公开(公告)号：US20250167295A1

公开(公告)日：2025-05-22

申请号：US18841244

申请日：2022-09-28

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Tomoko NAKAMURA ,  Yuusuke YAMAGUCHI ,  Shota SUZUKI ,  Ayaka NAGATOMI

IPC: H01M10/0562 ,  H01M4/131 ,  H01M10/0525

Abstract: An all-solid-state battery according to the present embodiment includes a sintered body having a positive electrode, a negative electrode and a solid electrolyte layer that is between the positive electrode and the negative electrode, the positive electrode contains a compound having a spinel structure, the solid electrolyte layer contains a solid electrolyte having a γ-Li3PO4-type crystal structure, the compound having a spinel structure is represented by LiαMβMn2−βO4 . . . (1), and, in the formula (1), M is one or more atoms selected from transition metals, 0.8≤α≤1.2 is satisfied, and 0.1≤β≤0.9 is satisfied.

公开(公告)号：US20250167294A1

公开(公告)日：2025-05-22

申请号：US18841232

申请日：2022-09-28

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Tomoko NAKAMURA ,  Yuusuke YAMAGUCHI ,  Shota SUZUKI ,  Ayaka NAGATOMI

IPC: H01M10/0562 ,  H01M4/38

Abstract: An all-solid-state battery according to the present embodiment includes a sintered body having a positive electrode, a negative electrode and a solid electrolyte layer disposed between the positive electrode and the negative electrode, the solid electrolyte layer contains a solid electrolyte having a γ-Li3PO4-type crystal structure, and the negative electrode contains pure Ag or a Ag alloy and at least one compound of LiαTiO3 (2≤α≤2.8) and LiβTiSiO5 (2≤β≤4).

公开(公告)号：US20150333330A1

公开(公告)日：2015-11-19

申请号：US14707934

申请日：2015-05-08

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Tetsuya UENO ,  Ayaka HORIKAWA ,  Keitaro OTSUKI

IPC: H01M4/58 ,  H01M10/0562 ,  H01M10/0525

CPC classification number: H01M10/0562 ,  H01M2/1673 ,  H01M4/485 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2010/4292 ,  H01M2300/0071

Abstract: A lithium ion secondary battery including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer is provided. The positive electrode layer includes a positive electrode current collector layer and a positive electrode active material layer. Positive electrode active material layer includes a positive electrode active material. The negative electrode layer includes a negative electrode current collector layer and a negative electrode active material layer. The negative electrode active material layer includes a negative electrode active material. Solid electrolyte layer between the positive and negative electrode active material layers includes a solid electrolyte. At least one of a ratio of a particle diameter of the solid electrolyte to a particle diameter of the positive electrode active material and a ratio of the particle diameter of the solid electrolyte to a particle diameter of the negative electrode active material is in the range of 1/10 to 1/3.

Abstract translation: 提供了包括正极层，负极层和固体电解质层的锂离子二次电池。 正极层包括正极集电体层和正极活性物质层。 正极活性物质层包括正极活性物质。 负极层包括负极集电体层和负极活性物质层。 负极活性物质层包括负极活性物质。 正极和负极活性物质层之间的固体电解质层包括固体电解质。 固体电解质的粒径与正极活性物质的粒径的比例以及固体电解质的粒径与负极活性物质的粒径的比例中的至少一个为 1/10到1/3。

公开(公告)号：US20200031670A1

公开(公告)日：2020-01-30

申请号：US16337173

申请日：2017-09-25

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Masahiro OISHI ,  Taisuke MASUKO ,  Tomohiro YANO ,  Keiko TAKEUCHI

IPC: C01B25/45 ,  H01M10/0562

Abstract: A lithium ion-conducting solid electrolyte containing at least one metallic element selected from the group made of Zn, Ca, Mg, and Cu within a range of 0.01% by mass to 3.0% by mass, and a solid-state lithium ion rechargeable battery containing this lithium ion-conducting solid electrolyte.

公开(公告)号：US20200014070A1

公开(公告)日：2020-01-09

申请号：US16321783

申请日：2017-08-04

Applicant: TDK CORPORATION

Inventor： Masahiro OISHI ,  Hisaji OYAKE ,  Hiroshi SATO ,  Hiroko TAKAYANAGI ,  Gakuho ISOMICHI

IPC: H01M10/0585 ,  H01G11/56 ,  H01M10/0525 ,  H01M10/0562

Abstract: An electrochemical device has a laminated body including: a positive electrode; a negative electrode; and a solid electrolyte sandwiched between the positive electrode and the negative electrode, wherein the laminated body contains water, a content of the water contained in the laminated body is 0.001 mass % or more and less than 0.3 mass % with respect to the laminated body, a part of the water is a bound water bonding with a constituent of the laminated body, and a ratio of the bound water in the water is 50% or more and 90% or less.

公开(公告)号：US20190305306A1

公开(公告)日：2019-10-03

申请号：US16335609

申请日：2017-09-25

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Masahiro OISHI ,  Haruna KATO ,  Taisuke MASUKO ,  Tomohiro YANO

IPC: H01M4/36 ,  H01M4/131 ,  H01M10/0562 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525

Abstract: An all-solid lithium ion secondary battery includes a pair of electrodes and a solid electrolyte provided between the pair of electrodes. At least one of the pair of electrodes includes an active-material layer and an intermediate layer. An active material constituting the active-material layer has a core-shell structure which has a core region and a shell region and a composition of the intermediate layer is intermediate between the solid electrolyte and the shell region.

