US 12,412,905 B2
Multifunctional mixed oxide electrocatalyst material and preparation method and use thereof
Hongliang Ao, Guangdong (CN); Yunsong Yang, Guangdong (CN); Yun Cai, Guangdong (CN); Siyu Ye, Guangdong (CN); Yuquan Zou, Guangdong (CN); Junke Tang, Guangdong (CN); and Ning Sun, Guangdong (CN)
Assigned to SINOHYKEY TECHNOLOGY GUANGZHOU CO. LTD, Guangzhou (CN)
Filed by SINOHYKEY TECHNOLOGY GUANGZHOU CO. LTD., Guangdong (CN)
Filed on Sep. 7, 2022, as Appl. No. 17/939,354.
Prior Publication US 2024/0079604 A1, Mar. 7, 2024
Int. Cl. H01M 4/86 (2006.01); H01M 4/90 (2006.01); H01M 8/1004 (2016.01)
CPC H01M 4/8652 (2013.01) [H01M 4/9016 (2013.01); H01M 8/1004 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A preparation method for a multifunctional mixed oxide electrocatalyst material, comprising:
dissolving a cerium-containing water-soluble precursor, or a cerium and a doping element-containing water-soluble precursor, heat treating with first hydrothermal reaction, and then filtering, washing and drying;
adding an iridium-containing water-soluble precursor or a ruthenium-containing water-soluble precursor or a ruthenium and iridium-containing water-soluble precursors, mixing uniformly, and heat treating with second hydrothermal reaction; and
filtering and washing a material obtained in the second hydrothermal reaction to obtain a precipitate, then drying and calcining the precipitate to obtain the multifunctional mixed oxide electrocatalyst material.