公开(公告)号：US20240097098A1

公开(公告)日：2024-03-21

申请号：US18176136

申请日：2023-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuomi YOSHIMA ,  Yuta KANAI ,  Hirofumi YASUMIISHI ,  Tetsuya SASAKAWA

IPC: H01M4/04 ,  H01M4/66

CPC classification number: H01M4/0435 ,  H01M4/661 ,  H01M4/667

Abstract: In a manufacturing method of an electrode structure of an embodiment, in a belt-like member in which an uncoated region not coated with an active material-containing layer is formed in one of long edges and its vicinity in a current collector, the active material-containing layer is rolled, and a tension in a longitudinal direction is applied to the belt-like member between a pulling unit pulling the belt-like member and a rolling unit rolling the active material-containing layer. In the method, the uncoated region is pushed by a projection projecting to an outer peripheral side in a roller between the rolling unit and the pulling unit, thereby enlarging the uncoated region in the longitudinal direction. A projection length of the projection to the projection end is larger than the thickness of the rolled active material-containing layer.

公开(公告)号：US20230299345A1

公开(公告)日：2023-09-21

申请号：US17822193

申请日：2022-08-25

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yuiko KOITABASHI ,  Kazuomi YOSHIMA ,  Asato KONDO ,  Sayaka MORIMOTO ,  Tetsuya SASAKAWA

IPC: H01M10/0567 ,  H01M50/204 ,  H01M50/249 ,  H01M50/284 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/62 ,  H01M50/296

CPC classification number: H01M10/0567 ,  H01M50/204 ,  H01M50/249 ,  H01M50/284 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/62 ,  H01M50/296 ,  H01M2220/20 ,  H01M2300/0025 ,  H01M2004/027

Abstract: In general, according to one embodiment, a secondary battery includes a positive electrode and a nonaqueous electrolyte. The positive electrode includes a sulfur-containing layer provided on at least a part of a positive electrode active material-containing layer. The nonaqueous electrolyte includes a sulfur-containing compound consisting of at least one of a sulfur-containing imide compound or a sultone compound, or consisting of at least one of a sulfur-containing imide compound, a sultone compound or a propanesulfonic acid ester. The secondary battery satisfies 1×10−6≤E/A≤9×10−4. A denotes a mass of sulfur atoms per unit volume (g/m3) of the sulfur-containing layer. E denotes a concentration (mol/L) of the sulfur-containing compound in the nonaqueous electrolyte.

公开(公告)号：US20220085357A1

公开(公告)日：2022-03-17

申请号：US17186707

申请日：2021-02-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuomi YOSHIMA ,  Tomoe KUSAMA ,  Tetsuya SASAKAWA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M4/36 ,  H01M10/0565 ,  H01M10/42 ,  H01M4/66

Abstract: According to one embodiment, a secondary battery includes a positive electrode including first vacancies, a negative electrode including second vacancies, and an electrolyte. The electrolyte includes a gel polymer portion and a liquid portion, and the gel polymer portion has a gel-part ratio within a range of from 20% to 80%. At least a part of the electrolyte is held in the first vacancies and the second vacancies. A first ratio r1 of the liquid portion to the gel polymer portion in the first vacancies is within a range of 0.01≤r1≤10. A second ratio r2 of the liquid portion to the gel polymer portion in the second vacancies is within a range of 0.01≤r2≤10.

公开(公告)号：US20210296635A1

公开(公告)日：2021-09-23

申请号：US17007625

申请日：2020-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuomi YOSHIMA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/485 ,  H01M10/42

Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer including active material particles containing a niobium-titanium composite oxide and a nitrogen atom-containing binder. The spectral data obtained by performing X-ray photoelectron spectroscopy measurement on a surface of the active material-containing layer includes a first peak existing at 210±5 eV position, a second peak existing at 458±5 eV position, and a third peak existing at 400±5 eV position. In the X-ray photoelectron spectroscopy measurement, an element ratio r1 of a nitrogen atom to a niobium atom and a titanium atom is within the range of 0.2 to 2.

公开(公告)号：US20210083263A1

公开(公告)日：2021-03-18

申请号：US16802656

申请日：2020-02-27

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro HARADA ,  Norio TAKAMI ,  Kazuomi YOSHIMA ,  Yasunobu YAMASHITA

IPC: H01M4/131 ,  H01M4/36 ,  H01M2/10 ,  B60W30/18

Abstract: According to one embodiment, provided is a composite oxide containing lithium, niobium, and tantalum. A mass ratio of tantalum with respect to niobium is in a range of from 0.01% to 1.0%.

公开(公告)号：US20190198876A1

公开(公告)日：2019-06-27

申请号：US16289123

申请日：2019-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Norio TAKAMI ,  Kazuomi YOSHIMA ,  Takuya IWASAKI ,  Tomoko SUGIZAKI ,  Yasuhiro HARADA

IPC: H01M4/62 ,  H01M10/42 ,  H01M2/10 ,  H01M4/485 ,  H01M10/0525 ,  B60L50/64

CPC classification number: H01M4/62 ,  B60L50/64 ,  C01G23/003 ,  H01M2/1077 ,  H01M2/1626 ,  H01M4/13 ,  H01M4/131 ,  H01M4/366 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/622 ,  H01M10/0525 ,  H01M10/425 ,  H01M10/44 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2010/4271 ,  H01M2220/20

Abstract: According to one embodiment, there is provided an electrode including active material particles, polymer fibers and inorganic solid particles. The polymer fibers have an average fiber diameter of 1 nm to 100 nm.

