The Catalytic Effect of Polypyrrole/Pt‐Cu on Oxygen Reduction Reaction

Abstract

This paper studies the electrochemical properties of ppy/Pt‐Cu composite for oxygen reduction reaction (ORR) and compares it to the highly porous ppy/Pt‐Cu catalyst, which can be synthesized by galvanostatic method (ppy/Pt‐Cu(GS)). The results of the polarization, rotating disk electrode and electrochemical impedance tests are discussed to determine the electrochemical properties of the catalysts. According to the results, ppy/Pt‐Cu(GS) catalyst is more active toward ORR compared to ppy/Pt‐Cu catalyst. The rotating disk electrode data indicates four‐electron transfer mechanism for this catalyst.

Synthesis of a hole‐containing polypyrrole film modified by copper cementation

“…Polypyrrole is one of the conducting polymers which has been extensively investigated due to its physicochemical stability, high conductivity, easy processability, and relatively low cost . The incorporation of metal particles into the polymeric matrix has received considerable attention due to the potential applications of these composites in catalytic materials, microelectronic devices, chemical sensors, and protection against corrosion . Ag, Cu, and Au are among the metals used to modify polymers.…”

“…On the other hand, electrochemically prepared PPy films are particularly attractive for electrocatalytic reductions . Multilayered polymeric coatings provide three‐dimensional reaction sites on the electrode.…”