Electrocatalytic behavior of the Pd-modified electrocatalyst for hydrogen evolution

Doner A., Tezcan F., KARDAŞ G.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.38, sa.10, ss.3881-3888, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 10
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.ijhydene.2013.01.141
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3881-3888
  • Anahtar Kelimeler: Palladium loading, Electrocatalysis, Hydrogen evolution reaction, ELECTROCHEMICAL DEPOSITION, ALLOY COATINGS, NI, ELECTRODE, CATHODES, CO, IMPEDANCE, KINETICS, POLARIZATION, MORPHOLOGY
  • Çukurova Üniversitesi Adresli: Evet

Özet

The hydrogen evolution behavior of C/CoSn, C/CoSnZn and C/CoSnZn-Pd catalysts which were prepared on a graphite substrate (C) by electrochemical deposition, as well as their electrochemical properties in the KOH solutions, have been investigated by the polarization measurements, cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and electrolysis techniques. C/CoSnZn catalyst was etched in caustic to leach out zinc and to produce the Raney-type, porous electrocatalytic surface for hydrogen evolution. In order to further improve the catalytic activity of the C/CoSnZn catalyst for the hydrogen evolution reaction (HER), this catalyst was modified by loading a small amount of Pd. Results showed that the modification of C/CoSnZn catalyst by deposition of a small amount of Pd can render cathode material very active in hydrogen evolution. High catalytic activity of the C/CoSnZn-Pd catalyst depends on the surface porosity, large specific surface area and well known intrinsic catalytic activity of Pd. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.