Artículos de revistas
Direct ethanol fuel cell: Electrochemical performance at 90 degrees C on Pt and PtSn/C electrocatalysts
Fecha
2012Registro en:
JOURNAL OF POWER SOURCES, AMSTERDAM, v. 198, n. 1, pp. 95-99, 2012
0378-7753
10.1016/j.jpowsour.2011.09.060
Autor
Purgato, F. L. S.
Pronier, S.
Olivi, P.
Andrade, A. R. de
Leger, J. M.
Tremiliosi Filho, Germano
Kokoh, K. B.
Institución
Resumen
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 degrees C i.e. under the working conditions of performing the single 5 cm(2) direct ethanol fuel cell (DEFC). Pt(80)Sn(20)/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 Pt(80)Sn(20)/C was mainly a two-electron sustainable process. (C) 2011 Elsevier B.V. All rights reserved.