Title of article :
Electrocatalytic activity of binary and ternary composite films of Pd, MWCNT and Ni, Part II: Methanol electrooxidation in 1 M KOH
Author/Authors :
Singh، نويسنده , , R.N. and Singh، نويسنده , , A. and Anindita and Mishra، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Abstract :
Binary and ternary composite films of Pd, multiwalled carbon nanotubes (MWCNTs) and Ni have been obtained on glassy carbon electrodes and investigated for electrocatalysis of methanol oxidation in 1 M KOH. It is observed that small addition (1–5%) of MWCNTs to Pd increases the apparent electrocatalytic activity of the electrode considerably, the magnitude of enhancement, however, being the greatest (5–8 times) with 1% MWCNT. 1% Ni introduction to the active Pd–1% MWCNT electrode increased the apparent electrocatalytic activity by 1.4–1.7 times further. Among the electrodes investigated, the Pd–1% MWCNT–1% Ni composite electrode has the greatest apparent electrocatalytic activity. The enhanced electrocatalytic activity of the electrodes is ascribed to their improved geometrical as well as electronic properties.
Keywords :
direct methanol fuel cells , Methanol electrooxidation , Multiwalled carbon nanotubes , Electrochemical active surface area , Composite electrodes
Journal title :
International Journal of Hydrogen Energy
Journal title :
International Journal of Hydrogen Energy