公开(公告)号：US20150333366A1

公开(公告)日：2015-11-19

申请号：US14707722

申请日：2015-05-08

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Tetsuya UENO ,  Ayaka HORIKAWA ,  Keitaro OTSUKI

IPC: H01M10/0525 ,  H01M4/66 ,  H01M4/38 ,  H01M4/58 ,  H01M10/0562 ,  H01M4/36

CPC classification number: H01M10/0562 ,  H01M4/136 ,  H01M4/362 ,  H01M4/38 ,  H01M4/5825 ,  H01M4/62 ,  H01M4/661 ,  H01M10/0525 ,  H01M2220/30 ,  H01M2300/0068

Abstract: A provided lithium ion secondary battery includes a pair of electrodes and a solid electrolyte layer. The solid electrolyte layer is provided between the pair of electrodes and includes titanium aluminum lithium phosphate. At least one of the pair of electrodes includes vanadium lithium phosphate. At least one of the pair of electrodes includes at least one constituent of titanium and aluminum. The amount of the at least one constituent existing on a side opposite to the solid electrolyte layer is smaller than the amount of the at least one constituent existing on the solid electrolyte layer side.

Abstract translation: 提供的锂离子二次电池包括一对电极和固体电解质层。 固体电解质层设置在该对电极之间，并且包括磷酸铝锂。 该对电极中的至少一个包括磷酸钒锂。 所述一对电极中的至少一个包括钛和铝的至少一种成分。 存在于与固体电解质层相反的一侧存在的至少一种成分的量小于固体电解质层侧存在的至少一种成分的量。

公开(公告)号：US20150333365A1

公开(公告)日：2015-11-19

申请号：US14707566

申请日：2015-05-08

Applicant: TDK CORPORATION

Inventor： Hiroshi SATO ,  Atsushi SANO

IPC: H01M10/0525 ,  H01M4/485 ,  H01M4/58 ,  H01M4/525 ,  H01M10/0562 ,  H01M4/505

CPC classification number: H01M4/485 ,  H01M4/13 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2220/30 ,  H01M2300/0068 ,  H01M2300/0071

Abstract: Provided is an all-solid lithium ion secondary battery including a sintered body including a solid electrolyte layer and a positive electrode layer and a negative electrode layer which are stacked alternately with the solid electrolyte layer interposed therebetween, wherein: the positive electrode layer, the negative electrode layer, and the solid electrolyte layer include a compound containing lithium and boron; and a content of lithium and boron contained in the compound to a total of a positive electrode active material included in the positive electrode layer, a negative electrode active material included in the negative electrode layer, and a solid electrolyte included in the solid electrolyte layer is respectively 4.38 mol % to 13.34 mol % in terms of Li2CO3 and 0.37 mol % to 1.11 mol % in terms of H3BO3.

Abstract translation: 提供一种全固体锂离子二次电池，其包括：固体电解质层和正极层和负极层的烧结体，其间与固体电解质层交替堆叠，其中：正极层，负极 电极层，固体电解质层包括含有锂和硼的化合物; 所述化合物中含有的锂和硼的含量与正极层中所含的正极活性物质的总量，负极层中所含的负极活性物质和固体电解质层中含有的固体电解质的比例为 分别以Li 2 CO 3为4.38mol％至13.34mol％，以H3BO3计为0.37mol％至1.11mol％。

公开(公告)号：US20250167293A1

公开(公告)日：2025-05-22

申请号：US18839482

申请日：2022-09-28

Applicant: TDK Corporation

Inventor： Hiroshi SATO ,  Tomoko NAKAMURA ,  Shota SUZUKI ,  Ayaka NAGATOMI

IPC: H01M10/0562 ,  H01M4/02 ,  H01M4/36 ,  H01M4/38 ,  H01M4/485 ,  H01M4/525

Abstract: An all-solid-state battery according to the present embodiment includes a sintered body having a positive electrode, a negative electrode and a solid electrolyte layer disposed between the positive electrode and the negative electrode, the solid electrolyte contains a solid electrolyte having a γ-Li3PO4-type crystal structure, and the negative electrode has a layer containing a metal composed of Ag or a Li—Ag alloy and a compound represented by LiαTi5O12 (4≤α≤7).

公开(公告)号：US20240222699A1

公开(公告)日：2024-07-04

申请号：US18567651

申请日：2022-06-29

Applicant: TDK CORPORATION

Inventor： Kazumasa TANAKA ,  Keitaro OTSUKI ,  Keiko TAKEUCHI ,  Hiroshi SATO

IPC: H01M10/0562 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01M10/0525

CPC classification number: H01M10/0562 ,  H01M4/133 ,  H01M4/134 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2300/0068

Abstract: This all-solid-state battery includes: a positive electrode including a positive electrode active material layer; a negative electrode including a negative electrode active material layer; and a solid electrolyte layer located between the positive electrode active material layer and the negative electrode active material layer. The negative electrode active material layer contains a titanium compound. The solid electrolyte layer contains an LAGP compound represented by Li1+xAlxGe2−x(PO4)3 (x is a number which satisfies 0