公开(公告)号：US20220021005A1

公开(公告)日：2022-01-20

申请号：US17324577

申请日：2021-05-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NOBUHIRO MIYATA ,  HARUHIKO SHINTANI ,  TOMOKATSU WADA

IPC: H01M4/86 ,  H01M4/90 ,  B01J35/10

Abstract: An electrode catalyst for a fuel battery includes a mesoporous material and catalyst metal particles supported at least in the mesoporous material. In the electrode catalyst for a fuel battery, before supporting the catalyst metal particles, the mesoporous material has mesopores having a mode radius of greater than or equal to 1 nm and less than or equal to 25 nm and has a value of greater than 0.90, the value being determined by dividing a specific surface area S1-25 (m2/g) of the mesopores obtained by analyzing a nitrogen adsorption-desorption isotherm according to a BJH method, the mesopores having a radius of greater than or equal to 1 nm and less than or equal to 25 nm, by a BET specific surface area (m2/g) evaluated according to a BET method.

公开(公告)号：US20230395819A1

公开(公告)日：2023-12-07

申请号：US18453346

申请日：2023-08-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： NOBUHIRO MIYATA ,  HARUHIKO SHINTANI

IPC: H01M4/92 ,  H01M12/06

CPC classification number: H01M4/926 ,  H01M12/06 ,  H01M2300/0082

Abstract: An electrode catalyst according to the present disclosure includes a mesoporous material and catalyst metal particles which are supported in at least an inner portion of the mesoporous material and which contain platinum and a metal different from platinum. The mesoporous material has mesopores having a mode radius of greater than or equal to 1 nm and less than or equal to 25 nm and a pore volume of greater than or equal to 1.0 cm3/g and less than or equal to 3.0 cm3/g. The catalyst metal particles which are supported have an L10 structure. The proportion of the L10 structure is greater than 0.25.

公开(公告)号：US20210242471A1

公开(公告)日：2021-08-05

申请号：US17232385

申请日：2021-04-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HARUHIKO SHINTANI ,  NOBUHIRO MIYATA ,  TOMOKATSU WADA

IPC: H01M4/92 ,  B01J21/18 ,  B01J23/75 ,  B01J23/42 ,  H01M8/1004 ,  H01M8/1067 ,  B01J37/02 ,  B01J35/10 ,  B01J35/02 ,  B01J37/16 ,  B01J37/08

Abstract: A catalyst includes a mesoporous material and catalytic metal particles supported at least within the mesoporous material and containing platinum and a metal different from platinum. The mesoporous material has mesopores with a mode radius of 1 to 25 nm and a pore volume of 1.0 to 3.0 cm3/g before supporting of the catalytic metal particles, and has an average particle size of greater than or equal to 200 nm. A molar ratio of the metal different from platinum and contained in the catalytic metal particles relative to all metals contained in the catalytic metal particles is greater than or equal to 0.25, and among the catalytic metal particles, a volume ratio of catalytic metal particles having a particle size of greater than or equal to 20 nm is less than or equal to 10%.

公开(公告)号：US20220302468A1

公开(公告)日：2022-09-22

申请号：US17805700

申请日：2022-06-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： RYO KODA ,  HARUHIKO SHINTANI

IPC: H01M4/96 ,  H01M8/1004 ,  H01M4/86 ,  H01M4/90

Abstract: An electrode catalyst for an electrochemical device, the electrode catalyst including: mesoporous carbon particles having an average crystallite size along a 002 plane of greater than or equal to 1.6 nm and less than or equal to 3.4 nm; and catalyst metal particles supported on the mesoporous carbon particles. The mesoporous carbon particles have an average particle diameter of primary particles of greater than or equal to 500 nm.

公开(公告)号：US20180301726A1

公开(公告)日：2018-10-18

申请号：US15939400

申请日：2018-03-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HARUHIKO SHINTANI ,  YUSUKE FUJITA

IPC: H01M8/1004 ,  H01M8/1039 ,  H01M4/88 ,  H01M4/92 ,  H01M4/86 ,  B82Y30/00

Abstract: An electrode catalyst layer of an electrochemical device is an electrode catalyst layer of an electrochemical device, the electrode catalyst layer including a mesoporous carbon; a catalyst metal supported at least in the mesoporous carbon; and an ionomer. Before supporting the catalyst metal, the mesoporous carbon has mesopores with a mode radius of 1 nm to 25 nm and a pore volume of 1.0 cm3/g to 3.0 cm3/g and has an average particle diameter of 200 nm or more.