Sputtered platinum-iridium as catalyst for hydrogen fuel cells

Author

Ganske, G. ; Topalov, G. ; Slavcheva, E. ; Mokwa, W. ; Schnakenberg, U.

Author_Institution

Inst. of Mater. in Electr. Eng. I, RWTH Aachen Univ., Aachen, Germany

fYear

2009

fDate

21-25 June 2009

Firstpage

2106

Lastpage

2109

Abstract

Co-sputtered platinum-iridium films were deposited and tested as catalysts for an application in hydrogen fuel cells. The morphological and electrochemical investigation of samples with different ratios of both metals revealed that by systematic varying of the components content it is possible to obtain PtIr alloy with optimal composition ensuring high catalytic activity at reduced noble metal loading. Among the tested samples the Pt₁₄Ir₈₆ is the most promising candidate for the oxygen reduction reaction.

Keywords

catalysis; catalysts; electrochemistry; fuel cells; iridium alloys; metallic thin films; platinum alloys; reduction (chemical); sputtered coatings; Pt₁₄Ir₈₆; catalytic activity; cosputtered films; electrochemistry; hydrogen fuel cells; morphology; oxygen reduction reaction; platinum-iridium catalyst; Cathodes; Electrons; Fuel cells; Hydrogen; Platinum; Power generation; Protons; Sputtering; Temperature; Voltage control; PtIr alloy; electrocatalysis; fuel cell; oxygen reduction;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference, 2009. TRANSDUCERS 2009. International

Conference_Location

Denver, CO

Print_ISBN

978-1-4244-4190-7

Electronic_ISBN

978-1-4244-4193-8

Type

conf

DOI

10.1109/SENSOR.2009.5285621

Filename

5285621