公开(公告)号：US20220085365A1

公开(公告)日：2022-03-17

申请号：US17186819

申请日：2021-02-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kakuya UEDA ,  Yasunobu YAMASHITA ,  Keigo HOSHINA ,  Tetsuya SASAKAWA ,  Yasuhiro HARADA ,  Norio TAKAMI ,  Shinsuke MATSUNO

IPC: H01M4/485 ,  H01M4/133 ,  H01M10/42 ,  H01M4/131

Abstract: According to one embodiment, an electrode is provided. The electrode includes a current collector, and an active material-containing layer which is formed on a surface of the current collector and includes a plurality of niobium titanium composite oxide particles. A X-ray diffraction pattern using a Cu-Kα ray source with respect to a surface of the active material-containing layer includes a peak A with a highest intensity in a range of 2θ=26°±0.2° and a peak B with a highest intensity in a range of 2θ=23.9°±0.2°. An intensity ratio (Ia/Ib) between an intensity Ia of the peak A and an intensity Ib of the peak B is in a range of 1.80 or more to 2.60 or less.

公开(公告)号：US20250029992A1

公开(公告)日：2025-01-23

申请号：US18588085

申请日：2024-02-27

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Norio TAKAMI ,  Yuiko KOITABASHI ,  Kakuya UEDA

IPC: H01M4/485 ,  H01M4/02 ,  H01M4/66 ,  H01M10/0569 ,  H01M50/209 ,  H01M50/296 ,  H02J7/00

Abstract: In general, according to one embodiment, a secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The nonaqueous electrolyte includes a nonaqueous solvent and an electrolyte. The nonaqueous solvent includes a first solvent including at least one selected from the group consisting of ethyl propionate, propyl propionate and ethyl butyrate, and a second solvent including γ-butyrolactone. The electrolyte includes lithium bisfluorosulfonylimide.

公开(公告)号：US20240088385A1

公开(公告)日：2024-03-14

申请号：US18169982

申请日：2023-02-16

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yoshiaki MURATA ,  Kakuya UEDA ,  Yasuhiro HARADA ,  Kazuki ISE ,  Norio TAKAMI

IPC: H01M4/58 ,  H01M50/296

CPC classification number: H01M4/5825 ,  H01M50/296 ,  H01M2004/027

Abstract: In general, according to one embodiment, a niobium-titanium oxide is provided. The niobium-titanium oxide satisfies Formulae (1) to (3) below in an L*a*b* color space according to Japanese Industrial Standard JIS Z 8722:2009:


95.0≤L*≤100  (1)



−1.0≤a*≤1.0  (2)



−1.0≤b*≤6.0  (3).

公开(公告)号：US20240079576A1

公开(公告)日：2024-03-07

申请号：US18458267

申请日：2023-08-30

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kakuya UEDA ,  Yoshiaki MURATA ,  Yasuhiro HARADA ,  Norio TAKAMI ,  Shinsuke MATSUNO

IPC: H01M4/485 ,  H01M10/0525

CPC classification number: H01M4/485 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2220/20

Abstract: A niobium-titanium-based oxide includes niobium-titanium-based oxide particles, wherein an Si2p peak area and an Nb3d peak area, as measured by X-ray photoelectron spectroscopy for the niobium-titanium-based oxide particles, satisfy a ratio A of 0.40≤A≤1.0, provided that the ratio A is the Si2p peak area/the Nb3d peak area.

公开(公告)号：US20220293926A1

公开(公告)日：2022-09-15

申请号：US17408910

申请日：2021-08-23

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro HARADA ,  Yorikazu YOSHIDA ,  Kakuya UEDA ,  Norio TAKAMI

IPC: H01M4/485 ,  H01M10/42

Abstract: According to one embodiment, an active material is provided. The active material includes an Nb2TiO7 phase and at least one Nb-rich phase selected from the group consisting of an Nb10Ti2O29 phase, an Nb14TiO37 phase, and an Nb24TiO64 phase. The active material includes potassium and phosphorus, and a total concentration of potassium and phosphorus in the active material is in the range of 0.01% by mass to 5.00% by mass. An average crystallite diameter is in the range of 80 nm to 150 nm. In a particle size distribution chart obtained by a laser diffraction scattering method, D10 is 0.3 μm or greater, and D90 is 10 μm or less. The active material satisfies a peak intensity ratio represented by the following Formula (1). 0

公开(公告)号：US20240310452A1

公开(公告)日：2024-09-19

申请号：US18581459

申请日：2024-02-20

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kakuya UEDA ,  Yoshiaki MURATA ,  Yasunobu YAMASHITA ,  Taro FUKAYA

