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公开(公告)号：US12062787B2
公开(公告)日：2024-08-13
申请号：US17307661
申请日：2021-05-04
发明人： Keitaro Kitada , Futoshi Sato , Takaaki Matsui , Taichi Kogure , Aya Mashiko , Yoshifumi Shimizu , Kazuki Honda , Yuta Hirano , Shinji Hatake , Naoko Yamakawa , Moriaki Okuno , Masahiro Miyamoto
IPC分类号： H01M4/525 , C07D319/06 , C08F214/22 , H01M4/131 , H01M4/133 , H01M4/134 , H01M4/36 , H01M4/38 , H01M4/587 , H01M4/62 , H01M10/0525 , H01M10/0567 , H01M10/0587 , H01M50/414 , H01M50/449 , H01M50/46 , H01M4/02
CPC分类号： H01M4/525 , C07D319/06 , C08F214/22 , H01M4/131 , H01M4/133 , H01M4/134 , H01M4/364 , H01M4/386 , H01M4/587 , H01M4/623 , H01M4/625 , H01M10/0525 , H01M10/0567 , H01M10/0587 , H01M50/414 , H01M50/449 , H01M50/461 , H01M2004/021 , H01M2300/0025
摘要： A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a lithium-cobalt composite oxide having a layered rock-salt crystal structure. The negative electrode includes graphite. An open circuit potential of the negative electrode measured in a full charge state is from 19 mV to 86 mV. A potential variation of the negative electrode is greater than or equal to 1 mV when the secondary battery is discharged from the full charge state by a capacity corresponding to 1% of a maximum discharge capacity. The maximum discharge capacity is obtained when the secondary battery is discharged with a constant current from the full charge state until the closed circuit voltage reaches 3.00 V, following which the secondary battery is discharged with a constant voltage of the closed circuit voltage of 3.00 V for 24 hours.
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2.发明授权公开(公告)号：US12034122B2
公开(公告)日：2024-07-09
申请号：US17096488
申请日：2020-11-12
发明人： Tomomi Sakuma , Masahiro Miyamoto , Raman Kukreja
IPC分类号： H01M50/411 , H01M4/02 , H01M4/485 , H01M4/525 , H01M4/58 , H01M10/0525 , H01M10/0569
CPC分类号： H01M10/0569 , H01M4/485 , H01M4/525 , H01M4/582 , H01M10/0525 , H01M50/411 , H01M2004/027 , H01M2004/028 , H01M2300/0037
摘要： A lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution that includes an alkoxy compound represented by CmX2m+1—O—(CX2)n—OH. Each X represents hydrogen (H) or a halogen, m is an integer of 1 or greater, n is an integer of 1 or greater, and (m+n) is 4 or greater.
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3.发明申请公开(公告)号：US20210066756A1
公开(公告)日：2021-03-04
申请号：US17096488
申请日：2020-11-12
发明人： Tomomi Sakuma , Masahiro Miyamoto , Raman Kukreja
IPC分类号： H01M10/0569 , H01M4/58 , H01M4/525 , H01M4/485 , H01M2/16 , H01M10/0525
摘要： A lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution that includes an alkoxy compound represented by CmX2m+1—O—(CX2)n—OH. Each X represents hydrogen (H) or a halogen, m is an integer of 1 or greater, n is an integer of 1 or greater, and (m+n) is 4 or greater.
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公开(公告)号：US10343527B2
公开(公告)日：2019-07-09
申请号：US15109918
申请日：2015-01-20
IPC分类号： H01M10/058 , B60K6/46 , B60L7/10 , H01M10/0566 , H01M10/0569 , B60L50/64 , H01M4/36 , H01M10/0568
摘要： Between an anode active material layer and a separator, a recess impregnation region of an anode side in which electrolytes and solid particles are disposed and including a recess that is located between adjacent anode active material particles positioned on the outermost surface of the anode active material layer is formed. Between a cathode active material layer and a separator, a recess impregnation region of a cathode side in which electrolytes and solid particles are disposed and including a recess that is located between adjacent cathode active material particles positioned on the outermost surface of the cathode active material layer is formed. The solid particles in the recess impregnation regions of the cathode side and the anode side have a concentration that is 30 volume % or more.
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公开(公告)号：US10707539B2
公开(公告)日：2020-07-07
申请号：US15816588
申请日：2017-11-17
发明人： Akira Yamaguchi , Kunihiko Hayashi , Tadahiko Kubota , Hiroyuki Suzuki , Akira Ichihashi , Yuzuru Fukushima , Hironori Sato , Masaki Kuratsuka , Hideto Watanabe , Kimio Tajima , Masahiro Miyamoto
IPC分类号： H01M10/42 , H01M4/505 , H01M2/02 , H01M2/16 , H01M2/26 , H01M2/30 , H01M2/34 , H01M4/131 , H01M4/133 , H01M4/36 , H01M4/525 , H01M10/0587 , H01M10/0569 , H01M10/0568 , H01M10/0525 , H01M10/052 , H01M4/62 , H01M4/04 , H01M4/1391 , H01M4/1393 , H01M4/02
摘要： A battery is provided including an anode, a cathode and an electrolyte; wherein the electrolyte includes one or both of fluoro ethylene carbonate and difluoro ethylene carbonate in an amount of 0.5% by mass or more and 10% by mass or less, wherein the anode includes an anode active material layer provided on an anode current collector, and wherein a thickness of the anode active material layer, after charging the battery, is 58 um or more and 75 um or less.
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公开(公告)号：US10680286B2
公开(公告)日：2020-06-09
申请号：US15653708
申请日：2017-07-19
IPC分类号： H01M4/02 , H01M10/0569 , H01M4/131 , H01M4/36 , H01M4/525 , H01M10/0525 , H01M10/0567
摘要： A nonaqueous electrolyte battery includes: a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode contains, as a positive electrode active material, a positive electrode material having a surface composition represented by the following formula (I); the nonaqueous electrolyte contains a halogenated carbonate represented by any of the following formulae (1) to (2) and an alkylbenzene represented by the following formula (3); a content of the halogenated carbonate is 0.1% by mass or more and not more than 50% by mass relative to the nonaqueous electrolyte; and a content of the alkylbenzene is 0.1% by mass or more and not more than 5% by mass relative to the nonaqueous electrolyte
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