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公开(公告)号：US12224437B2
公开(公告)日：2025-02-11
申请号：US17668475
申请日：2022-02-10
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Arisa Yamada , Tomoe Kusama , Tomoko Sugizaki , Yuta Kanai , Hirofumi Yasumiishi , Tetsuya Sasakawa , Yasuhiro Harada
IPC: H01M4/525 , H01M4/02 , H01M4/04 , H01M4/131 , H01M4/134 , H01M4/1391 , H01M4/1395 , H01M10/0525
Abstract: According to one embodiment, a method of producing a secondary battery is provided. The method includes preparing a battery architecture including a positive electrode, a negative electrode, and an electrolyte; adjusting a positive electrode potential to a range of 3.4 V to 3.9 V and a negative electrode potential to a range of 1.5 V to 2.0 V based on an oxidation-reduction potential of lithium, thereby providing a potential adjusted state; and holding the battery architecture in the potential adjusted state at a holding temperature of 50° C. to 90° C. The positive electrode includes a lithium-nickel-cobalt-manganese composite oxide. The negative electrode includes a niobium-titanium composite oxide. The electrolyte includes one or more first organic solvent having a viscosity of 1 cP or less.
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公开(公告)号：US12095028B2
公开(公告)日：2024-09-17
申请号：US17007038
申请日：2020-08-31
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Norio Takami , Takashi Kishi , Yasuhiro Harada
IPC: H01M10/0562 , H01M4/38 , H01M4/58 , H01M10/0525 , H01M4/02
CPC classification number: H01M10/0562 , H01M4/382 , H01M4/582 , H01M10/0525 , H01M2004/027 , H01M2004/028 , H01M2220/10 , H01M2220/20 , H01M2300/008
Abstract: According to one embodiment, a secondary battery includes a positive electrode, a negative electrode, a nonaqueous electrolyte and a separator. The positive electrode includes a halide including one or more metal elements selected from the group consisting of copper, iron, nickel, cobalt, tin, and zinc. The negative electrode includes one or more selected from the group consisting of lithium metal, a lithium alloy, and a compound capable of having Li inserted and extracted. The nonaqueous electrolyte contains aluminum ions. The separator has lithium ion conductivity and is interposed between the positive electrode and the negative electrode.
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公开(公告)号：US11495789B2
公开(公告)日：2022-11-08
申请号：US14660052
申请日：2015-03-17
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Katsuyuki Naito , Yasuhiro Harada , Norihiro Yoshinaga , Yoshihiro Akasaka
IPC: H01M4/13 , H01M4/58 , H01M4/62 , H01M4/36 , H01M4/131 , H01M4/133 , H01M4/587 , H01M10/0525 , H01M4/1391 , H01M4/1393 , H01M4/48 , H01M4/02 , H01M4/485
Abstract: According to one embodiment, there is provided a composite. The composite includes active material particles of a titanium composite oxide or oxide of titanium, and a graphene structure including a carbon material. The carbon material has a graphene framework defining a graphene surface. The graphene structure is located in between the active material particles. The graphene structure has at least one side surface in contact with the active material particle. The side surface includes the carbon material whose graphene surface is slanted relative to the side surface.
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公开(公告)号：US11217793B2
公开(公告)日：2022-01-04
申请号：US16804546
申请日：2020-02-28
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yuta Kanai , Tetsuya Sasakawa , Keigo Hoshina , Yasuhiro Harada , Norio Takami
Abstract: According to one embodiment, an electrode is provided. The electrode includes the active material-containing layer formed on the current collector and including active material particles. The particle size distribution chart obtained by the laser diffraction scattering method for the active material particles includes the first region and the second region. The first particle group included in the first region includes the first active material particles, and the second particle group included in the second region includes second active material particles. The carbon coverage of the first particle group is higher than the carbon coverage of the second particle group.
