From Secondary to Primary Role in Alkaline Fuel Cells: Co-Decorated Graphene as Effective Catalyst for Ethanol Oxidation. (1st January 2015)

• Record Type: Journal Article
• Authors: Barakat, Nasser A. M.; Motlak, Moaaed; Nassar, M. M.; Abdelkareem, Mohammad Ali; Mahmoud, M. S.; El-Newehy, Mohamed H.; Moustafa, Hager M.
• Is Part Of: ECS Electrochemistry Letters. Volume 4:Number 1(2015)
• Page Start: F5
• Page End: F8
• Publication Date: 2015-01-01
• DOI: 10.1149/2.0011401eel
• Languages: English
• ISSNs: 2162-8726

Abstract

Abstract : This study proves that supporting of cobalt nanoparticles on graphene can modify its role to be the main electrocatalyst in ethanol oxidation process. The introduced cobalt-based catalyst was synthesized by reflux treatment of graphene oxide in presence of cobalt acetate at 150°C followed by calcination of the obtained product in Ar atmosphere at 850°C. Electrocatalytic activity investigation indicated that the introduced Co-decorated graphene can be effectively utilized in ethanol electrooxiation as the corresponding current density was 210 mA/cm 2 (at 3 M ethanol in 1 M KOH and 50 mV/s) and onset potential of 0.33 V [vs. Ag/AgCl].