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公开(公告)号：US11600817B2
公开(公告)日：2023-03-07
申请号：US17002408
申请日：2020-08-25
IPC分类号： H01M4/38 , H01M10/0525 , H01M10/058 , C01B33/037 , C22C24/00 , H01M4/02
摘要： Provided is a novel production method for producing silicon clathrate II. In the production method for producing silicon clathrate II, in a reaction system in which a Na—Si alloy containing Na and Si and an Na getter agent coexist so as not to be in contact with each other, the Na—Si alloy is heated and Na evaporated from the Na—Si alloy is thus caused to react with the Na getter agent to reduce an amount of Na in the Na—Si alloy.
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公开(公告)号：US11569502B2
公开(公告)日：2023-01-31
申请号：US16195279
申请日：2018-11-19
发明人： Daichi Kosaka , Jun Yoshida
IPC分类号： H01M4/505 , H01M10/0585 , H01M4/36 , H01M10/0562 , H01M4/62 , H01M4/1391 , H01M4/04 , H01M4/525 , H01M10/052 , H01M10/42 , H01M4/02
摘要： When a layered rock-salt type cathode active material and a sulfide solid electrolyte are mixed to be a cathode mixture, and an all solid-state battery is obtained using this mixture, oxygen is released from the cathode active material when the battery is charged, and the sulfide solid electrolyte is oxidized, increasing the battery internal resistance. To increase the concentration of cobalt inside the active material, and at the same time to lower the concentration of cobalt of the surface of the cathode active material, to suppress oxygen release in charging, specifically, a cathode mixture includes: a cathode active material; and a sulfide solid electrolyte, wherein the cathode active material has a layered rock-salt crystal phase, and is made of a composite oxide containing Li, Ni, Co, and Mn, and the concentration of cobalt inside the cathode active material is higher than that of a surface of the cathode active material.
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公开(公告)号：US09786946B2
公开(公告)日：2017-10-10
申请号：US14661541
申请日：2015-03-18
发明人： Tomoharu Sasaoka , Norihiro Ose , Hajime Hasegawa , Kazuhito Kato , Kengo Haga , Daichi Kosaka
IPC分类号： H01M10/04 , H01M2/10 , H01M10/052 , H01M10/0562 , H01M10/0585
CPC分类号： H01M10/0413 , H01M2/1077 , H01M10/0468 , H01M10/052 , H01M10/0562 , H01M10/0585 , H01M2220/20 , H01M2300/0065 , Y02E60/122 , Y02P70/54 , Y10T29/49108
摘要： A solid-state battery comprising a stack including at least one unit cell including a positive electrode layer including a positive electrode active material, a negative electrode layer including a negative electrode active material, and a solid electrolyte layer laminated between the positive and negative electrode layers, and an outer covering accommodating the stack, wherein the solid-state battery further including a pressure receiving member provided on at least a part of a periphery of the outer covering, and wherein the pressure receiving member has a thickness of less than a total thickness of the stack and the outer covering in a stacking direction of the unit cell.
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公开(公告)号：US11296315B2
公开(公告)日：2022-04-05
申请号：US16504616
申请日：2019-07-08
发明人： Jun Yoshida , Daichi Kosaka , Takamasa Otomo , Hideyuki Nakano
IPC分类号： H01M4/36 , H01M10/0525 , H01M10/054 , H01M10/0565 , H01M10/0566
摘要： A main object of the present disclosure is to provide a battery with excellent capacity. The present disclosure achieves the object by providing a battery comprising a cathode layer, an electrolyte layer, and an anode layer, in this order, and the anode layer includes a silicon clathrate compound, as an anode active material, the silicon clathrate compound has a composition represented by MxSi46, wherein M is a metal element, x satisfies 0
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公开(公告)号：US11075372B2
公开(公告)日：2021-07-27
申请号：US16504210
申请日：2019-07-05
发明人： Jun Yoshida , Daichi Kosaka , Takamasa Otomo , Tetsuya Waseda , Hideyuki Nakano
IPC分类号： H01M4/00 , H01M4/134 , H01M4/131 , H01M4/1395 , H01M4/38 , H01M4/62 , H01M10/0525 , H01M10/0562 , H01M10/44
摘要： A main object of the present disclosure is to provide a novel active material whose volume variation due to charge/discharge is small. The present disclosure achieves the object by providing an active material having a composition represented by NaxMySi46, wherein M is a metal element other than Na, x and y satisfy 0
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公开(公告)号：US09882234B2
公开(公告)日：2018-01-30
申请号：US15178250
申请日：2016-06-09
发明人： Daichi Kosaka , Norihiro Ose , Kengo Haga , Tomoya Suzuki , Hajime Hasegawa , Keisuke Omori
IPC分类号： H01M10/04 , H01M10/0525 , H01M10/0562
CPC分类号： H01M10/0468 , H01M10/04 , H01M10/0525 , H01M10/0562 , H01M2220/20 , Y02E60/122 , Y02P70/54
摘要： An all-solid battery having stacked therein, in order, a positive electrode laminate, an intermediate solid electrolyte layer, and a negative electrode laminate is manufactured by a first pressing step (i) of applying pressure to the positive electrode laminate, a second pressing step (ii) of applying pressure to the negative electrode laminate, and a third pressing step (iii) of applying pressure to the positive electrode laminate, the intermediate solid electrolyte layer, and the negative electrode laminate.
