公开(公告)号：US20240116759A1

公开(公告)日：2024-04-11

申请号：US18273283

申请日：2022-02-03

Applicant: NIPPON ELECTRIC GLASS CO., LTD. ,  NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY

Inventor： Tsuyoshi HONMA ,  Masafumi HIRATSUKA ,  Hideo YAMAUCHI ,  Ayumu TANAKA ,  Kei TSUNODA ,  Yoshinori YAMAZAKI

IPC: C01B25/45 ,  C01D15/02 ,  H01M4/58

CPC classification number: C01B25/45 ,  C01D15/02 ,  H01M4/5825 ,  C01P2002/72 ,  C01P2004/61 ,  C01P2006/40 ,  H01M10/054

Abstract: Provided is a method for producing a positive electrode active material for an alkali ion secondary battery, the positive electrode active material containing a large amount of a transition metal and enabling operation of the battery. In the method for producing a positive electrode active material for an alkali ion secondary battery, in which the positive electrode active material contains 34 mol % or more of CrO+FeO+MnO+CoO+NiO, the method includes: a step of preparing a positive electrode active material precursor containing crystals; and a step of irradiating the positive electrode active material precursor with light to melt the crystals and amorphize at least a portion of the positive electrode active material precursor.

公开(公告)号：US20220285688A1

公开(公告)日：2022-09-08

申请号：US17636628

申请日：2020-09-10

Applicant: NIPPON ELECTRIC GLASS CO., LTD.

Inventor： Kei TSUNODA ,  Hideo YAMAUCHI

IPC: H01M4/62 ,  H01M4/04 ,  H01M10/0525

Abstract: Provided is a secondary cell electrode capable of achieving excellent charge and discharge capacities. A secondary cell electrode contains an electrode active material powder and an organic binder and emits fluorescence in Raman spectrometry with a wavelength of 532 nm.

公开(公告)号：US20250006922A1

公开(公告)日：2025-01-02

申请号：US18708330

申请日：2022-11-22

Applicant: NIPPON ELECTRIC GLASS CO., LTD. ,  NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Inventor： Kei TSUNODA ,  Ayumu TANAKA ,  Hideo YAMAUCHI ,  Taichi SAKAMOTO ,  Yuta IKEUCHI ,  Takashi MUKAI ,  Hiroshi SENOH

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/583 ,  H01M10/054 ,  H01M10/0565 ,  H01M10/0566

Abstract: Provided is a sodium-ion secondary battery having a high capacity and excellent safety. A sodium-ion secondary battery includes: a positive electrode containing a positive-electrode active material made of a crystallized glass containing crystals represented by a general formula NaxMyP2Oz (where 1≤x≤2.8, 0.95≤y≤1.6, 6.5≤z≤8, and M is at least one selected from among Fe, Ni, Co, Mn, and Cr); a negative electrode containing a negative-electrode active material made of hard carbon; and a non-aqueous electrolyte.

公开(公告)号：US20220393232A1

公开(公告)日：2022-12-08

申请号：US17775405

申请日：2020-12-07

Applicant: NIPPON ELECTRIC GLASS CO., LTD.

Inventor： Hideo YAMAUCHI ,  Kei TSUNODA ,  Masaaki KADOMI ,  Yoshinori YAMAZAKI

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/40

Abstract: Provided is a member for an electricity storage device and an electricity storage device in each of which alkali metal ions are used as carrier ions and which can improve charge/discharge characteristics. A member for an electricity storage device includes: a solid electrolyte layer 2 containing an alkali metal ion-conducting solid electrolyte; an alkali metal layer 3 laid on the solid electrolyte layer 2 and containing an alkali metal; and an electrode layer laid on the alkali metal layer 3 and containing a material capable of absorbing and releasing alkali metal ions.

公开(公告)号：US20250062344A1

公开(公告)日：2025-02-20

申请号：US18721290

申请日：2022-12-16

Applicant: NIPPON ELECTRIC GLASS CO., LTD.

Inventor： Kei TSUNODA ,  Hideo YAMAUCHI

IPC: H01M4/58 ,  C03C4/14 ,  C03C10/00 ,  H01M4/02 ,  H01M10/054 ,  H01M10/0562

Abstract: Provided is a novel positive-electrode active material for a sodium-ion secondary battery having an excellent discharge capacity. A positive-electrode active material for a sodium-ion secondary battery is made of a crystallized glass containing crystals represented by a general formula Nax(Ni1−a−bMaM′b)yP2Oz (where M and M′ are transition metal elements different from each other and each at least one transition metal element selected from the group consisting of Co, Mn, Cr, Fe, and Ti, and 0.6≤x≤4, 0.3≤y≤2.7, 6≤z≤7.5, 0

公开(公告)号：US20220407045A1

公开(公告)日：2022-12-22

申请号：US17775407

申请日：2020-12-07

Applicant: NIPPON ELECTRIC GLASS CO., LTD.

