公开(公告)号：US11594783B2

公开(公告)日：2023-02-28

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: H01M50/431 ,  H01M50/20 ,  H01M4/485 ,  H01M4/66 ,  H01M10/054 ,  H01M10/0562 ,  H01M10/24 ,  H01M10/42

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：US11316153B2

公开(公告)日：2022-04-26

申请号：US16804268

申请日：2020-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuki Ise ,  Yasunobu Yamashita ,  Kazuomi Yoshima ,  Shinsuke Matsuno ,  Norio Takami ,  Hiroki Inagaki

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M10/052 ,  H01M10/42 ,  H01M4/02

Abstract: According to one embodiment, provided is a lithium zinc secondary battery including a positive electrode, a negative electrode, an aqueous electrolyte, and a separator between the positive electrode and the negative electrode. The negative electrode includes a zinc-including metal body and an oxide on at least a part of a surface of the metal body. The aqueous electrolyte includes zinc and a lithium salt. Zinc is dissolved and deposited at the negative electrode. Lithium is inserted and extracted from the oxide in a range of −1.4 V (vs. SCE) or more and −1.0 V (vs. SCE) or less. A specific surface area of the oxide is 10 m2/g or more and 350 m2/g or less. A mol concentration ratio Zn/Li between zinc and lithium in the aqueous electrolyte is 1.0×10−5 or more and 0.3 or less.

公开(公告)号：US11251436B2

公开(公告)日：2022-02-15

申请号：US16778026

申请日：2020-01-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuyuki Hotta ,  Shinsuke Matsuno ,  Norio Takami

IPC: H01M4/66 ,  H01M10/0525 ,  H01M10/42 ,  B60L50/61 ,  H01M50/20 ,  H01M4/02

Abstract: According to one embodiment, there is provided a secondary battery including a positive electrode, a negative electrode, and an aqueous electrolyte. The positive electrode includes a positive electrode active material. The negative electrode includes a negative electrode active material and an additive resin containing a hydroxyl group unit and a first unit. The first unit consists of at least one of a butyral unit and an acetal unit. A content ratio of a content of the first unit contained in the additive resin to a content of the hydroxyl group unit contained in the additive resin is in a range of 1.2 to 18.

公开(公告)号：US11139465B2

公开(公告)日：2021-10-05

申请号：US16655771

申请日：2019-10-17

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Shinsuke Matsuno ,  Hidesato Saruwatari ,  Dai Yamamoto ,  Asato Kondo ,  Hiromichi Kuriyama ,  Hideki Satake ,  Takashi Kuboki

IPC: H01M4/133 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/485 ,  H01M4/62 ,  H01M10/052 ,  H01M4/02

Abstract: According to one embodiment, there is provided a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode including a negative electrode active material layer, and a non-aqueous electrolyte. The negative electrode active material layer contains carbon dioxide and releases the carbon dioxide in the range of 0.1 ml to 5 ml per 1 g when heated at 200° C. for 1 minute.

公开(公告)号：US11018377B2

公开(公告)日：2021-05-25

申请号：US15907741

申请日：2018-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuomi Yoshima ,  Shinsuke Matsuno

IPC: H01M4/00 ,  H01M10/38 ,  H01M4/485 ,  H01M10/42 ,  H01M10/46 ,  H01M4/525 ,  H01M4/58 ,  H01M4/48 ,  H02J7/14 ,  H01M4/505 ,  B60L53/00 ,  H01M4/62 ,  H01M10/36 ,  B60L50/64 ,  B60L58/21 ,  H01M50/20 ,  B60L7/10 ,  H01M4/02

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：US10790543B2

公开(公告)日：2020-09-29

申请号：US16119782

申请日：2018-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuyuki Hotta ,  Shinsuke Matsuno ,  Norio Takami

IPC: H01M4/02 ,  H01M10/0565 ,  H01M10/42 ,  H01M10/0525 ,  H01M2/16 ,  H01M10/0585 ,  B60L58/10

Abstract: According to one embodiment, a secondary battery is provided. The separator includes a porous self-supporting film, a solid electrolyte layer, and a first binder. The solid electrolyte layer is provided on one main surface of the porous self-supporting film. The porous self-supported film and the solid electrolyte layer are adhered with the first binder. The first binder exists on both of the one main surface and another main surface of the porous self-supporting film. The solid electrolyte layer includes solid electrolyte particles and a second binder. The solid electrolyte particles have alkali metal ions conductivity. The polymeric material of the second bonder is a same as the polymeric material of the first material.

