Journal
ELECTROCHEMICAL AND SOLID STATE LETTERS
Volume 12, Issue 5, Pages B73-B76Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3086263
Keywords
carbon; catalysts; cerium compounds; dissociation; electrochemical analysis; electrochemistry; fuel cells; nanoparticles; oxidation; palladium; reaction kinetics
Funding
- Ministry of Education, Singapore. [RG40/05, ARC11/06]
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Pd-CeO2/C electrocatalyst was successfully prepared by first depositing CeO2 onto carbon black through the microwave-assisted heating process under the presence of ammonium, followed by the reduction of Pd nanoparticles. In order to demonstrate the promotive role of CeO2 in the Pd-CeO2/C system, various electrochemical characterization methods were performed for the formic acid electro-oxidation. It was found that Pd-CeO2/C showed more enhanced electrocatalytic activity and improved kinetics than conventional Pd/C. It was proposed that the existence of CeO2 may promote the proceeding of the direct oxidation pathway (dehydrogenation) instead of the dehydration pathway.
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