公开(公告)号：US20180277899A1

公开(公告)日：2018-09-27

申请号：US15697709

申请日：2017-09-07

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Norio TAKAMI ,  Kazuomi YOSHIMA ,  Hayato SEKI ,  Shinsuke MATSUNO

IPC: H01M10/0568 ,  H01M10/42 ,  H01M10/44 ,  H01M10/0562 ,  H01M2/10 ,  H01M4/485 ,  B60L7/10 ,  B60L11/18

CPC classification number: H01M10/0568 ,  B60L7/10 ,  B60L53/22 ,  B60L58/10 ,  H01M2/1077 ,  H01M2/166 ,  H01M4/485 ,  H01M10/054 ,  H01M10/0562 ,  H01M10/425 ,  H01M10/441 ,  H01M2220/20 ,  H01M2300/0068

Abstract: According to one embodiment, a secondary battery including a positive electrode, a negative electrode, a separator, a first electrolyte, and a second electrolyte is provided. The separator is provided at least between the positive electrode and the negative electrode. The separator includes an alkali metal ion conductive solid electrolyte. The first electrolyte is contained in at least the positive electrode. The first electrolyte includes a first alkali metal salt and a first aqueous solvent. The second electrolyte is contained in at least the negative electrode. The second electrolyte includes a second alkali metal salt and a second aqueous solvent.

公开(公告)号：US20170271708A1

公开(公告)日：2017-09-21

申请号：US15392037

申请日：2016-12-28

Applicant: Kabushiki Kaisha Toshiba

Inventor： Kazuomi YOSHIMA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M10/04 ,  H01M2/10 ,  H01M10/48 ,  H01M10/0583 ,  H01M10/0525 ,  H01M10/42

CPC classification number: H01M10/0418 ,  H01M2/1077 ,  H01M10/0525 ,  H01M10/0583 ,  H01M10/425 ,  H01M10/48 ,  H01M2010/4271 ,  H01M2220/20 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A non-aqueous electrolyte battery is provided with a bipolar electrode unit and an insulating layer including non-aqueous electrolyte. The insulating layer covers positive and negative electrode active material layers on both side surfaces of a current collector of a bipolar electrode of the unit. The unit is folded at every predetermined length to have flat portions arranged to face each other and bent portions arranged between the flat portions to connect the flat portions. A thickness of one part of the insulating layer of the electrode, the one part being positioned on an outer side surface of each bent portion, is set to be larger than a thickness of the other part of the insulating layer, the other part being positioned on each flat portion.

公开(公告)号：US20170271666A1

公开(公告)日：2017-09-21

申请号：US15455160

申请日：2017-03-10

Applicant: Kabushiki Kaisha Toshiba

Inventor： Takashi KISHI ,  Kazuomi YOSHIMA ,  Wen ZHANG ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M4/485 ,  H01M2/16 ,  H01M10/0565 ,  H01M10/42

CPC classification number: H01M4/485 ,  H01M2/1646 ,  H01M2/166 ,  H01M2/1673 ,  H01M2/1686 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/625 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/0587 ,  H01M10/4235 ,  H01M10/425 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2200/20 ,  H01M2220/20 ,  H01M2300/0085 ,  Y02E60/122 ,  Y02T10/7011

Abstract: According to one embodiment, a nonaqueous electrolyte battery is provided. The nonaqueous electrolyte battery includes a positive electrode, a negative electrode including a negative electrode active material layer, a separator layer, an intermediate region, and a gel nonaqueous electrolyte. The separator layer and the intermediate region hold at least a part of the gel nonaqueous electrolyte. The nonaqueous electrolyte battery satisfies a volume ratio VA/VB of 5 or more. VA is a volume of the intermediate region. VB is an average volume of gaps among the particles of the niobium-and-titanium-containing composite oxide in the negative electrode active material layer.

公开(公告)号：US20240234679A9

公开(公告)日：2024-07-11

申请号：US18400926

申请日：2023-12-29

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro HARADA ,  Kazuomi YOSHIMA ,  Norio TAKAMI

IPC: H01M4/131 ,  C01G33/00 ,  H01M4/134 ,  H01M10/0525

CPC classification number: H01M4/131 ,  C01G33/006 ,  H01M4/134 ,  H01M10/0525 ,  C01P2002/74 ,  H01M2004/027

Abstract: An electrode material may include an active material particle containing: a niobium-titanium composite oxide having an average composition in which a molar ratio of niobium to titanium (MNb/MTi) is greater than 2; and at least one element A selected from the group consisting of potassium, iron and phosphorus. The active material particle may contain the element A at a concentration in the range of 100 ppm to 2000 ppm.