	US 12,188,136 B2
	Hypochlorous acid generating electrode
Sena Sakai, Kitakyushu (JP); Keisuke Tashiro, Kitakyushu (JP); Satoru Matsumoto, Kitakyushu (JP); and Hiroaki Amemori, Kitakyushu (JP)
Assigned to Toto Ltd., Fukuoka (JP)
Filed by TOTO LTD., Kitakyushu (JP)
Filed on Mar. 10, 2023, as Appl. No. 18/119,993.
Claims priority of application No. 2022-059482 (JP), filed on Mar. 31, 2022.
Prior Publication US 2023/0357938 A1, Nov. 9, 2023
Int. Cl. C25B 11/00 (2021.01); C25B 1/22 (2006.01); C25B 9/17 (2021.01); C25B 11/063 (2021.01); C25B 11/075 (2021.01)

CPC C25B 11/075 (2021.01) [C25B 1/22 (2013.01); C25B 9/17 (2021.01); C25B 11/063 (2021.01)]

8 Claims

1. An electrode to be used for generating hypochlorous acid by electrolyzing water that contains a chloride ion, comprising:

an electrode substrate comprising titanium or titanium alloy,

a composite layer that is electrically connected with the electrode substrate, and

a thin intermediate layer comprising titanium oxide on a surface of the substrate;

wherein the composite layer comprises iridium or a compound thereof, tantalum or a compound thereof, and ruthenium or a compound thereof and/or platinum, and does not contain rhodium oxide; and

wherein the composite layer contains, in terms of metal, iridium in the range of 32 to 43 mol %, tantalum in the range of 25 to 36 mol %, ruthenium in the range of 8 to 22 mol %, and platinum in the range of 10 to 23 mol %.