Characterization of Pt-Pd/C Electrocatalyst for Methanol Oxidation in Alkaline Medium

<table>Proposed equivalent circuit for the methanol oxidation on Pt-Pd/C catalyst in a solution containing 0.5 M NaOH and 1.0 M methanol at 140 mV. (<svg height="14.3625" id="M67" style="vertical-align:-3.2316pt" version="1.1" viewbox="0 0 17.125 14.3625" width="17.125" xmlns="http://www.w3.org/2000/svg">
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</svg>: solution resistance CPE: constant phase element <svg height="14.35" id="M68" style="vertical-align:-3.22281pt" version="1.1" viewbox="0 0 20.2125 14.35" width="20.2125" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑅</tspan>
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</svg>: Charge transfer resistance, and <svg height="14.3375" id="M69" style="vertical-align:-3.21404pt" version="1.1" viewbox="0 0 21.2875 14.3375" width="21.2875" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑍</tspan>
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</svg>: warburg impedance).</table>

International Journal of Electrochemistry

fig14

Figure 14

Figure 14: Characterization of Pt-Pd/C Electrocatalyst for Methanol Oxidation in Alkaline Medium 