PdNi/C catalysts have been successfully synthesized by the
simultaneous reduction method using NaBH4 as a reductant and
have been characterized by different physicochemical methods.
XRD analyses confirm the formation of face-centered cubic crystalline
Pd and Ni(OH)2 on the carbon powder for the PdNi/C
catalysts. The TEM images show the well-dispersed metal particles
on the carbon powder, and EDS data indicate a uniform distribution
of composition. The CV and CP results demonstrate that the
Pd2Ni3/C catalyst exhibits superior activity and stability toward
EOR in alkaline media compared with the Pd/C catalyst, and the various
oxidation states of Ni, which are uniformly distributed around
Pd, account for the role of Ni as a catalytically enhancing agent
toward EOR in alkaline media. Fuel cell performance tests demonstrate
that the optimized Pd2Ni3/C catalyst prepared in this work
is a promising anode catalyst for alkaline DEFCs by giving higher