US 12,139,799 B2
Method for splitting water
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 Mar. 15, 2024, as Appl. No. 18/607,174.
Application 18/607,174 is a continuation of application No. 18/146,144, filed on Dec. 23, 2022, granted, now 11,987,894.
Application 18/146,144 is a continuation of application No. 16/660,160, filed on Oct. 22, 2019, granted, now 11,542,614, issued on Jan. 3, 2023.
Prior Publication US 2024/0318332 A1, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C25B 11/073 (2021.01); C01G 31/00 (2006.01); C01G 51/00 (2006.01); C25B 1/04 (2021.01); H01M 4/485 (2010.01); H01M 4/525 (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)] 10 Claims
OG exemplary drawing
 
1. A method for splitting water into H2 and O2, comprising:
subjecting the electrodes of an electrochemical cell with a potential of 0.5-2.0 V,
wherein the electrochemical cell comprises:
an electrolyte vessel containing an electrolyte solution,
a working electrode, and a spiral wire counter electrode,
wherein the working electrode and the spiral wire counter electrode are disposed at least partially in the electrolyte vessel and are at least partially immersed in the electrolyte solution contained in the electrolyte vessel,
wherein the working electrode is a composite thin film electrode comprising:
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, and
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.