公开(公告)号：US20240287692A1

公开(公告)日：2024-08-29

申请号：US18569962

申请日：2022-03-29

Applicant: DE NORA PERMELEC LTD

Inventor： Takashi FURUSAWA ,  Akihiro KATO ,  Eri MIYAKAWA ,  Fabio TIMPANO ,  Alice CALDERARA

IPC: C25B11/063 ,  C25B1/04 ,  C25B11/093

CPC classification number: C25B11/063 ,  C25B1/04 ,  C25B11/093

Abstract: The object of the present invention is to provide an electrode having high durability and lower manufacturing costs and a method for manufacturing the same. An electrode comprising a coating that contains a mixed metal oxide on a valve metal substrate with an intermediate layer therebetween that contains an alloy that contains a titanium component and a tantalum component, wherein the molar ratio of metal elements in the mixed metal oxide is 35 to 48% for the total of an iridium element and a ruthenium element, 45 to 60% of a tin element, and 3 to 9% of a tantalum element, and the molar ratio of the iridium element to the total of the iridium element and the ruthenium element in the mixed metal oxide is 32 to 60% inclusive.

公开(公告)号：US20230279568A1

公开(公告)日：2023-09-07

申请号：US18005795

申请日：2021-05-26

Applicant: DE NORA PERMELEC LTD

Inventor： Takashi FURUSAWA ,  Eri MIYAKAWA

IPC: C25B11/093 ,  C25B1/02 ,  C25B11/052 ,  C25C7/02 ,  C25B11/063

CPC classification number: C25B11/093 ,  C25B1/02 ,  C25B11/052 ,  C25C7/02 ,  C25B11/063

Abstract: The present invention provides an oxygen generation electrode provided with a catalyst layer having a high specific electric conductivity, and having excellent durability such that even when an acidic electrolyte is electrolyzed, the catalyst components are unlikely to be consumed and long-term electrolysis can be performed. The oxygen generation electrode is an oxygen generation electrode 10 provided with a substrate 2 formed with titanium or a titanium alloy, and a catalyst layer 4 disposed on the substrate 2 and formed with a mixed metal oxide, wherein the catalyst layer 4 satisfies at least any one of the following condition (1) and condition (2). Condition (1): containing ruthenium, tin, and trivalent or higher polyvalent metal element excluding a tetravalent metal element. Condition (2): containing ruthenium and tin, and having a content of ruthenium of 40 mol % or more based on the total content of the ruthenium and tin.