Characterizing Electrolyte and Platinum Interface in PEM Fuel Cells Using CO Displacement. Issue 2 (13th December 2016)

• Record Type: Journal Article
• Authors: Garrick, Taylor R.; Moylan, Thomas E.; Yarlagadda, Venkata; Kongkanand, Anusorn
• Is Part Of: Journal of the Electrochemical Society. Volume 164:Issue 2(2017)
• Page Start: F60
• Page End: F64
• Publication Date: 2016-12-13
• Subjects: CO displacement -- electrochemical diagnostic -- fuel cell -- PEMFC -- Pt electrolyte interface; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0551702jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Relatively large O2 transport resistance at the ionomer and Pt interface has been thought to be responsible for the large performance loss at high power for a low Pt loading proton-exchange-membrane fuel cell. A facile method to characterize the interface in the fuel cell electrode is needed. In this study, the CO displacement method was explored on polycrystalline Pt and carbon-supported Pt nanoparticles. The displacement charge coverages were used to quantify the adsorption of perchlorate, sulfate, and perfluorosulfonic acid ionomer. The application of this method in a fuel cell electrode was demonstrated.