Electrochemical characteristics of Pt-WO3/C and Pt-TiO2/C electrocatalysts in a polymer electrolyte fuel cell

Electrochemical characteristics of Pt-WO3/C and Pt-TiO2/C electrocatalysts in a polymer electrolyte fuel cell

TitleElectrochemical characteristics of Pt-WO3/C and Pt-TiO2/C electrocatalysts in a polymer electrolyte fuel cell
Publication TypeJournal Article
Year of Publication2001
AuthorsJoongpyo Shim, Chang-Rae Lee, Hong-Ki Lee, Ju-Seong Lee, Elton J Cairns
JournalJournal of Power Sources
Volume102
172
Issue1-2
Pagination172-177
Date Published12/2001
Keywordselectrocatalyst, polymer electrolyte fuel cell, titanium oxide, tungsten oxide
Abstract

The electrochemical characteristics and the catalytic activity of Pt–tungsten oxide and Pt–titanium oxide catalysts in polymer electrolyte fuel cell were investigated by cyclic voltammetry and in fuel cells. Fuel cell performances for those catalysts at 80°C with humidified hydrogen and oxygen increased with increasing added oxide content in the catalysts up to a certain content. Adsorption characteristics for hydrogen and oxygen on the surface of platinum were greatly influenced by added oxide content in the catalysts. It was also obtained that the electrochemically active surface area of these catalysts was influenced by their oxide content.

DOI10.1016/S0378-7753(01)00817-5