	US 11,746,429 B2
	Method for decomposing water into H2 and O2
Abdul Rehman, Dhahran (SA); Abbas Hakeem Saeed, Dhahran (SA); and Muhammad Ali Ehsan, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Dec. 23, 2022, as Appl. No. 18/146,128.
Application 18/146,128 is a continuation of application No. 16/660,160, filed on Oct. 22, 2019, granted, now 11,542,614.
Prior Publication US 2023/0126156 A1, Apr. 27, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C25B 11/073 (2021.01); C01G 31/02 (2006.01); C01G 31/00 (2006.01); C25B 1/04 (2021.01); C01G 51/00 (2006.01); H01M 4/525 (2010.01); H01M 4/485 (2010.01)

CPC C25B 11/073 (2021.01) [C01G 31/006 (2013.01); C01G 51/42 (2013.01); C25B 1/04 (2013.01); H01M 4/485 (2013.01); H01M 4/525 (2013.01)]

12 Claims

1. A method for decomposing water into H₂and O₂, comprising:

applying a potential of 0.5-2.0 V across electrodes immersed in an aqueous electrolyte solution in an electrochemical cell,

wherein the electrodes include a composite thin film electrode; and

a counter electrode; and

wherein the composite thin film electrode comprises a CoVOx layer having an average thickness of 500 nm-5 μm in contact with a substrate,

wherein the CoVOx layer comprises amorphous CoVOx having a Co:V molar ratio in a range of 1.0:1.2-1.5:1.0,

wherein the CoVOx layer has an O:Co molar ratio and/or an O:V molar ratio in a range of 4:1 to 9:1.