2-PERCENT PLATINUM-H2WO4 BASED ELECTROCATALYSTS FOR PHOSPHORIC-ACID FUEL-CELL CATHODE

Authors
SAVADOGO O ESSALIK A
Citation
O. Savadogo et A. Essalik, 2-PERCENT PLATINUM-H2WO4 BASED ELECTROCATALYSTS FOR PHOSPHORIC-ACID FUEL-CELL CATHODE, Journal of the Electrochemical Society, 141(8), 1994, pp. 120000092-120000094
Citations number
15
Categorie Soggetti
Electrochemistry
Journal title
Journal of the Electrochemical Society → ACNP
ISSN journal
00134651
Volume
141
Issue
8
Year of publication
1994
Pages
120000092 - 120000094
Database
ISI
SICI code
0013-4651(1994)141:8<120000092:2PBEFP>2.0.ZU;2-6
Abstract
A Pt-H2WO4 based electrocatalyst has been fabricated by an inexpensive chemical route for use as an oxygen cathode in 99% phosphoric acid at 180-degrees-C. The effect of %Pt (w/w) and %H2WO4 (w/w) on the Pt-H2W O4 electrode performance was studied. The electrocatalytic properties for the oxygen reduction reaction, e.g., exchange current density, mas s activity, and specific activity of a 2% Pt-H2WO4 based electrode was several times higher than those of 10% Pt. The performance of the 2% Pt-1%H2WO4 was not due to an increase of its electrochemically active surface area. This may be due to electronic interaction and synergetic effects between electrocatalyst and support and its chemical composit ion.