A novel, effective and low cost electrocatalyst for direct methanol fuel cells applications

Doner A., KARDAŞ G.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol.40, no.14, pp.4840-4849, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 14
  • Publication Date: 2015
  • Doi Number: 10.1016/j.ijhydene.2015.02.039
  • Journal Name: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.4840-4849
  • Keywords: Fuel cells, Methanol oxidation, Non platinum, Modified electrode, Ternary catalayst, DOPED COBALT/CARBON NANOPARTICLES, PT-NI NANOPARTICLES, NICKEL ELECTRODE, ELECTROCHEMICAL IMPEDANCE, ALLOY NANOPARTICLES, CARBON NANOTUBES, RU NANOPARTICLES, FORMIC-ACID, OXIDATION, ELECTROOXIDATION
  • Çukurova University Affiliated: Yes

Abstract

Electrocatalytic oxidation of methanol in alkaline solution on a NiCd/C catalyst chemically modified by a leaching process of Zn was investigated. Scanning electron microscopy (SEM), X-ray florescence spectroscopy (XRF) and atomic force microscopy (AFM) were used for coating characterization. The electrochemical properties and behaviors and also kinetic values of alkaline leached NiCdZn/C catalyst were characterized using cyclic voltammetry (CV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). The electrocatalytic activity of the alkaline leached NiCdZn/C catalyst toward methanol oxidation is shown to strongly depend on the porous and larger structure of coating and increasing of electrocatalytic active sites. The prepared catalyst in the present work is the most promising system for use in direct methanol fuel cells. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.