公开(公告)号：US12113212B2

公开(公告)日：2024-10-08

申请号：US17650784

申请日：2022-02-11

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro Harada ,  Yoshiaki Murata ,  Kazuki Ise ,  Norio Takami

IPC: H01M4/485 ,  H01M4/02

CPC classification number: H01M4/485 ,  H01M2004/027 ,  H01M2220/20

Abstract: According to one embodiment, provided is an active material including a crystal particle that includes a niobium-titanium composite oxide. A ratio ANb/ATi of a Nb abundance ANb to a Ti abundance ATi in the crystal particle satisfies 2.3≤ANb/ATi≤4.0. According to a powder X-ray diffraction spectrum using a Cu-Kα ray for the crystal particle, an intensity ratio Iβ/Iα of a peak intensity Iβ of a peak β appearing at 12.5°≤2θ≤13.0° to a peak intensity Iα of a peak α appearing at 8.5°≤2θ≤9.0° is within a range of 0.1

公开(公告)号：US11316153B2

公开(公告)日：2022-04-26

申请号：US16804268

申请日：2020-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuki Ise ,  Yasunobu Yamashita ,  Kazuomi Yoshima ,  Shinsuke Matsuno ,  Norio Takami ,  Hiroki Inagaki

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M10/052 ,  H01M10/42 ,  H01M4/02

Abstract: According to one embodiment, provided is a lithium zinc secondary battery including a positive electrode, a negative electrode, an aqueous electrolyte, and a separator between the positive electrode and the negative electrode. The negative electrode includes a zinc-including metal body and an oxide on at least a part of a surface of the metal body. The aqueous electrolyte includes zinc and a lithium salt. Zinc is dissolved and deposited at the negative electrode. Lithium is inserted and extracted from the oxide in a range of −1.4 V (vs. SCE) or more and −1.0 V (vs. SCE) or less. A specific surface area of the oxide is 10 m2/g or more and 350 m2/g or less. A mol concentration ratio Zn/Li between zinc and lithium in the aqueous electrolyte is 1.0×10−5 or more and 0.3 or less.

公开(公告)号：US10439218B2

公开(公告)日：2019-10-08

申请号：US15692685

申请日：2017-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Fumihiro Tejima ,  Yasuhiro Harada ,  Kazuki Ise ,  Norio Takami

IPC: H01M4/485 ,  H01M10/0525 ,  H01M2/10 ,  C01G23/00 ,  C01G33/00 ,  B60L58/12 ,  B60L58/21 ,  B60L50/64 ,  H01M4/02

Abstract: According to one embodiment, there is provided an active material including particles of a composite oxide having an orthorhombic crystal structure and represented by the general formula Li2+wNa2−xM1yTi6−zM2zO14−δ. The particles of the composite oxide have an average crystallite size of 50 nm to 90 nm and an average primary particle size of 0.1 μm to 0.6 μm. M1 is at least one selected from the group consisting of Cs and K. M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Y, Co, Mn, and Al. w falls within 0≤w≤4, x falls within 0

公开(公告)号：US10326140B2

公开(公告)日：2019-06-18

申请号：US15445726

申请日：2017-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasunobu Yamashita ,  Yoshiyuki Isozaki ,  Mitsuru Ishibashi ,  Kazuki Ise ,  Norio Takami

IPC: H01M4/62 ,  H01M10/44 ,  H01M2/10 ,  H01M10/42 ,  H01M4/485 ,  H01M4/36 ,  H01M4/04 ,  H01M4/131 ,  H01M10/0525

Abstract: According to one embodiment, a nonaqueous electrolyte battery including a negative electrode that includes a negative electrode current collector and a negative electrode mixed-materials layer is provided. The negative electrode mixed-materials layer includes a titanium-including metal oxide particle that includes a phase including a carbon material on a surface and a binder that includes an acrylic resin. The negative electrode satisfies Equation (I): α/β>6  (I) α is a peel strength (kN/m) between the negative electrode current collector and the negative electrode mixed-materials layer, and β is a cutting strength (kN/m) in the negative electrode mixed-materials layer.

公开(公告)号：US10170761B2

公开(公告)日：2019-01-01

申请号：US15066433

申请日：2016-03-10

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuki Ise ,  Yasuhiro Harada ,  Norio Takami

IPC: H01M4/485 ,  C01G33/00 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/36 ,  H01M4/02

Abstract: In general, according to one embodiment, there is provided an active material. The active material contains active material primary particles of a monoclinic niobium-titanium composite oxide. The monoclinic niobium-titanium composite oxide contains at least one element selected from the group consisting of Mo, V, and W. A content of the at least one element in the monoclinic niobium-titanium composite oxide is within a range of 0.01 atm % or more and 2 atm % or less. Each of the active material primary particles has an aspect ratio within a range of 1 or more and less than 4 of a primary particle and a crystallite size within a range of 5 nm or more and 90 nm or less.

