Investigation on the Stability of Pt/C and Pt-RuOx/C Catalysts

摘要

Electrode electroactivity depends directly on its nature, morphology, and structure. These parameters, in turn, are related to the preparation method, which will influence the cell performance and electrode stability. Thermal decomposition of polymeric precursors is among the several proposed methods for catalyst preparation. In this work, the effect of modifications to this method during the synthesis of Pt-RuOx/C electrocatalysts on the composition and electrochemically active surface area of electrode catalysts were monitored. To this end, the prepared electrodes were subjected to a large number of potential scans and to constant potential for a prolonged time period in sulfuric acid 0.5 mol L~(-1) and methanol 0.1 mol L~(-1) solution.