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한국전기화학회 한국전기화학회

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Vol.17, No.3, August 2014

Physioelectrochemical Investigation of Electrocatalytic Activity of Modified Carbon Paste Electrode in Alcohol Oxidation as Anode in Fuel Cell
JKES Vol.17, No.3, pp.179-186, August 2014
DOI : 10.5229/JKES.2014.17.3.179
Javad Shabani-Shayeh1*, Ali Ehsani2, and Majid Jafarian1
1Department of Chemistry, Faculty of science, K. N. Toosi University of Technology , Tehran, Iran 2Department of Chemistry, Faculty of science, University of Qom, Qom, Iran
Methanol electro oxidation on the surface of carbon paste modified by NiCl2/6H2O was studied in 1M NaOH by potentiostatic and potentiodynamic methods. Ni/C catalyst by the concentration of 5% Ni showed about twice higher electro catalytic activity than Ni metal. The amount of monolayer’s on the surface of electrode is almost one order higher for Ni/C than Ni electrode. The kinetic parameters and the diffusion coefficient of methanol were derived from chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS) measurements.
Keyword : Methanol electro-oxidation, carbon paste, impedance, modified electrode.

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