公开(公告)号：US10283747B2

公开(公告)日：2019-05-07

申请号：US15125513

申请日：2014-03-17

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yoshiyuki Isozaki ,  Norio Takami ,  Shinsuke Matsuno ,  Keigo Hoshina ,  Yuma Kikuchi

IPC: H01M2/16 ,  H01M4/48 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/058 ,  H01M4/58

Abstract: A nonaqueous electrolyte secondary battery of the present invention includes a positive electrode containing olivine-structured Fe or a Mn-containing phosphorus compound as a positive electrode active material; a negative electrode containing a titanium-containing metal oxide capable of inserting and extracting lithium ions as a negative electrode active material; a nonwoven fabric separator, which contains an electrically insulating fiber and is bonded to a surface of at least one of the positive electrode and the negative electrode; and a nonaqueous electrolyte. In a thickness direction of the nonwoven fabric separator, a density of the fiber on a side having contact with the positive electrode is high, and a density of the fiber on a side having contact with the negative electrode is low.

公开(公告)号：US20190089011A1

公开(公告)日：2019-03-21

申请号：US15908330

申请日：2018-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hayato SEKI ,  Kazuomi Yoshima ,  Shinsuke Matsuno ,  Norio Takami

IPC: H01M10/38 ,  H01M2/10 ,  H01M10/42 ,  B60L11/18

Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a negative electrode, a positive electrode, a first aqueous electrolyte, a second aqueous electrolyte, and a partition having a first surface and a second surface opposite to the first surface. The partition is positioned between the negative electrode and the positive electrode. The first aqueous electrolyte is in contact with the first surface of the partition and the negative electrode. The second aqueous electrolyte is in contact with the second surface of the partition and the positive electrode. The partition contains a solid electrolyte having alkali metal ion conductivity. The first aqueous electrolyte includes an organic compound.

公开(公告)号：US20180083286A1

公开(公告)日：2018-03-22

申请号：US15445057

申请日：2017-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuki ISE ,  Yasunobu Yamashita ,  Shinsuke Matsuno ,  Norio Takami ,  Hiroki Inagaki

IPC: H01M4/66 ,  H01M4/485 ,  H01M4/505 ,  H01M4/62 ,  H01M10/36 ,  H01M10/42 ,  H01M2/30 ,  H01M4/04 ,  B60L11/18

CPC classification number: H01M4/667 ,  B60L11/1851 ,  H01M2/305 ,  H01M4/0404 ,  H01M4/0442 ,  H01M4/38 ,  H01M4/48 ,  H01M4/485 ,  H01M4/505 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M4/664 ,  H01M10/36 ,  H01M10/425 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/0002

Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, and an electrolyte including a water-containing solvent and a lithium ion. The negative electrode includes an aluminum-containing negative electrode current collector and a boehmite-containing cover layer, and the boehmite-containing cover layer is provided on at least a part of a surface of the negative electrode current collector, and has a thickness of 10 nm to 1000 nm.

公开(公告)号：US09537145B2

公开(公告)日：2017-01-03

申请号：US14855604

申请日：2015-09-16

Applicant: Kabushiki Kaisha Toshiba

Inventor： Norikazu Osada ,  Takashi Kuboki ,  Shinsuke Matsuno

IPC: H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/485 ,  H01M4/587 ,  H01M4/13 ,  H01M4/48 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M4/13 ,  H01M4/386 ,  H01M4/483 ,  H01M4/587 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021

Abstract: A negative electrode for a nonaqueous electrolyte secondary battery of the embodiment includes a current collector; and an electrode mixture layer that is formed on the current collector and contains a first particle, a second particle and a binder. The first particle is comprised of silicon, a silicon oxide and a carbonaceous material. The second particle has electron conductivity and an oxygen content of 1% or lower. The electrode mixture layer is characterized in that silicon concentrations in the vicinity of the surface having contact with the current collector and the vicinity of the opposite surface to the surface having contact with the current collector are higher than a silicon concentration at the central part in the thickness direction.

Abstract translation: 本实施方式的非水电解质二次电池用负极包括集电体， 以及形成在集电体上并含有第一颗粒，第二颗粒和粘合剂的电极混合物层。 第一颗粒由硅，氧化硅和碳质材料构成。 第二颗粒具有电子传导性，氧含量为1％以下。 电极混合层的特征在于，与集电体接触的表面附近的硅浓度与与集电体接触的表面的相反表面附近的硅浓度高于在集电体的中心部分的硅浓度 厚度方向。