On the possibility of replacement of Pt by Pd in a hydrogen electrode of PEM fuel cells

Characterization of carbon-supported platinum nano-particles synthesized using magnetron sputtering for application in PEM electrochemical systems

“…Working electrodes were prepared by mixing of 0.7 mg of synthesized electrocatalyst with 5 wt.% alcoholic solution of Nafion (Sigma Aldrich) and spraying over 1 cm 2 glassy carbon discs. The cyclic voltammograms were recorded in 1 M solution of H 2 SO 4 using a Solartron 1285 potentiostat/galvanostst (Solarton Analytical) in a potential range of À0.2 to þ1.1 V vs. SSCE with 20 mV s À1 sweep rate at a temperature of 20 C. The ECSA was calculated by the integration of CVA's hydrogen desorption peak, in accordance with the technique described in [13,14].…”

Hydrogen Evolution and Hydrogen Oxidation on Palladium Bismuth Alloys

“…In this study we present the results of the electrochemical screening of the HER and HOR activity of PdBi thin films alloys, synthesised over a wide compositional range. Although pure Pd exhibits a slightly lower activity for hydrogen oxidation than platinum [6], it has been suggested that it is competitive to platinum at the anode in an MEA [7] and in addition is a candidate in water electrolysis [8]. One of the main disadvantages of pure palladium at the anode is that hydride formation has the potential to make palladium based catalysts unstable and prone to degradation.…”

Synthesis of carbon coated tungsten carbide nano powder using hexane as carbon source and its structural, thermal and electrocatalytic properties

“…Tungsten carbide was found to be best electrocatalyst for hydrogen oxidation [6], methanol oxidation [7] and ethanol oxidation [8] reactions. The electrochemical stability of tungsten carbide (WC) nano powder has been studied over a wide potential range and it has shown promising results to be used as anode materials [9]. Moreover, replacing Pt by WC in fuel cell can also reduce its cost while maintain the same efficiency [10].…”