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公开(公告)号：US11456462B2
公开(公告)日：2022-09-27
申请号：US16787232
申请日：2020-02-11
发明人： Tomoko Sugizaki , Tetsuya Sasakawa , Kazuomi Yoshima , Tomoe Kusama , Yasuhiro Harada , Norio Takami
IPC分类号： H01M4/66 , H01M10/0525 , H01M4/525 , H01M4/505 , H01M4/02
摘要： According to one embodiment, an electrode is provided. The electrode includes a current collector, a first layer formed on the current collector, and a second layer formed on at least part of the first layer. The first layer contains a monoclinic niobium titanium composite oxide. The second layer contains lithium titanate having a spinel structure. A porosity P2 of the second layer is within a range from 30% to 80%.
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公开(公告)号：US11430985B2
公开(公告)日：2022-08-30
申请号：US16566308
申请日：2019-09-10
发明人： Keigo Hoshina , Kazuomi Yoshima , Tomoko Sugizaki , Tomoe Kusama , Tetsuya Sasakawa , Yasuhiro Harada , Norio Takami
摘要： According to one embodiment, an electrode is provided. A length of a first active material portion along a first direction is within a range of 0.7T or more and 0.95T or less with respect to a thickness T of an active material-containing layer. The first direction is parallel to a thickness direction. A second active material portion further contains solid electrolyte particles. A ratio E1/E2 is 0 or more and 0.01 or less. The ratio E1/E2 represents a ratio of a content E1 of the solid electrolyte particles per unit area in the first active material portion (including 0) to a content E2 of the solid electrolyte particles per unit area in the second active material portion.
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公开(公告)号：US11251414B2
公开(公告)日：2022-02-15
申请号：US15913021
申请日：2018-03-06
发明人： Norio Takami , Kazuomi Yoshima , Takuya Iwasaki , Tomoko Sugizaki , Tomoe Kusama , Yasuhiro Harada
IPC分类号： H01M4/131 , H01M50/429 , H01M50/44 , H01M50/446 , H01M50/46 , H01M10/0525 , H01M50/449 , H01M10/44 , H01M4/485 , H01M4/02 , H01M10/056
摘要： According to one embodiment, an electrode group includes a positive electrode active material-containing layer, a negative electrode active material-containing layer, a lithium ion conductive layer, and a porous layer. The lithium ion conductive layer includes lithium-containing inorganic particles. The lithium ion conductive layer covers at least part of the positive electrode active material-containing layer. The porous layer covers at least part of the negative electrode active material-containing layer. The positive electrode active material-containing layer and the negative electrode active material-containing layer face each other via the lithium ion conductive layer and the porous layer.
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公开(公告)号：US20210083298A1
公开(公告)日：2021-03-18
申请号：US16787232
申请日：2020-02-11
发明人： Tomoko Sugizaki , Tetsuya Sasakawa , Kazuomi Yoshima , Tomoe Kusama , Yasuhiro Harada , Norio Takami
IPC分类号： H01M4/66 , H01M10/0525 , H01M4/505 , H01M4/525
摘要： According to one embodiment, an electrode is provided. The electrode includes a current collector, a first layer formed on the current collector, and a second layer formed on at least part of the first layer. The first layer contains a monoclinic niobium titanium composite oxide. The second layer contains lithium titanate having a spinel structure. A porosity P2 of the second layer is within a range from 30% to 80%.
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公开(公告)号：US10707523B2
公开(公告)日：2020-07-07
申请号：US15455346
申请日：2017-03-10
发明人： Yasuhiro Harada , Tomoe Kusama , Norio Takami , Kazuomi Yoshima
IPC分类号： H01M10/0562 , H01M10/0525 , H01M4/485 , C01B25/45
摘要： According to one embodiment, there is provided a solid electrolyte including an oxide represented by General Formula Li1+2xM12−x(Ca1−yM2y)x(PO4)3. In the General Formula above, M1 is at least one selected from the group consisting of Zr and Hf. M2 is at least one selected from the group consisting of Sr and Ba. x satisfies 0
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公开(公告)号：US12074340B2
公开(公告)日：2024-08-27
申请号：US17179480
申请日：2021-02-19
IPC分类号： H01M50/46 , H01M4/485 , H01M4/62 , H01M10/0525 , H01M10/0565 , H01M10/42
CPC分类号： H01M50/46 , H01M4/485 , H01M4/62 , H01M10/0525 , H01M10/0565 , H01M10/425 , H01M2010/4271 , H01M2220/20 , H01M2300/0082 , H01M2300/0085
摘要： According to one embodiment, an electrode group is provided. The electrode group includes a positive electrode, a negative electrode, and a gel polymer layer interposed between the positive electrode and the negative electrode. At least a part of the negative electrode is opposed to the positive electrode. The gel polymer layer is formed of a gel electrolyte composed of a polymer material, an organic solvent and a lithium salt, and a sheet base member which supports the gel electrolyte, or the gel polymer layer is formed of only the gel electrolyte.
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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：US11050048B2
公开(公告)日：2021-06-29
申请号：US15913336
申请日：2018-03-06
发明人： Tomoe Kusama , Yasuhiro Harada , Kazuomi Yoshima , Norio Takami
IPC分类号： H01M4/131 , H01M50/44 , H01M50/46 , H01M50/449 , H01M50/411 , H01M10/0525 , H01M10/44 , H01M4/02
摘要： According to one embodiment, an electrode structure is provided. The electrode structure includes an electrode and a separator. The electrode includes an active material-containing layer. The active material-containing layer contains active material particles. The separator includes a layer of organic fibers and inorganic solid particles. The layer of organic fibers is on the active material containing layer. The inorganic solid particles are on the layer of organic fibers. The inorganic solid particles are disposed so as to be biased to a surface side opposite to an electrode side of the separator.
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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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