公开(公告)号：US20230411612A1

公开(公告)日：2023-12-21

申请号：US18172864

申请日：2023-02-22

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tetsuya SASAKAWA ,  Kazuomi YOSHIMA ,  Sayaka MORIMOTO

IPC: H01M4/485 ,  H01M4/48 ,  H01M4/62 ,  H01M4/131

CPC classification number: H01M4/485 ,  H01M4/483 ,  H01M4/622 ,  H01M4/131 ,  H01M2004/027

Abstract: In general, according to one embodiment, an electrode material is provided. The electrode material includes at least one of niobium titanium oxide or titanium dioxide. A moisture content measured by a Karl Fischer method is in a range of 2000 ppm or more and 10,000 ppm or less.

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

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.

公开(公告)号：US20210083251A1

公开(公告)日：2021-03-18

申请号：US16804489

申请日：2020-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: H01M2/16 ,  H01M10/24 ,  H01M10/054 ,  H01M10/0562 ,  H01M10/42 ,  H01M4/485 ,  H01M4/66 ,  H01M2/10

Abstract: According to one embodiment, a separator is provided. The separator includes a composite membrane. The composite membrane includes a substrate layer, a first composite layer, and a second composite layer. The first composite layer is located on one surface of the substrate layer. The second composite layer is located on the other surface of the substrate layer. The composite membrane has a coefficient of air permeability of 1×10−14 m2 or less. The first composite layer has a first surface and a second surface. The first surface is in contact with the substrate layer. The second surface is located on an opposite side to the first surface. Denseness of a portion including the first surface is lower than denseness of a portion including the second surface in the first composite layer.

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.

公开(公告)号：US20190296357A1

公开(公告)日：2019-09-26

申请号：US16118993

申请日：2018-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hayato SEKI ,  Yumiko SEKIGUCHI ,  Kazuomi YOSHIMA ,  Yasuyuki HOTTA ,  Shinsuke MATSUNO ,  Norio TAKAMI

IPC: H01M4/62 ,  H01M10/42 ,  H01M4/485 ,  B60L11/18

Abstract: According to one embodiment, provided is a secondary battery including an aqueous electrolyte, a positive electrode, and a negative electrode. A compound containing an element A is present on at least a part of the surface of the negative electrode. The element A is at least one selected from the group consisting of Hg, Pb, Zn, and Bi. According to scanning electron microscopy, a region where the compound containing the element A is present accounts

公开(公告)号：US20190296344A1

公开(公告)日：2019-09-26

申请号：US16118967

申请日：2018-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hayato SEKI ,  Yumiko SEKIGUCHI ,  Kazuomi YOSHIMA ,  Yasuyuki HOTTA ,  Shinsuke MATSUNO ,  Norio TAKAMI

IPC: H01M4/485 ,  H01M10/42 ,  B60L11/18

Abstract: According to one embodiment, provided is a secondary battery including an aqueous electrolyte, a positive electrode, and a negative electrode, where the negative electrode includes a negative electrode active material containing a Ti-containing composite oxide. At least one element A selected from the group consisting of Hg, Pb, Zn, and Bi is present on a surface of the negative electrode. An average of molar ratios (A/(A+Ti)) of the element A is more than or equal to 5% and less than or equal to 40%. Each of the molar ratios is a molar amount of the element A to a sum between the molar amount of the element A and a molar amount of Ti on the surface of the negative electrode, according to scanning electron microscopy-energy dispersive X-ray spectroscopy.

公开(公告)号：US20180277906A1

公开(公告)日：2018-09-27

申请号：US15698895

申请日：2017-09-08

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: H01M10/42 ,  H01M10/0525 ,  H01M2/10

CPC classification number: H01M10/4257 ,  H01M2/024 ,  H01M2/1077 ,  H01M2/14 ,  H01M2/266 ,  H01M2/305 ,  H01M10/0413 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2220/20 ,  Y02E60/122 ,  Y02T10/7011

Abstract: In one embodiment, a secondary battery includes two or more electrode groups. The negative electrode tabs of one of the electrode groups and the positive electrode tabs of the other electrode group are arranged in rows. One of the positive electrode tabs of one of the electrode groups and the negative electrode tabs of the other electrode group is disposed at the other end in the second direction. The other is disposed at one end in the second direction at a position different from those of the negative electrode tabs of one of the electrode groups and the positive electrode tabs of the other electrode group that are connected in series.

公开(公告)号：US20180277905A1

公开(公告)日：2018-09-27

申请号：US15697574

申请日：2017-09-07

Applicant: Kabushiki Kaisha Toshiba

Inventor： Yasuhiro HARADA ,  Norio TAKAMI ,  Kazuomi YOSHIMA

IPC: H01M10/42 ,  H01M4/485 ,  H01M4/62 ,  H01M10/05 ,  H01M2/10

CPC classification number: H01M10/4257 ,  H01M2/1077 ,  H01M4/131 ,  H01M4/366 ,  H01M4/485 ,  H01M4/621 ,  H01M4/624 ,  H01M10/05 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/027 ,  H01M2010/4271 ,  H01M2220/20 ,  H01M2300/0065 ,  H01M2300/0068 ,  Y02E60/122 ,  Y02T10/7011

Abstract: According to one embodiment, there is provided an electrode construct including an active material-containing layer and a sodium ion-blocking layer. The active material-containing layer contains a sodium-containing titanium composite oxide having a crystal structure belonging to a space group Cmca or a space group Fmmm. The sodium ion-blocking layer is disposed on a surface of the active material-containing layer. The sodium ion-blocking layer contains a material impermeable to sodium ions.

公开(公告)号：US20180277843A1

公开(公告)日：2018-09-27

申请号：US15692760

申请日：2017-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: H01M4/485 ,  H01M10/0525

CPC classification number: H01M4/485 ,  B60L50/30 ,  B60L50/66 ,  C01P2002/30 ,  C01P2002/32 ,  H01M2/1646 ,  H01M2/1673 ,  H01M2/1686 ,  H01M4/131 ,  H01M4/385 ,  H01M10/0525 ,  H01M10/625 ,  H01M2004/027 ,  Y02E60/122 ,  Y02T10/7011

Abstract: According to one embodiment, an electrode composite is provided. The electrode composite includes a negative electrode active material-containing layer and an insulating particle layer. The negative electrode active material-containing layer includes negative electrode active material secondary particles having an average secondary particle size of from 1 μm to 30 μm. The insulating particle layer is provided on the negative electrode active material-containing layer. The insulating particle layer includes a first surface and a second surface opposed to the first surface. The first surface is in contact with the negative electrode active material-containing layer. The second surface has a surface roughness of 0.1 μm or less.