公开(公告)号：US20240220843A1

公开(公告)日：2024-07-04

申请号：US18556941

申请日：2022-06-07

Applicant: SHOWA DENKO K.K.

Inventor： Suguru SAKAGUCHI ,  Yoshishige OKUNO

IPC: G06N10/60 ,  G06F17/11

CPC classification number: G06N10/60 ,  G06F17/11

Abstract: An information processing system includes an annealing computing device, and a search device that converts a combinatorial optimization problem of a material composition asymptotically approaching a target physical property value into an Ising model and causes the computing device to solve the combinatorial optimization problem. The system receives a target value and a tolerable variation range of a physical property, converts a mathematical expression that formulates a combinatorial optimization problem of a material composition that asymptotically approaches the target value from a mixed material of materials having known physical property values, into the Ising model in a data format usable by the computing device, computes an optimum solution of the material composition asymptotically approaching the target value, using the Ising model, and excludes the materials included in the mixed material, from the material composition of the optimum solution computed, within the tolerable variation range, and outputs the material composition.

公开(公告)号：US20200147590A1

公开(公告)日：2020-05-14

申请号：US16473422

申请日：2017-12-27

Applicant: SHOWA DENKO K.K.

Inventor： Takuya IMAI ,  Kazuo FURUYA ,  Kunchan LEE ,  Suguru SAKAGUCHI ,  Yoshishige OKUNO

IPC: B01J23/75 ,  H01M4/90 ,  H01M8/10

Abstract: An oxygen reduction catalyst containing as constituent elements cobalt, sulfur, and a transition metal element M being at least one element selected from chromium and molybdenum, the oxygen reduction catalyst being ascertained to have a crystal structure of a cobalt disulfide cubic crystal in powder X-ray diffraction measurement, and having a molar ratio of the transition metal element M to cobalt (M/cobalt) of 5/95 to 15/85. Also disclosed is an electrode having a catalyst layer containing the oxygen reduction catalyst, a membrane electrode assembly including a polymer electrolyte membrane wherein the electrode serves as a cathode and/or an anode, and a fuel cell including the membrane electrode assembly.

公开(公告)号：US20190386321A1

公开(公告)日：2019-12-19

申请号：US16471623

申请日：2017-12-27

Applicant: SHOWA DENKO K.K.

Inventor： Suguru SAKAGUCHI ,  Yoshishige OKUNO ,  Takuya IMAI ,  Kunchan LEE

IPC: H01M4/92 ,  B01J27/051 ,  B01J27/043 ,  H01M8/10

Abstract: The present invention relates to an oxygen reduction catalyst, an electrode, a membrane electrode assembly, and a fuel cell, and the oxygen reduction catalyst is an oxygen reduction catalyst containing substituted CoS2, in which the substituted CoS2 has a cubic crystal structure, the oxygen reduction catalyst contains the substituted CoS2 within 0.83 nm from the surface thereof, and the substituted CoS2 has at least one substitutional atom selected from the group consisting of Cr, Mo, Mn, Tc, Re, Rh, Cu, and Ag in some of Co atom sites.