公开(公告)号：US20160285081A1

公开(公告)日：2016-09-29

申请号：US15075653

申请日：2016-03-21

Applicant: Kabushiki Kaisha Toshiba

Inventor： Shinsuke MATSUNO ,  Norikazu OSADA ,  Sara YOSHIO ,  Takashi KUBOKI

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/587 ,  H01M4/38 ,  H01M4/131 ,  H01M4/48 ,  H01M10/0525 ,  H01M4/134

CPC classification number: H01M4/364 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/366 ,  H01M4/386 ,  H01M4/485 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027 ,  Y02T10/7011

Abstract: A negative electrode for a nonaqueous electrolyte secondary battery of the embodiment includes: a negative electrode current collector; and a negative electrode active material layer which includes a negative electrode active material and is formed on the negative electrode current collector. The negative electrode active material layer includes silicon capable of reacting with lithium. The negative electrode active material layer includes a 1st layer containing an oxidized silicon compound and a 2nd layer containing the oxidized silicon compound. The 2nd layer has the smaller amount of the oxidized silicon compound than the 1st layer. The 2nd layer is provided on the surface of the negative electrode current collector.

Abstract translation: 本实施方式的非水电解质二次电池用负极包括：负极集电体; 以及包含负极活性物质并形成在负极集电体上的负极活性物质层。 负极活性物质层包括能与锂反应的硅。 负极活性物质层包括含有氧化硅化合物的第1层和含有氧化硅化合物的第2层。 第二层的氧化硅化合物的量比第一层少。 第二层设置在负极集电体的表面上。

公开(公告)号：US20240097476A1

公开(公告)日：2024-03-21

申请号：US18175616

申请日：2023-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Keigo HOSHINA ,  Hayato SEKI ,  Shinsuke MATSUNO ,  Norio TAKAMI

IPC: H02J7/00 ,  H01M10/42 ,  H01M10/44

CPC classification number: H02J7/007182 ,  H01M10/4257 ,  H01M10/441 ,  H02J7/0014 ,  H02J7/0047 ,  H01M2010/4271 ,  H01M2300/0002

Abstract: In one embodiment, there is provided a charging method of a battery pack in which a plurality of aqueous battery cells are electrically connected in series. In this charging method, in a case where the battery pack reaches a reference voltage by a constant-current charging at a first charging rate, constant-current charging is performed on the battery pack at the second charging rate lower than the first charging rate and being from 0.01 C or more to 0.05 C or less. Then, this constant-current charging at the second charging rate is continued until a charged electric charge amount from a start timing of the constant-current charging at the second charging rate reaches a reference electric charge amount set from 1% or more to 5% or less of the nominal capacity of the battery pack.

公开(公告)号：US20230088781A1

公开(公告)日：2023-03-23

申请号：US17651681

申请日：2022-02-18

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Keigo HOSHINA ,  Yasuyuki HOTTA ,  Kazuomi YOSHIMA ,  Shinsuke MATSUNO ,  Norio TAKAMI

IPC: H01M50/534 ,  H01M4/485 ,  H01M4/66

Abstract: According to one embodiment, a secondary battery includes positive electrodes, negative electrodes, a separator, a positive electrode lead, a negative electrode lead, and an aqueous electrolyte. The positive electrodes each include a positive electrode current collector and a positive electrode tab. The positive electrode current collector includes a first polymeric material. The negative electrodes each include a negative electrode current collector and a negative electrode tab. The negative electrode current collector includes a second polymeric material. At least a portion of the positive electrode tab is in direct contact with the positive electrode lead. At least a portion of the negative electrode tab is in direct contact with the negative electrode lead.

公开(公告)号：US20230024211A1

公开(公告)日：2023-01-26

申请号：US17650547

申请日：2022-02-10

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hayato SEKI ,  Takashi KUBOKI ,  Shinsuke MATSUNO

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/38

Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes: a positive electrode containing a positive electrode active material; a negative electrode; a separator arranged between the positive electrode and the negative electrode; and a first aqueous electrolyte held in at least the positive electrode. pH of the first aqueous electrolyte is more than 7. The positive electrode active material contains a lithium-containing compound that exhibits an average operating potential of less than 4.0 V based on lithium metal.

公开(公告)号：US20220085366A1

公开(公告)日：2022-03-17

申请号：US17249354

申请日：2021-02-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yumiko SEKIGUCHI ,  Yasuyuki HOTTA ,  Shinsuke MATSUNO

IPC: H01M4/485 ,  H01M10/42 ,  H01M50/46 ,  H01M50/451

Abstract: According to one embodiment, provided is a secondary battery including a negative electrode containing a titanium-containing oxide, a positive electrode, a separator between the negative electrode and the positive electrode, a first aqueous electrolyte, a second aqueous electrolyte, and a third aqueous electrolyte. The first aqueous electrolyte is held in the negative electrode and contains 0.001% by mass to 0.5% by mass of zinc ions. The second aqueous electrolyte is held in the separator and contains 1% by mass to 5% by mass of a first compound that includes a hydrophobic portion and a hydrophilic portion. The third aqueous electrolyte is held in the positive electrode.

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：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：US20210091358A1

公开(公告)日：2021-03-25

申请号：US16883331

申请日：2020-05-26

Applicant: Kabushiki Kaisha Toshiba

Inventor： Wataru UNO ,  Yasuyuki HOTTA ,  Shinsuke MATSUNO ,  Norio TAKAMI

IPC: H01M2/16

Abstract: A separator includes an inorganic particle layer including an inorganic particle, a polymeric binder and a fiber substance. A mass ratio of the fiber substance with respect to a total mass of the inorganic particle, the polymeric binder and the fiber substance is 0.1 mass % or more and 40 mass % or less.

公开(公告)号：US20190089009A1

公开(公告)日：2019-03-21

申请号：US15907741

申请日：2018-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuomi YOSHIMA ,  Shinsuke MATSUNO

IPC: H01M10/38 ,  H01M4/505 ,  H01M4/485 ,  H01M2/10 ,  H01M10/42 ,  H01M10/46 ,  H01M4/525 ,  H01M4/58 ,  H01M4/48 ,  H02J7/14 ,  B60L11/18

Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, an aqueous electrolyte, a separator, and a negative electrode including a negative electrode active material-containing layer. The negative electrode active material-containing layer includes negative electrode active material particles and solid electrolyte particles having lithium ion conductivity. The porosity of the negative electrode active material-containing layer is within a range of 0.1% to 28%. The water content of the negative electrode active material-containing layer is within a range of 0.01 g/cm3 to 0.4 g/cm3.

公开(公告)号：US20180269537A1

公开(公告)日：2018-09-20

申请号：US15692334

申请日：2017-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuomi YOSHIMA ,  Shinsuke MATSUNO ,  Norio TAKAMI

IPC: H01M10/42 ,  H01M2/10 ,  H01M10/0585

CPC classification number: H01M10/4257 ,  H01M2/1072 ,  H01M4/02 ,  H01M10/0585 ,  H01M10/36 ,  H01M2220/20 ,  H01M2300/0002 ,  H01M2300/0085

Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, and an aqueous electrolyte. The aqueous electrolyte includes a first aqueous electrolyte and a second aqueous electrolyte. The first aqueous electrolyte is in contact with at least part of the positive electrode and contains lithium ions. The second aqueous electrolyte is in contact with at least part of the negative electrode and contains lithium ions. The concentration of lithium ions contained in the second aqueous electrolyte is higher than the concentration of lithium ions contained in the first aqueous electrolyte.