Direct ethanol fuel cell: Electrochemical performance at 90 degree C on Pt and PtSn/C electrocatalysts

Carbon-supported Pt-based electrocatalysts were synthesized by Pechini method for the ethanol oxidation (EOR). Physicochemical characterizations were helpful to estimate the diameters of the obtained materials ranging from 2 nm to 5 nm. Main electrochemical experiments were carried out at 90 ?C i.e....

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Bibliographic Details
Published in:Journal of power sources 2012-01, Vol.198, p.95-99
Main Authors: Purgato, F L S, Pronier, S, Olivi, P, de Andrade, A R, Leger, J M, Tremiliosi-Filho, G, Kokoh, K B
Format: Article
Language:English
Subjects:
Anodic
Density
Electrocatalysts
Ethanol
Ethyl alcohol
Fuel cells
Oxidation
Platinum
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Summary:Carbon-supported Pt-based electrocatalysts were synthesized by Pechini method for the ethanol oxidation (EOR). Physicochemical characterizations were helpful to estimate the diameters of the obtained materials ranging from 2 nm to 5 nm. Main electrochemical experiments were carried out at 90 ?C i.e. under the working conditions of performing the single 5 cm2 direct ethanol fuel cell (DEFC). Pt80Sn20/C was the anode catalyst which has given the highest power density of 37 mW cm-2. Importantly, the IR spectroscopy measurements associated with the qualitative analysis done at the output of the anodic compartment of the fuel cell have shown that ethanol oxidation on Pt80Sn20/C was mainly a two-electron sustainable process.
ISSN:0378-7753
DOI:10.1016/j.jpowsour.2011.09.060