Abstract
Efforts for reduction of catalysts loads in PEM fuel cells, are caused by high price of platinum metals and
limited sources of this elements. Exist many possible ways, how to reduce load of platinum metals. One is
preparing particles with lower diameter, but we are limited minimal diameter for catalytic properties.
Second way is preparing catalyst form alloys of platinum with some other metal. This work is focused to
alloy Pt with Co. Important parameters of catalyst are activity, stability, sensibility to poisoning and etc.
This work compares stability of catalysts based on pure platinum and alloy platinum and cobalt. Although
catalyst based on Pt-Co alloy assign approximately half initial electrocatalytic surface in compare with
catalyst based on pure platinum, after 10 000 cycles assign catalyst based on alloy higher stability.
limited sources of this elements. Exist many possible ways, how to reduce load of platinum metals. One is
preparing particles with lower diameter, but we are limited minimal diameter for catalytic properties.
Second way is preparing catalyst form alloys of platinum with some other metal. This work is focused to
alloy Pt with Co. Important parameters of catalyst are activity, stability, sensibility to poisoning and etc.
This work compares stability of catalysts based on pure platinum and alloy platinum and cobalt. Although
catalyst based on Pt-Co alloy assign approximately half initial electrocatalytic surface in compare with
catalyst based on pure platinum, after 10 000 cycles assign catalyst based on alloy higher stability.