Inventor： Ayumu TANAKA ,  Junichi IKEJIRI ,  Kei TSUNODA ,  Hideo YAMAUCHI

IPC: H01M4/04

Abstract: Provided is a member for a power storage device that, even when the amount of electrode active material supported is increased, enables charge and discharge and thus achieves a high capacity. A member 6 for a power storage device includes: a solid electrolyte layer 1; and an electrode layer 2 provided on the solid electrolyte layer 1 and made of a sintered body of an electrode material layer 2A containing an electrode active material precursor powder having an average particle diameter of not less than 0.01 μm and less than 0.7 μm.

公开(公告)号：US20220344631A1

公开(公告)日：2022-10-27

申请号：US17636630

申请日：2020-09-14

Applicant: NIPPON ELECTRIC GLASS CO., LTD.

Inventor： Ayumu TANAKA ,  Hideo YAMAUCHI ,  Junichi IKEJIRI ,  Kei TSUNODA

IPC: H01M4/04 ,  H01M10/0562 ,  H01M4/62 ,  H01M4/48

Abstract: The present invention provides a method for manufacturing a positive electrode material for an electricity storage device that can reduce excessive reactions between particles of a positive electrode active material precursor powder and between the positive electrode active material precursor powder and a solid electrolyte during thermal treatment to achieve excellent charge and discharge characteristics. A method for manufacturing a positive electrode material for an electricity storage device includes the step of subjecting a raw material containing a positive electrode active material precursor powder made of an amorphous oxide material to thermal treatment, wherein the positive electrode active material precursor powder has a crystallization temperature of 490° C. or lower.

公开(公告)号：US20230369564A1

公开(公告)日：2023-11-16

申请号：US18029231

申请日：2021-09-03

Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY ,  Nippon Electric Glass Co., Ltd.

Inventor： Taichi SAKAMOTO ,  Yuta IKEUCHI ,  Takashi MUKAI ,  Hiroshi SENOH ,  Hideaki TANAKA ,  Masahiro YANAGIDA ,  Hideo YAMAUCHI, I ,  Junichi IKEJIRI ,  Kei TSUNODA ,  Ayumu TANAKA ,  Fumio SATO

IPC: H01M4/36 ,  H01M4/62 ,  H01M4/58

CPC classification number: H01M4/364 ,  H01M4/625 ,  H01M4/626 ,  H01M4/5825 ,  H01M2004/021

Abstract: Provided is an electrode mixture used for an all-solid-state sodium storage battery that can maintain a high discharging capacity in a room temperature environment and exhibit excellent charge-discharge cycle characteristics. Further provided is a storage battery comprising the same. An object of the present invention is to provide an electrode mixture used for an all-solid-state sodium storage battery, the electrode mixture comprising an active material, wherein the active material is a cluster formed of polyphosphate acid transition metal oxide with a plurality of individual particles connected together, each particle having a particle size within the range of 0.1 μm to 100 μm.

公开(公告)号：US20230216021A1

公开(公告)日：2023-07-06

申请号：US17928300

申请日：2021-07-02

Applicant: NIPPON ELECTRIC GLASS CO., LTD.

Inventor： Kei TSUNODA ,  Ayumu TANAKA ,  Hideo YAMAUCHI

IPC: H01M4/1393 ,  H01M4/04 ,  H01M10/0562 ,  H01M4/133 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/1393 ,  H01M4/0471 ,  H01M10/0562 ,  H01M4/133 ,  H01M4/625 ,  H01M10/0525 ,  H01M2300/0077 ,  H01M2004/027

Abstract: Provided is a sintered body electrode, a battery member, and sintered body electrode and battery member manufacturing methods all of which can increase the safety and operate a battery at low temperatures. A sintered body electrode 3 according to the present invention contains: a carbon electrode material made of graphite or hard carbon; and an alkali-ion conductive solid electrolyte.

公开(公告)号：US20210066757A1

公开(公告)日：2021-03-04

申请号：US16644570

申请日：2018-10-03

Applicant: NIPPON ELECTRIC GLASS CO., LTD.

Inventor： Hideo YAMAUCHI ,  Kei TSUNODA

IPC: H01M10/0585 ,  H01M10/054 ,  H01M10/0562 ,  H01M4/66

Abstract: Provided is a bipolar all-solid-state sodium ion secondary battery that can increase the voltage without impairing safety. A bipolar all-solid-state sodium ion secondary battery includes: a plurality of all-solid-state sodium ion secondary batteries 1 in each of which a positive electrode layer 3 capable of absorbing and releasing sodium, a solid electrolyte layer 4 made of a sodium ion-conductive oxide, and a negative electrode layer 5 capable of absorbing and releasing sodium are laid one upon another in this order; and a current collector layer 2 provided between the positive electrode layer 3 of each of the plurality of all-solid-state sodium ion secondary batteries 1 and the negative electrode layer 5 of the adjacent all-solid-state sodium ion secondary battery 1 and shared by the positive electrode layer 3 and the negative electrode layer 5.