Title :
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
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;
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
DOI :
10.1109/SENSOR.2009.5285621
