US 12,308,445 B2
Methods of preparing catalyst materials
Arman Bonakdarpour, Vancouver (CA); Lius Daniel, Vancouver (CA); Baizeng Fang, Vancouver (CA); Jonathan Sharman, Reading (GB); and David Wilkinson, Vancouver (CA)
Assigned to Johnson Matthey Hydrogen Technologies Limited, London (GB)
Appl. No. 17/757,539
Filed by JOHNSON MATTHEY HYDROGEN TECHNOLOGIES LIMITED, London (GB)
PCT Filed Feb. 11, 2021, PCT No. PCT/GB2021/050317
§ 371(c)(1), (2) Date Jun. 16, 2022,
PCT Pub. No. WO2021/161022, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 2001890 (GB), filed on Feb. 12, 2020.
Prior Publication US 2023/0019857 A1, Jan. 19, 2023
Int. Cl. H01M 4/92 (2006.01); H01M 4/88 (2006.01); H01M 8/1004 (2016.01)
CPC H01M 4/926 (2013.01) [H01M 4/8807 (2013.01); H01M 4/881 (2013.01); H01M 4/8892 (2013.01); H01M 8/1004 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of preparing catalyst material which comprises electrocatalyst particles, a support material, and graphitic carbon nitride, said method comprising the steps of:
(i) providing a catalyst material precursor comprising electrocatalyst particles dispersed on a support material, wherein the catalyst material precursor does not comprise graphitic carbon nitride; then
(ii) applying graphitic carbon nitride to the catalyst material precursor provided in step (i) by contacting the catalyst material precursor with a graphitic carbon nitride precursor compound and applying conditions to transform the graphitic carbon nitride precursor to graphitic carbon nitride.