , B60L7/10
摘要： According to one embodiment, there is provided an active material represented by a general formula Lix(NiaCobMncMd)1−s(Nb1−tTat)sO2. Here, M is at least one selected from the group consisting of Li, Ca, Mg, Al, Ti, V, Cr, Zr, Mo, Hf, and W, and 1.0≤x≤1.3, 0≤a≤0.9, 0≤b≤1.0, 0≤c≤0.8, 0≤d≤0.5, a+b+c+d=1, 0.005≤s≤0.3, and 0.0005≤t≤0.1 are satisfied.
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公开(公告)号：US20200044247A1
公开(公告)日：2020-02-06
申请号：US16520666
申请日：2019-07-24
发明人： Tetsuya Sasakawa , Wen Zhang , Yasuhiro Harada , Norio Takami
摘要： An electrode comprises a current collector; and an active material-containing layer has active materials which comprise titanium-containing composite oxide having an orthorhombic crystal structure and represented by a general formula Li2+aM12−bTi6−cM2dO14+δ; wherein the active material-containing layer has intensity ratio Ia/Ib in an X-ray diffraction pattern of the active material-containing layer, the Ia and the Ib are obtained by powder X-ray diffraction method using Cu-Kα ray, the intensity ratio is within a range of 0.05≤Ia/Ib
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公开(公告)号：US09543614B2
公开(公告)日：2017-01-10
申请号：US14659804
申请日：2015-03-17
IPC分类号： H01M10/052 , H01M10/0525 , H01M10/42 , H01M4/485 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/36 , H01M4/02 , H01M2/10
CPC分类号： H01M10/0525 , H01M2/1077 , H01M4/131 , H01M4/364 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/4257 , H01M2004/027 , H01M2004/028 , H01M2010/4271 , Y02E60/122 , Y02T10/7011
摘要： According to one embodiment, a nonaqueous electrolyte battery includes a container, a positive electrode housed in the container, a negative electrode housed in the container, and a nonaqueous electrolyte housed in the container. The positive electrode includes a positive electrode active material represented by a general formula LiMO2 (M is one or more elements selected from a group consisting of Ni, Co, and Mn). The negative electrode is spatially separated from the positive electrode and includes a titanium-containing oxide as a negative electrode active material. A potential of the positive electrode is 3.75 V or more vs. Li/Li+, when an open circuit voltage of a nonaqueous electrolyte battery is 2.17 V.
摘要翻译： 根据一个实施方案，非水电解质电池包括容器，容纳在容器中的正极，容纳在容器中的负极和容纳在容器中的非水电解质。 正极包括由通式LiMO2表示的正极活性物质（M是选自Ni，Co和Mn中的一种以上的元素）。 负极与正极空间分离，含有含钛氧化物作为负极活性物质。 当非水电解质电池的开路电压为2.17V时，正极的电位相对于Li / Li +为3.75V以上。
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公开(公告)号：US12107209B2
公开(公告)日：2024-10-01
申请号：US17462507
申请日：2021-08-31
IPC分类号： H01M10/0525 , B60L50/64 , H01M4/131 , H01M4/485 , H01M4/62 , H01M10/058 , H01M50/249 , H01M4/02
CPC分类号： H01M10/0525 , B60L50/64 , H01M4/131 , H01M4/485 , H01M4/62 , H01M10/058 , H01M50/249 , H01M2004/027 , H01M2220/20
摘要： According to an embodiment, an electrode group is provided. The electrode group includes a positive electrode, and a negative electrode. The negative electrode active material-containing layer includes a facing section which faces the positive electrode active material-containing layer and a non-facing section which does not. A first fluorine-containing coating is formed on a main surface of the negative electrode active material-containing layer in at least a part of the non-facing section. The abundance ratio of fluorine atoms included in the first fluorine-containing coating is in the range of 2.5 atom % to 10 atom %.
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公开(公告)号：US11888121B2
公开(公告)日：2024-01-30
申请号：US17462410
申请日：2021-08-31
IPC分类号： H01M10/0569 , H01M4/485 , H01M10/42 , H01M4/58 , H01M10/056 , H01M50/414 , H01M50/434 , H01M50/44 , H01M50/46
CPC分类号： H01M10/0569 , H01M4/485 , H01M4/5825 , H01M10/056 , H01M10/425 , H01M50/414 , H01M50/434 , H01M50/44 , H01M50/46 , H01M2220/20 , H01M2300/0037 , H01M2300/0051
摘要： According to one embodiment, a secondary battery includes a positive electrode, a negative electrode, a separator layer, and a nonaqueous electrolytic solution. The separator layer includes a first porous layer containing a solid electrolyte and a second porous layer containing fibers. The second porous layer is in contact with a first surface of the first porous layer. The nonaqueous electrolytic solution includes a first solvent including at least one of methyl propionate and ethyl propionate, and a second solvent different from the first solvent. The first porous layer has a void fraction of 10% by volume or greater and 50% by volume or less. The second porous layer has a void fraction greater than the void fraction of the first porous layer.
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公开(公告)号：US11456449B2
公开(公告)日：2022-09-27
申请号：US16523052
申请日：2019-07-26
发明人： Tetsuya Sasakawa , Wen Zhang , Yasuhiro Harada , Norio Takami
IPC分类号： H01M4/131 , H01M10/052 , H01M4/02
摘要： An electrode for a secondary battery comprises a current collector; and an active material-containing layer has active materials which comprise titanium-containing composite oxide having an orthorhombic crystal structure and represented by a general formula Li2+aM12−bTi6−cM2dO14+δ;
wherein the active material-containing layer has intensity ratio Ia/Ib in an X-ray diffraction pattern of the active material-containing layer, the Ia and the Ib are obtained by powder X-ray diffraction method using Cu-Kα ray, the intensity ratio is within a range of 0.5≤Ia/Ib≤2, the Ia is the strongest intensity of a diffraction peak among diffraction peaks appearing within a range of 42°≤2θ≤44°, and the Ib is the strongest intensity of a diffraction peak among diffraction peaks appearing within a range of 44°
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