Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 15, Issue 6, Pages 2125-2130Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cp43262e
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Funding
- National Research Foundation of Korea
- Ministry of Education, Science and Technology [NRF-C1AAA001-2010-0029065]
- WCU program [R31-10013]
- Global Frontier R&D Program on the Center for Multiscale Energy System
- NRF under the MEST, Korea
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Electrocatalysts for hydrogen oxidation reactions (HORs) are the key to renewable-energy technologies including fuel cells, hydrogen pumps, and water splitting. Despite the significant technological interest and tremendous efforts that have been made, development of hydrogen electrode catalysts with high activity at low cost remains a great challenge. Here, we report the preparation, characterization, and electrochemical properties of a hybrid material composed of Pd nanocrystals grown on spontaneously oxidized WC as a high-performance catalyst for the HOR. The Pd/WC hybrid exhibits enhanced catalytic activity compared to a carbon supported Pd (Pd/C) catalyst, making it a Pt-free, effective catalyst for the HOR. The remarkable catalytic activity arises from synergistic ligand effects between Pd and WC.
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