Ethanol electro-oxidation using cadmium-doped cobalt/carbon nanoparticles as novel non precious electrocatalyst

Authors: Nasser A.M. Barakat, Mohammad A. Abdelkareem, Hak Yong Kim

Abstract:
Novel electrocatalyst based on non precious metals (Co and Cd) is introduced to be used as anode in the ethanol fuel cells. Cd-doped Cobalt nanoparticles encapsulated in graphite shell have been synthesized using simple sol–gel technique. The introduced electrocatalyst can be prepared from a sol–gel composed of cadmium acetate, cobalt acetate and poly(vinyl alcohol) based on the polycondensation possibility of the acetates. Grinding and calcination in Ar atmosphere of the prepared gel leads to produce Cddoped Co nanoparticles encapsulated in a thin graphite layer. High current density (70 mAcm⁻²) and considerably low onset potential (∼585 mV vs. NHE) were obtained when the synthesized nanoparticles have been exploited as electrocatalyst for ethanol (concentration 1 M) oxidation in basic media (1 M KOH). Considering that the introduced nanoparticles composed of non precious metals and the obtained electrochemical results are satisfactory, the introduced study might open new avenues to the cobaltbased nanostructures to be used as novel electrocatalysts in the fuel cells applications. 

Keywords:
Direct ethanol fuel cells
Non precious catalysts C
admium-doped cobalt
Sol–gel

Published in: Applied catalysis A: General  (Volume 455, Pages 1-266, 30 March 2013)

Publisher: Elsevier

ISSN Information: 0926-860X

Ethanol electro-oxidation using cadmium-doped cobalt/carbon nanoparticles as novel non precious electrocatalyst

Bình luận của bạn

*

*

*

*

 Captcha

Gửi bình luận nhập lại