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公开(公告)号：US20240258514A1
公开(公告)日：2024-08-01
申请号：US18635098
申请日：2024-04-15
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takayuki UCHIYAMA , Shizuka MASUOKA , Tetsuya WASEDA
IPC: H01M4/38 , C01B33/021 , H01M4/02
CPC classification number: H01M4/386 , C01B33/021 , C01P2002/72 , C01P2002/74 , C01P2006/40 , H01M2004/021 , H01M2004/027 , H01M2220/20
Abstract: A main object of the present disclosure is to provide a method for producing an active material wherein a volume variation due to charge/discharge is reduced. The present disclosure achieves the object by providing a method for producing an active material, the method comprising steps of: a preparing step of preparing a LiSi precursor including a Si element and a Li element, and a void forming step of forming a void by extracting the Li element from the LiSi precursor by using a Li extracting solvent, and the LiSi precursor includes a crystal phase of Li22Si5.
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公开(公告)号：US20250140870A1
公开(公告)日：2025-05-01
申请号：US18910297
申请日：2024-10-09
Inventor： Hideaki NISHIMURA , Fuminori MIZUNO , Tetsuya WASEDA , Masatsugu KAWAKAMI , Takuya MATSUYAMA , Kento MASUMURA , Tomotaka SUZUKI , Tsuneyuki YOKOCHI , Yukihiro NAKABAYASHI , Katsuhiko MAKINO , Masaki KAGA , Tomoyuki TAKEMOTO
Abstract: A main object of the present disclosure is to provide a battery of which degrade in discharge properties caused by an anode current collector (Al current collector) is inhibited. The present disclosure achieves the object by providing a battery including a cathode, an anode, and an electrolyte layer arranged between the cathode and the anode, wherein the anode includes an anode current collector that is an Al current collector, and an anode active material layer containing an anode active material of which reaction potential is lower than that of Al; and the anode current collector is covered with a resin coating layer containing a resin and a conductive material, and further, an intermediate layer containing the resin and the anode active material is arranged between the resin coating layer and the anode active material layer.
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公开(公告)号：US20200020929A1
公开(公告)日：2020-01-16
申请号：US16504210
申请日：2019-07-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Jun YOSHIDA , Daichi KOSAKA , Takamasa OTOMO , Tetsuya WASEDA , Hideyuki NAKANO
IPC: H01M4/134 , H01M10/0525 , H01M10/0562 , H01M10/44 , H01M4/131 , H01M4/38 , H01M4/62 , H01M4/1395
Abstract: 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：US20240413657A1
公开(公告)日：2024-12-12
申请号：US18405187
申请日：2024-01-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Mitsutoshi OTAKI , Shinji NAKANISHI , Tetsuya WASEDA , Jun YOSHIDA , Tsubasa MIGITA , Yoshihiro UCHIDA
Abstract: A regeneration method of an all-solid-state battery includes a step of preparing an all-solid-state battery having a cathode that does not contain copper, and a step of executing overdischarge control of the all-solid-state battery. The overdischarge control is control of mitigating reaction variance that is variance in electrode reaction due to charging and discharging of the all-solid-state battery, by discharging the all-solid-state battery until a potential of the cathode becomes lower than an elution potential of copper.
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公开(公告)号：US20240194939A1
公开(公告)日：2024-06-13
申请号：US18411668
申请日：2024-01-12
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tetsuya WASEDA
IPC: H01M10/0562 , B32B27/08 , H01M4/02 , H01M4/131 , H01M4/134 , H01M4/38 , H01M4/505 , H01M4/62 , H01M10/0525 , H01M10/0585 , H01M50/121 , H01M50/186 , H01M50/193
CPC classification number: H01M10/0562 , B32B27/08 , H01M4/131 , H01M4/134 , H01M4/386 , H01M4/387 , H01M4/505 , H01M4/621 , H01M10/0525 , H01M10/0585 , H01M50/121 , H01M50/186 , H01M50/193 , H01M2004/027 , H01M2004/028 , H01M2220/20
Abstract: An all-solid-state battery, including an all-solid-state battery laminate including at least one all-solid-state unit cell in which a positive electrode current collector layer, a positive electrode active material layer, a solid electrolyte layer, a negative electrode active material layer, and a negative electrode current collector layer are laminated in this order, and a resin layer covering a side surface of the all-solid-state battery laminate. At least one surface of at least one of the positive electrode current collector layer and the negative electrode current collector layer includes a laminated part and an extending part. The laminated part is a portion which overlaps another adjacent layer, and the extending part is a portion which extends beyond the other adjacent layer. The surface roughness of the extending part is greater than the surface roughness of the laminated part.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240038971A1
公开(公告)日：2024-02-01
申请号：US18313455
申请日：2023-05-08
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Takayuki UCHIYAMA , Jun YOSHIDA , Tetsuya WASEDA
IPC: H01M4/36 , H01M4/62 , H01M4/1395 , H01M4/04
CPC classification number: H01M4/366 , H01M4/621 , H01M4/1395 , H01M4/043 , H01M2004/027
Abstract: The secondary battery negative electrode of the present disclosure includes an active material layer, the active material layer includes a sulfide solid electrolyte and composite particles as an active material, the composite particles include a plurality of porous silicon particles and a binder, and the active material layer has a porosity of more than 15%.