IPC: G01R31/385 ,  B65D81/18 ,  G01R31/36 ,  G01R31/367 ,  H02J7/00

CPC classification number: G01R31/386 ,  B65D81/18 ,  G01R31/3648 ,  G01R31/367 ,  H02J7/0069 ,  B65D2585/88

Abstract: A secondary battery diagnosis method rapidly charges a secondary battery at a low temperature and stores the secondary battery in a range of 45° C. or higher and 70° C. or lower for a predetermined period. The method determines a degree of voltage drop of the secondary battery between before and after storing the secondary battery. The secondary battery includes a negative electrode in which an active material having an average operating potential of 1.0 VvsLi/Li+ or more occupies 50% by weight or more of a negative electrode active material-containing layer.

公开(公告)号：US20240097274A1

公开(公告)日：2024-03-21

申请号：US18176224

申请日：2023-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasunobu YAMASHITA ,  Kakuya UEDA ,  Mitsuhiro OKI ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M50/431 ,  H01M4/48 ,  H01M10/42

CPC classification number: H01M50/431 ,  H01M4/483 ,  H01M10/425 ,  H01M2004/027

Abstract: In general, according to one embodiment, a nonaqueous electrolyte battery is provided. The nonaqueous electrolyte battery includes an electrode group, including a positive electrode, a negative electrode, and a separator. The separator includes at least one metal-element containing portion containing a metal element. The at least one metal-element containing portion is provided on a surface of the separator in contact with the negative electrode. The at least one metal-element containing portion contains at least one selected from a group consisting of a metal, a metallic oxide, and a metallic fluoride. An area of the at least one metal-element containing portion is in a range of 0.3 mm2 to 3.2 mm2.

公开(公告)号：US20230299390A1

公开(公告)日：2023-09-21

申请号：US17823651

申请日：2022-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kakuya UEDA ,  Keigo HOSHINA

IPC: H01M12/08 ,  H01M10/0562 ,  H01M4/40

CPC classification number: H01M12/08 ,  H01M10/0562 ,  H01M4/405 ,  H01M2300/0071 ,  H01M2004/027

Abstract: According to one embodiment, provided is an air battery including a negative electrode, an air electrode to which oxygen is supplied, a solid electrolyte layer positioned between the negative electrode and the air electrode, an aqueous electrolyte layer positioned between the solid electrolyte layer and the air electrode, and a proton conduction layer positioned between the aqueous electrolyte layer and the air electrode. The aqueous electrolyte layer includes an aqueous electrolyte including a polyprotic acid having two or more carboxyl groups, an electrolyte salt, and water.

公开(公告)号：US20240313205A1

公开(公告)日：2024-09-19

申请号：US18455043

申请日：2023-08-24

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro HARADA ,  Kazuki ISE ,  Yasunobu YAMASHITA ,  Kakuya UEDA ,  Yoshiaki MURATA ,  Norio TAKAMI

IPC: H01M4/485 ,  H01M50/204

CPC classification number: H01M4/485 ,  H01M50/204 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

Abstract: According to one embodiment, an active material including a niobium-titanium oxide phase having a monoclinic structure is provided. The niobium-titanium oxide phase has a crystal structure that includes in a crystal lattice thereof, at least one per unit lattice of a (Nb, Ti) O6 octahedron site composed only with vertex-sharing, a bond angle distortion in the octahedron site being 0.8 σ2/deg2 or less. A crystallite diameter of the niobium-titanium oxide phase is in a range from 85 nm or greater to 130 nm or less.

公开(公告)号：US20240105917A1

公开(公告)日：2024-03-28

申请号：US18174909

申请日：2023-02-27

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro HARADA ,  Taro FUKAYA ,  Yasunobu YAMASHITA ,  Kakuya UEDA ,  Yoshiaki MURATA ,  Norio TAKAMI

IPC: H01M4/36 ,  C01G33/00 ,  H01M4/131 ,  H01M4/133 ,  H01M4/485 ,  H01M4/587 ,  H01M50/574

CPC classification number: H01M4/366 ,  C01G33/006 ,  H01M4/131 ,  H01M4/133 ,  H01M4/485 ,  H01M4/587 ,  H01M50/574 ,  H01M2004/027

Abstract: According to one embodiment, provided is an active material including a niobium titanium-containing oxide phase and a carbon coating layer. The niobium titanium-containing oxide phase contains a niobium titanium-containing oxide having a monoclinic structure and Na, and a Na content therein is 0 ppm or more and 100 ppm or less. The carbon coating layer coats at least a part of the niobium titanium-containing oxide phase, and contains 0.001% or more of carboxyl group.