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公开(公告)号：US11721805B2
公开(公告)日：2023-08-08
申请号：US17002304
申请日：2020-08-25
发明人： Masanori Harata , Tatsuya Eguchi , Masakazu Murase , Jun Yoshida , Kazuhiro Suzuki , Daichi Kosaka , Shinji Nakanishi
CPC分类号： H01M4/386 , C01B33/02 , C22C24/00 , H01B1/04 , H01M4/381 , H01M10/0525 , C01P2002/54 , C01P2002/72 , C01P2006/14 , C01P2006/16 , C01P2006/40 , H01M2004/027
摘要： Provided is a negative electrode active material that contains silicon clathrate II and that is suitable for a negative electrode of a lithium ion secondary battery. The negative electrode active material includes a silicon material in which silicon clathrate II represented by composition formula NaxSi136 (0≤x≤10) is contained and a volume of a pore having a diameter of not greater than 100 nm is not less than 0.025 cm3/g.
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公开(公告)号：US11527750B2
公开(公告)日：2022-12-13
申请号：US16667982
申请日：2019-10-30
发明人： Daichi Kosaka , Jun Yoshida , Tetsuya Waseda , Takamasa Otomo
IPC分类号： H01M4/38 , H01M10/0525 , H01M4/1395 , C01B33/06 , H01M4/02
摘要： A main object of the present disclosure is to provide an active material whose volume variation due to charge and discharge is small. The present disclosure achieves the object by providing an active material comprising a primary particle including at least one crystal phase of a Type I silicon clathrate and a Type II silicon clathrate, and the primary particle includes a void inside thereof.
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公开(公告)号：US11088367B2
公开(公告)日：2021-08-10
申请号：US16594094
申请日：2019-10-07
发明人： Daichi Kosaka , Jun Yoshida , Tetsuya Waseda , Takamasa Otomo
IPC分类号： H01M4/00 , H01M4/58 , C01B33/06 , H01M10/054 , H01M10/0585 , H01M4/02
摘要： A main object of the present disclosure is to provide a novel active material of which volume change due to charge and discharge is small. The present disclosure achieves the object by providing a method for producing an active material having a composition represented by NaxMySi46 (M is a metal element other than Na, x and y satisfy 0
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公开(公告)号：US10297874B2
公开(公告)日：2019-05-21
申请号：US15264726
申请日：2016-09-14
发明人： Keisuke Omori , Hajime Hasegawa , Kengo Haga , Mitsutoshi Otaki , Norihiro Ose , Daichi Kosaka , Masato Hozumi
IPC分类号： H01M10/44 , H01M10/0525 , H01M4/38 , H01M10/0562 , H01M10/0585
摘要： A method of manufacturing an all-solid-state battery includes a lamination step of laminating a deactivated lithium-containing negative electrode active material layer containing deactivated lithium, a solid electrolyte layer for the all-solid-state battery, and a positive electrode active material layer for the all-solid-state battery such that the solid electrolyte layer for the all-solid-state battery is disposed between the deactivated lithium-containing negative electrode active material layer and the positive electrode active material layer for the all-solid-state battery.
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