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：US20220085638A1

公开(公告)日：2022-03-17

申请号：US17186054

申请日：2021-02-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tomoko SUGIZAKI ,  Tomoe KUSAMA ,  Yuta KANAI ,  Keigo HOSHINA ,  Tetsuya SASAKAWA ,  Ryosuke YAGI ,  Yasuhiro HARADA ,  Norio TAKAMI

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

Abstract: According to one embodiment, a storage battery includes one or more first batteries that include a first active material as a negative electrode active material, and one or more second batteries that include a second active material having an operation electric potential lower than that of the first active material as a negative electrode active material. Charge and the discharge of the second batteries are stopped based on a fact that a temperature of the storage battery is lower than a temperature threshold. The second batteries are caused to charge or discharge based on a fact that the temperature of the storage battery is equal to or higher than the temperature threshold.

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：US20210296631A1

公开(公告)日：2021-09-23

申请号：US17007147

申请日：2020-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Keigo HOSHINA ,  Wen ZHANG ,  Tetsuya SASAKAWA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M4/131 ,  H01M4/134 ,  H01M4/583 ,  H01M2/10 ,  H01M10/0525

Abstract: According to one embodiment, provided is a secondary battery including a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a niobium-titanium composite oxide having fluorine atoms on at least part of a surface the niobium-titanium composite oxide. An abundance ratio AF of fluorine atoms, an abundance ratio ATi of titanium atoms, and an abundance ratio ANb of niobium atoms on a surface of the negative electrode according to X-ray photoelectron spectroscopy satisfy a relationship of 3.5≤AF/(ATi+ANb)≤50.

公开(公告)号：US20160036040A1

公开(公告)日：2016-02-04

申请号：US14660089

申请日：2015-03-17

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Norio TAKAMI ,  Yoshiyuki ISOZAKI ,  Tetsuya SASAKAWA ,  Hidesato SARUWATARI

IPC: H01M4/131 ,  H01M4/485

CPC classification number: H01M4/131 ,  H01M2/0277 ,  H01M2/0285 ,  H01M2/0287 ,  H01M4/485 ,  H01M4/525 ,  H01M4/661 ,  H01M4/662 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2010/4292 ,  H01M2220/20 ,  Y02T10/7011

Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a nonaqueous electrolyte, a positive electrode and a negative electrode. The positive electrode includes a positive electrode current collector containing Al, and a positive electrode active material containing layer. The negative electrode includes a negative electrode current collector containing Al, and a negative electrode active material containing layer. The negative electrode active material containing layer includes titanium-containing oxide particles having an average secondary particle size of more than 5 μm. The nonaqueous electrolyte battery satisfies a formula (1) of Lp

Abstract translation: 根据一个实施方式，提供一种非水电解质电池，包括非水电解质，正极和负极。 正极包括含有Al的正极集电体和含有正极活性物质的层。 负极包括含有Al的负极集电体和负极活性物质含有层。 负极活性物质含有层包括平均二次粒径大于5μm的含钛氧化物粒子。 非水电解质电池满足Lp

公开(公告)号：US20250038257A1

公开(公告)日：2025-01-30

申请号：US18442196

申请日：2024-02-15

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/04 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0568

Abstract: In general, according to one embodiment, a secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte is provided. The positive electrode includes a positive electrode mixture layer containing a positive electrode active material and sulfur atoms. A mass of sulfur atoms per unit volume of the positive electrode mixture layer is 430 g/m3 or less. The nonaqueous electrolyte contains propanesultone and lithium difluorophosphate. A concentration of the propanesultone in the nonaqueous electrolyte is 0.5% by mass or more. A concentration of the lithium difluorophosphate in the nonaqueous electrolyte is 0.2% by mass or more.

公开(公告)号：US20240088345A1

公开(公告)日：2024-03-14

申请号：US18172292

申请日：2023-02-21

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: H01M4/04 ,  H01M10/04

CPC classification number: H01M4/0435 ,  H01M10/0404

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 a pair 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, between the rolling unit and the pulling unit, a pair of holding members are brought into contact with the uncoated region from opposite sides in a thickness direction of the belt-like member to which the tension is applied, thereby holding the uncoated region between the holding members.

公开(公告)号：US20220293915A1

公开(公告)日：2022-09-15

申请号：US17462507

申请日：2021-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasunobu YAMASHITA ,  Tetsuya SASAKAWA ,  Yasuhiro HARADA ,  Norio TAKAMI ,  Shinsuke MATSUNO

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/485 ,  H01M50/249 ,  H01M4/131 ,  B60L50/64

Abstract: According to an embodiment, an electrode group is provided. The electrode group includes a positive electrode, and a negative electrode. The negative electrode active material-containing layer includes a facing section which faces the positive electrode active material-containing layer and a non-facing section which does not. A first fluorine-containing coating is formed on a main surface of the negative electrode active material-containing layer in at least a part of the non-facing section. The abundance ratio of fluorine atoms included in the first fluorine-containing coating is in the range of 2.5 atom % to 10 atom %.

公开(公告)号：US20220085456A1

公开(公告)日：2022-03-17

申请号：US17179480

申请日：2021-02-19

Applicant: KABUSHIKI KAISHA TOSHIBA

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

IPC: H01M50/46 ,  H01M10/0565 ,  H01M10/42 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525

Abstract: According to one embodiment, an electrode group is provided. The electrode group includes a positive electrode, a negative electrode, and a gel polymer layer interposed between the positive electrode and the negative electrode. At least a part of the negative electrode is opposed to the positive electrode. The gel polymer layer is formed of a gel electrolyte composed of a polymer material, an organic solvent and a lithium salt, and a sheet base member which supports the gel electrolyte, or the gel polymer layer is formed of only the gel electrolyte.

公开(公告)号：US20210083297A1

公开(公告)日：2021-03-18

申请号：US16804546

申请日：2020-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yuta KANAI ,  Tetsuya SASAKAWA ,  Keigo HOSHINA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M4/66 ,  H01M4/131 ,  H01M10/42 ,  H01M2/10 ,  B60W30/18

Abstract: According to one embodiment, an electrode is provided. The electrode includes the active material-containing layer formed on the current collector and including active material particles. The particle size distribution chart obtained by the laser diffraction scattering method for the active material particles includes the first region and the second region. The first particle group included in the first region includes the first active material particles, and the second particle group included in the second region includes second active material particles. The carbon coverage of the first particle group is higher than the carbon coverage of the second particle group.