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公开(公告)号：US20240322148A1
公开(公告)日：2024-09-26
申请号：US18457494
申请日：2023-08-29
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Kazuki ISE , Keigo HOSHINA , Yasuhiro HARADA , Norio TAKAMI
CPC classification number: H01M4/485 , H01M10/425 , H01M2004/021 , H01M2010/4271 , H01M2220/20
Abstract: According to one embodiment, provided is an active material including a composite metal oxide containing an Mo element, an Nb element, and at least one element M selected from the group consisting of Ti, V, Ta, Fe, Co, Mn, Ni, Bi, Sb, As, P, Cr, W, B, Na, K, Mg, Al, Ca, Y and Si. A crystal structure of the composite metal oxide has a non-periodic crystal structure. The active material includes the composite metal oxide as spherical particles. The spherical particles are secondary particles containing primary particles of the composite metal oxide having an average particle size from 10 nm to 300 nm, an average particle size of the secondary particles being from 1 μm to 10 μm.
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2.发明公开公开(公告)号：US20240097224A1
公开(公告)日：2024-03-21
申请号：US18173754
申请日：2023-02-23
Applicant: Kabushiki Kaisha Toshiba
Inventor： Taro FUKAYA , Asato KONDO , Yasuhiro HARADA
Abstract: In general, according to one embodiment, a recycling method is provided. The method includes dispersing an electrode containing a niobium titanium oxide in water; separating the niobium titanium oxide from the electrode dispersed in the water; and applying a first heat treatment to the separated niobium titanium oxide.
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3.发明公开公开(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.
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公开(公告)号：US20230327097A1
公开(公告)日：2023-10-12
申请号：US17823544
申请日：2022-08-31
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yasunobu YAMASHITA , Yorikazu YOSHIDA , Yasuhiro HARADA , Norio TAKAMI , Shinsuke MATSUNO
IPC: H01M4/485 , H01M4/505 , H01M4/62 , H01M50/574
CPC classification number: H01M4/485 , H01M4/505 , H01M4/625 , H01M50/574 , H01M2004/021
Abstract: In general, according to one embodiment, an electrode including a mixture layer containing a titanium-containing oxide and a conductive agent is provided. The electrode satisfies expression (1). Where, L* is a lightness of the electrode according to JISZ8722:2009. Also, ri is a particle size for the mixture layer at a volume cumulative frequency dx, where i is a natural number from 1 to 9. The volume cumulative frequency dx is a volume-based cumulative frequency for which accumulation starts with a smaller particle size. The volume cumulative frequency dx takes a value from 10% to 90% in increments of 10%.
7.0
≤
100
−
L
∗
/
∑
1
9
1
r
i
d
i
≤
11.0
(1)-
公开(公告)号：US20230299370A1
公开(公告)日：2023-09-21
申请号：US17822752
申请日：2022-08-26
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yasuhiro HARADA , Kazuki ISE , Yasunobu YAMASHITA , Norio TAKAMI
IPC: H01M10/44 , H01M10/48 , H01M4/48 , H01M10/0525
CPC classification number: H01M10/443 , H01M10/486 , H01M4/483 , H01M10/0525
Abstract: In general, according to one embodiment, a charge control method includes acquiring a measured temperature of a lithium ion battery, acquiring a threshold value for stopping charging of the lithium ion battery according to the measured temperature of the lithium ion battery based on a relationship between a cycle life and a charging capacity of the lithium ion battery for each temperature of the lithium ion battery, and, charging the lithium ion battery based on the threshold value.
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Patent Agency Ranking
公开(公告)号：US20230197931A1
公开(公告)日：2023-06-22
申请号：US17822605
申请日：2022-08-26
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yuta KANAI , Tetsuya SASAKAWA , Kazuomi YOSHIMA , Tomoko SUGIZAKI , Yasunobu YAMASHITA , Kazuki ISE , Taro FUKAYA , Norio TAKAMI , Yasuhiro HARADA , Keigo HOSHINA
IPC: H01M4/36 , H01M10/0525 , H01M10/42 , H01M4/48
CPC classification number: H01M4/364 , H01M10/0525 , H01M10/425 , H01M4/483 , H01M2220/20 , H01M2004/027
Abstract: According to one embodiment, a secondary battery including a negative electrode. The negative electrode includes a negative electrode current collector and a negative electrode mixture layer. A thickness of the negative electrode current collector is in a range of 8 μm to 18 μm. The negative electrode current collector includes a first current collector end surface extending along a stacking direction. The negative electrode mixture layer includes a niobium-titanium composite oxide, and a first protrusion protruding from the first current collector end surface along a first direction orthogonal to the stacking direction. A protrusion length A1 of the first protrusion satisfies 0 mm
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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
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
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公开(公告)号：US20220093975A1
公开(公告)日：2022-03-24
申请号：US17186570
申请日：2021-02-26
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Keigo HOSHINA , Kazuomi YOSHIMA , Yasunobu YAMASHITA , Yuta KANAI , Yasuhiro HARADA , Norio TAKAMI
IPC: H01M10/0587 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/0525 , B60L50/64
Abstract: According to one embodiment, provided is an electrode group including a positive electrode and a negative electrode that includes a titanium-containing oxide. The electrode group has a wound structure of a flat shape, in which a stack including the positive electrode and the negative electrode is wound such that a center of the wound structure lies along a first direction. At least a part of a portion of the negative electrode, positioned within a thickness of 0.2 t from an innermost lap along a longest straight line in a wound cross-section of the wound structure orthogonal to the first direction with respect to a thickness t from the innermost lap to an outermost lap along the longest straight line, includes a slit that lies along the first direction.
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公开(公告)号：US20200295400A1
公开(公告)日：2020-09-17
申请号：US16564056
申请日：2019-09-09
Applicant: Kabushiki Kaisha Toshiba
Inventor： Yasuhiro HARADA , Tomoe KUSAMA , Norio TAKAMI , Kazuomi YOSHIMA
IPC: H01M10/0562 , H01M10/052 , H01M4/58
Abstract: According to one embodiment, provided is a solid electrolyte material including an oxide, the oxide including an octahedral coordination structure that includes a metal element M and oxygen atoms arranged centering on the metal element M. The metal element M includes Nb and Ta. Amass ratio αTa/αNb of a mass αTa of Ta to a mass αNb of Nb is within a range of 5×10−5≤αTa/αNb≤3×10−3.
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公开(公告)号：US20200091513A1
公开(公告)日：2020-03-19
申请号：US16289043
申请日：2019-02-28
Inventor： Yasuhiro HARADA , Norio Takami , Yasunobu Yamashita , Kazuomi Yoshima
IPC: H01M4/485 , H01M10/0525 , H01M4/131 , H01M4/36 , H01M4/58 , H01M10/42 , H01M2/10 , B60L50/64 , B60L7/10
Abstract: According to one embodiment, an active material is provided. The active material includes a primary particle containing a phosphorus-containing monoclinic niobium-titanium composite oxide. The primary particle has a concentration gradient in which a phosphorus concentration increases from the gravity point of the primary particle toward the surface of the primary particle.
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