公开(公告)号：US20220302431A1

公开(公告)日：2022-09-22

申请号：US17462370

申请日：2021-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yuta KANAI ,  Yasunobu YAMASHITA ,  Kazuomi YOSHIMA ,  Keigo HOSHINA ,  Tetsuya SASAKAWA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M4/13 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0587

Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer and a current collector. The active material-containing layer comprises a first edge having an arc shape and a second edge positioned opposite to the first edge. The current collector comprises an active material-supporting section supporting the active material-containing layer, and an active material-non-supporting section. The curving amount is represented by a maximum distance from the first edge to a reference line connecting two points on the first edge. The curving amount is in a range of −1 mm or more and less than 0 mm.

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：US20220085353A1

公开(公告)日：2022-03-17

申请号：US17186066

申请日：2021-02-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro HARADA ,  Kazuomi YOSHIMA ,  Norio TAKAMI

IPC: H01M4/36 ,  H01M4/485 ,  H01M10/0525 ,  B60L50/64

Abstract: According to one embodiment, an active material is provided. The active material includes a first niobium titanium composite oxide expressed by a general formula (I), and a second niobium titanium composite oxide expressed by a general formula (II) and having a rutile-type crystal structure. The first niobium titanium composite oxide belongs to a crystal structure of a space group C2/m, and has a difference Δp between a maximum value and a minimum value of Nb occupancy in a 4i site, the difference Δp being 0.50≤Δp≤0.80, KaNb2−bMb+1−cTicO7  (I) Ti1−yNbyOz  (II).

公开(公告)号：US20220085352A1

公开(公告)日：2022-03-17

申请号：US17186046

申请日：2021-02-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasunobu YAMASHITA ,  Keigo HOSHINA ,  Yasuhiro HARADA ,  Norio TAKAMI ,  Shinsuke MATSUNO

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

Abstract: According to one embodiment, provided is an electrode including a current collector and an active material-containing layer in contact with the current collector. The active material-containing layer contains a carbon nanotube and particles of titanium-containing oxide having an average particle size or 0.1 μm to 3 μm. A peel strength between the current collector and the active material-containing layer is within a range of 0.2 kN/m to 0.7 kN/m.

公开(公告)号：US20210075225A1

公开(公告)日：2021-03-11

申请号：US16783265

申请日：2020-02-06

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Taro FUKAYA ,  Norio TAKAMI ,  Yasuhiro HARADA ,  Takashi KISHI ,  Keigo HOSHINA ,  Kazuomi YOSHIMA ,  Yasunobu YAMASHITA

IPC: H02J7/00 ,  H01M10/46 ,  H01M10/44

Abstract: According to one embodiment, information related to a positive-electrode electric potential and a negative-electrode electric potential of each of one or more batteries is acquired, and whether deviation of the positive/negative-electrode electric potentials from a reference state is beyond a prescribed range is determined for each of one or more batteries. Further, in response to at least existence of a battery-to-be-restored that is a battery in which the determined deviation of positive/negative-electrode electric potentials from a reference state is beyond a prescribed range, a state of charge of the battery-to-be-restored is held in a restoration holding range for a prescribed time.

公开(公告)号：US20200343584A1

公开(公告)日：2020-10-29

申请号：US16923567

申请日：2020-07-08

Applicant: Kabushiki Kaisha Toshiba

Inventor： Yasuhiro HARADA ,  Norio TAKAMI ,  Hiroki INAGAKI

IPC: H01M10/0562 ,  C01G25/00 ,  H01B1/08 ,  C04B35/645 ,  C04B35/486 ,  C01G23/00 ,  B32B18/00 ,  C04B35/626 ,  C04B35/462 ,  C04B35/01

Abstract: According to one embodiment, a solid electrolyte includes a sintered body of ceramic grains. The sintered body includes a crystal plane having an ion conducting path. The crystal plane is oriented in a direction which intersects at least one surface of the solid electrolyte.

公开(公告)号：US20200303765A1

公开(公告)日：2020-09-24

申请号：US16561792

申请日：2019-09-05

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: H01M10/056 ,  H01M10/0525 ,  H01M10/42 ,  H01M2/10 ,  B60L7/10 ,  B60L50/64

Abstract: According to one embodiment, provided is a secondary battery including a positive electrode, a negative electrode capable of allowing lithium ions to be inserted and to be extracted, and an inorganic solid-containing layer. The inorganic solid-containing layer is disposed between the positive electrode and the negative electrode. The inorganic solid-containing layer contains a mixed solvent, a lithium salt dissolved in the mixed solvent, and inorganic solid particles. The mixed solvent includes a fluorinated carbonate and a fluorinated ether.

公开(公告)号：US20200295375A1

公开(公告)日：2020-09-17

申请号：US16560071

申请日：2019-09-04

Applicant: Kabushiki Kaisha Toshiba

Inventor： Kazuomi YOSHIMA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M4/62 ,  H01M4/131 ,  H01M2/10 ,  H01M10/42 ,  H01M10/0525 ,  B60L7/10 ,  B60L50/64

Abstract: According to one embodiment, an electrode is provided. The electrode includes a current collector, an intermediate layer containing a material having electrical conductivity, and an active material-containing layer containing active material particles, in this order. The intermediate layer includes at least one opening and satisfies the following formula (1). 1≤S/r≤1700  (1) In formula (1) above, S is the ratio SB/SA of the total area SB of the at least one opening with respect to a unit area SA in the intermediate layer, and r is an average primary particle size of the active material particles.

公开(公告)号：US20190296394A1

公开(公告)日：2019-09-26

申请号：US16119447

申请日：2018-08-31

Applicant: Kabushiki Kaisha Toshiba

Inventor： Takuya IWASAKI ,  Norio TAKAMI ,  Yasuhiro HARADA

IPC: H01M10/0565 ,  H01M4/36 ,  H01M4/13 ,  H01M2/10

Abstract: A secondary battery includes a positive electrode, a negative electrode arranged opposite to the positive electrode, a composite electrolyte interposed between the positive electrode and the negative electrode, the composite electrolyte containing an organic electrolyte and at least one of inorganic compound particles and organic compound particles; and a fibrous substance existed in both of the composite electrolyte and at least one of the positive electrode and the negative electrode.

公开(公告)号：US20190288348A1

公开(公告)日：2019-09-19

申请号：US16122126

申请日：2018-09-05

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Infrastructure Systems & Solutions Corporation

Inventor： Taro FUKAYA ,  Takashi KISHI ,  Kazuki ISE ,  Kazuomi YOSHIMA ,  Yasunobu YAMASHITA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M10/44 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/66

Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a negative electrode. The negative electrode includes an active material composite. The active material composite includes active material particles and a layer covering at least a portion of surfaces of the active material particles. The active material particles include titanium-containing oxide particles. The layer contains N and Si. The layer includes a first surface facing the at least the portion of surfaces of the active material particles and a second surface defining a layer thickness from the first surface. An N concentration in the layer decreases from the first surface to the second surface. A Si concentration in the layer increases from the first surface to the second surface.