Preparation of Pt-Ru-Co ternary catalyst on carbon paper for PEMFC with electrodeposition and galvanic displacement

Abstract

The Pt-Ru-Co ternary catalyst was prepared on the carbon paper with electrodeposition and galvanic displacement. The carbon paper without PTFE (polytetrafluoroethylene) was used as the substrate for catalyst deposition. The catalyst was prepared with Co electrodeposition on carbon paper through the change of deposition potential and time. The Co nucleation on carbon paper was investigated by using the electrochemical techniques of linear sweep voltammetry (LSV), cyclic voltammetry (CV), chronoamperometry (CA) and field emission scanning electron microscopy (FESEM). Then Pt and Ru galvanic displacement were carried out by control of displacement time. Consequently, the Pt-Ru-Co ternary catalyst was successfully formed using electrodeposition and galvanic displacement, and it showed competitive catalytic activity compared to other reported results in electrochemical analysis.