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公开(公告)号：US20200287204A1
公开(公告)日：2020-09-10
申请号：US16804893
申请日：2020-02-28
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Hiroyuki KAWAURA , Yasuhito KONDO , Yoshinari MAKIMURA , Tetsuya WASEDA , Masaki ADACHI , Jun YOSHIDA , Hiroyuki YAMAGUCHI
Abstract: A negative electrode active substance material used for an electricity storage device of the present disclosure includes a silicon phase and a silicide phase represented by a basic composition formula MSi2, where M is one or more of Cr, Ti, Zr, Nb, Mo, and Hf. The negative electrode active substance material may have a structure in which the silicide phase is dispersed in the silicon phase.
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公开(公告)号：US20170141386A1
公开(公告)日：2017-05-18
申请号：US15346152
申请日：2016-11-08
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tetsuya WASEDA , Takeshi ABE , Yoshitomo TAKEBAYASHI
IPC: H01M4/36 , H01M10/058 , H01M4/62 , H01M4/04 , H01M10/0525 , H01M4/587
CPC classification number: H01M4/366 , C23C16/40 , C23C16/409 , C23C16/45525 , H01M4/0428 , H01M4/485 , H01M4/587 , H01M4/62 , H01M4/625 , H01M10/0525 , H01M10/058 , H01M2004/027 , H01M2220/20 , Y02E60/122
Abstract: The present teaching provides a nonaqueous electrolytic solution secondary battery in which both a satisfactory high-rate characteristic and a high cycle characteristic (prevention of decrease in capacity) are realized. The nonaqueous electrolytic solution secondary battery of the present teaching includes a positive electrode provided with a positive electrode active material layer, a negative electrode provided with a negative electrode active material layer, and a nonaqueous electrolytic solution. The negative electrode active material layer includes a negative electrode active material and carbon black. A coating film made of a lithium transition metal composite oxide having lithium ion conductivity is formed on at least part of a surface of the carbon black.
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公开(公告)号：US20240356133A1
公开(公告)日：2024-10-24
申请号：US18423697
申请日：2024-01-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Mitsutoshi OTAKI , Shinji NAKANISHI , Tetsuya WASEDA , Jun YOSHIDA , Tsubasa MIGITA , Yoshihiro UCHIDA
IPC: H01M50/242 , H01M50/209
CPC classification number: H01M50/242 , H01M50/209
Abstract: The control device executes a process including a step of acquiring a detection value from each surface pressure sensor when charging is in progress, a step of specifying a corresponding partially pressing unit when it is determined that there is a portion where the reaction is uneven, a step of outputting a pressing command, a step of determining whether or not pressing is completed, and a step of outputting a pressing cancel command when it is determined that pressing is completed.
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公开(公告)号：US20210384499A1
公开(公告)日：2021-12-09
申请号：US17333632
申请日：2021-05-28
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tetsuya WASEDA , Jun YOSHIDA , Hiroyuki KAWAURA , Yasuhito KONDO , Ryo SUZUKI , Hiroyuki NAKANO , Nobuhiro OGIHARA
Abstract: A main object of the present disclosure is to provide a method for producing an active material with a high productivity. The present disclosure achieves the object by providing a method for producing an active material, the method comprising steps of: a preparing step of preparing a dope solution including a metal ion that is an ion of a metal element M, and an aromatic hydrocarbon compound in a reduced condition, a precursor alloy producing step of producing a precursor alloy by doping the metal element M included in the dope solution to a Si raw material including a Si element, and a void forming step of forming a void by extracting the metal element M from the precursor alloy using an extracting agent.
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