The coulombic efficiencies of Pd-Au/C catalysts for the electrochemical oxidation of borohydrides were measured and the impregnated states of Pd-Au were characterized by XRD and XPS to find their relevance to the catalytic performances of the catalysts. The Pd-Au/C (metal wt.% = 20%) catalysts showed coulombic efficiencies of 50-70% under the given galvanostatic conditions, with maintaining a current density close to 20% Pd/C at voltammetric test, which is thought to be related to the mixed state of monometallic Au and Pd-Au alloy on the carbon support.
Bibliographical noteFunding Information:
The authors gratefully acknowledge the financial support for this work provided by the Core Technology Development Program for Fuel Cells ( 10022712-2006-13 ) of the Ministry of Commerce, Industry and Energy (MOCIE) in Korea.
- Coulombic efficiency
- Direct borohydride fuel cell
- Fuel cell
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)