US 11,811,073 B2
Catalyst
Alejandro Martinez Bonastre, Reading (GB); Jonathan Sharman, Reading (GB); and Geoffrey Spikes, Reading (GB)
Assigned to Johnson Matthey Hydrogen Technologies Limited, London (GB)
Appl. No. 16/761,873
Filed by Johnson Matthey Hydrogen Technologies Limited, London (GB)
PCT Filed Nov. 22, 2018, PCT No. PCT/GB2018/053374
§ 371(c)(1), (2) Date May 6, 2020,
PCT Pub. No. WO2019/102197, PCT Pub. Date May 31, 2019.
Claims priority of application No. 1719463 (GB), filed on Nov. 23, 2017.
Prior Publication US 2020/0313201 A1, Oct. 1, 2020
Int. Cl. H01M 4/92 (2006.01); H01M 4/88 (2006.01); H01M 4/86 (2006.01)
CPC H01M 4/921 (2013.01) [H01M 4/8828 (2013.01); H01M 4/8882 (2013.01); H01M 4/925 (2013.01); H01M 2004/8684 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electrocatalyst material for an anode catalyst, wherein the electrocatalyst material comprises a support material, wherein the support material consists of carbon and comprises a plurality of individual support particles or aggregates, wherein the individual support particles or aggregates have a mean particle or aggregate size of 5-500 nm, wherein each individual support particle or aggregate is in direct contact with and has dispersed thereon separate (i) first particles and (ii) second particles, and wherein the first particles are separate from the second particles:
(i) the first particles consist of Pt;
(ii) the second particles consist essentially of a second metal
wherein the second metal is Ir; and
each individual support particle or aggregate of the support material of the electrocatalyst material has dispersed thereon only the said first and second particles.