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公开(公告)号：US11201348B2
公开(公告)日：2021-12-14
申请号：US16122767
申请日：2018-09-05
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Kazuomi Yoshima , Wen Zhang , Yasuhiro Harada , Norio Takami
IPC: H01M10/0562 , H01M4/62 , H01M10/0525 , H02J7/00 , H01M4/36 , H01M4/13 , H01M10/42 , H01M4/02 , H01M10/0585
Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer containing active material particles, ferroelectric particles, and solid electrolyte particles. A ratio (FEcontact) of the number of the ferroelectric particles in contact with the active material particles relative to the number of the ferroelectric particles included in the active material-containing layer is 85% or more. A ratio (SEnon-contact) of the number of the solid electrolyte particles not in contact with the active material particles relative to the number of the solid electrolyte particles included in the active material-containing layer is 30% or more.
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Patent Agency Ranking
公开(公告)号：US10957906B2
公开(公告)日：2021-03-23
申请号：US16117941
申请日：2018-08-30
Inventor： Yasuhiro Harada , Norio Takami , Kazuki Ise , Kazuomi Yoshima
IPC: H01M10/0525 , H01M10/42 , H01M4/485 , B60L50/64 , B60L50/60 , H01M10/052 , C01G23/00 , C01G33/00 , H01M4/131 , H01M4/02 , H01M4/36 , H01M4/62
Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer which contains an active material. The active material includes a plurality of primary particles containing a niobium-titanium composite oxide. The average crystallite diameter of the plurality of primary particles is 90 nm or more. The average particle size (D50) of the plurality of primary particles is in a range of 0.1 μm to 5 μm. The average value (FUave) of the roughness shape coefficient (FU) according to Formula (1) below is less than 0.70 in 100 primary particles among the plurality of primary particles. [ Formula 1 ] FU = f f c = 4 π a ℓ 2 ( 1 )
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公开(公告)号：US20210083277A1
公开(公告)日：2021-03-18
申请号：US16802643
申请日：2020-02-27
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yasunobu YAMASHITA , Keigo Hoshina , Yasuhiro Harada , Norio Takami
Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer. The active material-containing layer contains an active material and a flat plate-shaped silicate.
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公开(公告)号：US10944104B2
公开(公告)日：2021-03-09
申请号：US16119493
申请日：2018-08-31
Inventor： Yasuhiro Harada , Norio Takami , Takuya Iwasaki , Kazuki Ise , Kazuomi Yoshima
IPC: H01M4/02 , H01M4/485 , B60L58/10 , H01M10/0525 , H01M10/42 , H01M10/052 , H01M4/131 , H01M4/62 , H01M4/36
Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer which contains an active material. The active material includes a plurality of primary particles containing a niobium-titanium composite oxide. The average value (FUave) of the roughness shape coefficient (FU) according to Formula (1) below is 0.70 or more in 100 primary particles among the plurality of primary particles. [ Formula 1 ] FU = f f c = 4 π a ℓ 2 ( 1 )
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公开(公告)号：US10910648B2
公开(公告)日：2021-02-02
申请号：US16119014
申请日：2018-08-31
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yasuhiro Harada , Norio Takami , Kazuki Ise
Abstract: According to one embodiment, an active material is provided. The active material includes a lithium niobium composite oxide represented by a general formula LixFe1−yM1yNb11−2M2zO29 (1) and having an orthorhombic crystal structure. In the general formula (1), 0≤x≤23, 0≤y≤1 and 0
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60.发明授权公开(公告)号：US10862118B2
公开(公告)日：2020-12-08
申请号：US16117978
申请日：2018-08-30
Inventor： Yasuhiro Harada , Norio Takami , Tetsuya Sasakawa , Yusuke Namiki , Yasunobu Yamashita
IPC: H01M6/42 , H01M4/485 , C01G33/00 , H01M4/36 , H01M10/0525 , H01M2/30 , H01M2/10 , B60L50/64 , H01M4/02
Abstract: An active material includes an Nb2TiO7 phase and at least one Nb-rich phase selected from an Nb10Ti2O29 phase, an Nb14TiO37 phase, and an Nb24TiO64 phase. The active material satisfies a peak intensity ratio represented by the following Formula (1): 0
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