Nanosized Co and Pd binary electrocatalyst loaded on Ce0.25Sr1.75NiO3.75 nanoparticles for ethanol electrooxidation
Paper ID : 1091-ICNS
Authors:
Zahra Yavari *1, Safiye Hashemzehi2, Hamideh Saravani2, Meissam Noroozifar3
1Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
2Department of Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran
3Department of Physical and Environmental Sciences, University of Toronto Scarborough1265 Military Trail, Toronto, Ontario, M1C 1A4, Canada
Abstract:
The improved efficiency of anode electrodes in the fuel cells is the main challenge to commercialize of this technology. The application of porous supports can be an efficient solution to improve the dispersion of electrocatalytic metals and to increase their electrochemical surface area. Hence, the Ce0.25Sr1.75NiO3.75 mixed metal oxide with nano-grains ⁓ 7.12 nm is fabricated by co-precipitation route supported with the ultrasonic and labeled CSNO. In the following, the wetness incorporation of CSNO is carried out with an aqua mixture of palladium and cobalt precursors. Thereafter, a fast chemical reduction is performed to reach nanosized Co and Pd. The obtained composite is denoted as NPd-NCo-CSNO. The CSNO and NPd-NCo-CSNO are characterized via X-ray diffraction, field emission scanning electron microscopy, energy dispersive analysis of X-ray and elemental mapping images. The electrocatalytic activity of NPd-NCo-CSNO was compared to CSNO, NPd and NPd-NCo as anodic electrode in the polymeric fuel cells toward ethanol oxidation. The results showed that the CSNO incorporation to NPd-NCo is effective to increase the current density and transferred charge during the ethanol electrooxidation.
Keywords:
ethanol electrooxidation; fuel cell; nano palladium; wetness incorporation; mixed metal oxide
Status : Abstract Accepted (Poster Presentation)