Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1278942 | International Journal of Hydrogen Energy | 2011 | 7 Pages |
Palladium selenides, PdSe, Pd3Se and PdSe2 have been prepared by the hydrothermal method and investigated for their structural and electrocatalytic properties toward the oxygen reduction reaction (ORR) using SEM/TEM, XRD, cyclic and linear sweep voltammetries. The crystallites of PdSe and PdSe2 are found to follow tetragonal and orthorhombic crystal structures, respectively. The PdSe electrode in 0.5 M H2SO4 exhibits significantly higher electrocatalytic activity than the Pd3Se or PdSe2 electrode under similar experimental conditions. Further, a change in the palladium/selenium ratio from unity in the catalyst results in low ORR activity.
► In this study we prepare palladium selenides (PdSe, Pd3Se and PdSe2) by using hydrothermal method. ► The prepared catalysts were investigated for oxygen reduction reaction. ► Among prepared catalysts PdSe were found to be most active than Pd3Se and PdSe2. ► The prepared catalysts have excellence tolerance for methanol oxidation reaction. ► PdSe can be used as a potential methanol tolerant cathode for the ORR in methanol fuel cells.