Investigation of carbon supported Pd-Cu nanoparticles as anode catalysts for direct borohydride fuel cell


BEHMENYAR G., AKIN A. N.

JOURNAL OF POWER SOURCES, cilt.249, ss.239-246, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 249
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.jpowsour.2013.10.063
  • Dergi Adı: JOURNAL OF POWER SOURCES
  • Sayfa Sayıları: ss.239-246

Özet

Carbon supported Pd and bimetallic Pd-Cu nanoparticles with different compositions are prepared by a modified polyol method and used as anode catalysts for direct borohydride fuel cell (DBFC). The physical and electrochemical properties of the as-prepared electrocatalysts are investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD), ICP-AES, cyclic voltammetry (CV), chronoamperometry (CA), and fuel cell experiments. The results show that the carbon supported Pd-Cu bimetallic catalysts have much higher catalytic activity for the direct oxidation of BH4- than the carbon supported pure nanosized Pd catalyst, especially the Pd50Cu50/C catalyst presents the highest catalytic activity among all as-prepared catalysts, and the DBFC using Pd50Cu50/C as anode catalyst and Pt/C as cathode catalyst gives the best performance, and the maximum power density is 98 mW cm(-2) at a current density of 223 mA cm(-2) at 60 degrees C. (C) 2013 Elsevier B.V. All rights reserved.