公开(公告)号：US20180123127A1

公开(公告)日：2018-05-03

申请号：US15854407

申请日：2017-12-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro Harada ,  Norio Takami ,  Yorikazu Yoshida ,  Kazuki Ise

IPC: H01M4/485 ,  C01G23/00 ,  C01G25/00 ,  C01G31/00 ,  C01G33/00 ,  C01G35/00 ,  H01M4/131 ,  C01G49/00 ,  C01G51/00 ,  H01M10/052 ,  H01M4/36 ,  C01G39/00 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

Abstract: In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of Li2+wNa2−xM1yTi6−zM2zO14+δ. In the general formula, the M1 is at least one selected from the group consisting of Cs and K; the M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al; and w is within a range of 0≤w≤4, x is within a range of 0

公开(公告)号：US10741830B2

公开(公告)日：2020-08-11

申请号：US15697958

申请日：2017-09-07

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuki Ise ,  Yasuhiro Harada ,  Norio Takami

IPC: H01M4/131 ,  H01M4/485 ,  H01M4/133 ,  H01M4/583 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0567 ,  H01M10/052 ,  H01M4/02

Abstract: According to one embodiment, an electrode including active material particles is provided. The active material particles contain monoclinic niobium-titanium composite oxide particles and an amorphous carbon body. The amorphous carbon body covers at least a part of surfaces of the monoclinic niobium-titanium composite oxide particles. A ratio S2/S1 of a carbon atom concentration S2 to a niobium atom concentration S1 at a surface of the electrode, according to X-ray photoelectron spectroscopy, is from 5 to 100.

公开(公告)号：US10361430B2

公开(公告)日：2019-07-23

申请号：US15261540

申请日：2016-09-09

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuki Ise ,  Yasuhiro Harada ,  Norio Takami

IPC: H01M10/056 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02 ,  H01M4/36

Abstract: According to one embodiment, an active material is provided. This active material includes active material particles each allowing lithium to be inserted thereinto and extracted therefrom in the range of 0.5 V to 2V (vs. Li+/Li), and carbon material layers at least partially coating the active material particles. The active material has a BET specific surface area S of 2 m2/g to 20 m2/g in accordance with a nitrogen adsorption method. Between the BET specific surface area S and the proportion M (mass %) of the mass of the carbon material layers to the total mass of the active material particles and carbon material layers, the ratio of S/M (m2/g) meets 0.5≤S/M≤5.

公开(公告)号：US10096826B2

公开(公告)日：2018-10-09

申请号：US14061168

申请日：2013-10-23

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuki Ise ,  Yorikazu Yoshida ,  Yasuhiro Harada ,  Hiroki Inagaki ,  Norio Takami

IPC: H01M4/485 ,  H01M4/131 ,  H01M10/052

Abstract: According to one embodiment, an active material containing a niobium titanium composite oxide is provided. The niobium titanium composite oxide has average composition represented by LiyNb2+xTi1−xO7+0.5x (0≤x≤0.5, 0≤y≤5.5). The niobium titanium composite oxide satisfies peak intensity ratios represented by the following formulae (1) to (3): 0.05≤(B/A)≤0.7  (1) 0.01≤(C/A)≤0.2  (2) 0≤(D/A)≤0.1  (3).

公开(公告)号：US09893349B2

公开(公告)日：2018-02-13

申请号：US15260606

申请日：2016-09-09

Applicant: Kabushiki Kaisha Toshiba

Inventor： Kazuki Ise ,  Yasuhiro Harada ,  Norio Takami

IPC: H01M4/485 ,  H01M4/525 ,  H01M4/36 ,  H01M4/58 ,  H01M4/131 ,  H01M10/052 ,  H01M2/34 ,  H01M2/10 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M2/1077 ,  H01M2/348 ,  H01M4/131 ,  H01M4/485 ,  H01M4/5825 ,  H01M10/052 ,  H01M2004/027 ,  H01M2220/20 ,  Y02E60/122

Abstract: According to one embodiment, an active material is provided. The active material includes active material particles. The active material particle includes a core particle and a shell layer which covers at least a part of a surface of the core particle. The core particle contains a monoclinic or orthorhombic niobium-titanium composite oxide. The shell layer contains a compound which is at least one compound selected from the group consisting of a lithium-titanium composite oxide, an Nb-containing lithium-titanium composite oxide, a lithium-niobium composite oxide, a lithium phosphate, and an Nb-containing lithium phosphate. The compound has a composition different from that of the monoclinic or orthorhombic niobium-titanium composite oxide.