Title
Investigation Of Platinum Oxidation In Pem Fuel Cells At Various Relative Humidities
Abstract
Surface oxidation of Pt cathode of proton exchange membrane (PEM) fuel cells at different relative humidities (RHs) was studied using cyclic voltammetry. The degree of platinum oxidation increased significantly with an increase in RH from 20% to 72%. Holding the cathode at high potentials and exposing it to air instead of N2 resulted in the formation of more platinum oxides. At 20% RH, 0.85 V, and 100°C, both water and oxygen equally contribute to platinum oxidation; at 100% RH, 0.85 V, and 100°C, water produces more than 70% of the platinum oxidation while 30% forms from oxygen. © 2006 The Electrochemical Society.
Publication Date
1-1-2007
Publication Title
Electrochemical and Solid-State Letters
Volume
10
Issue
1
Number of Pages
-
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1149/1.2372230
Copyright Status
Unknown
Socpus ID
33845361119 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/33845361119
STARS Citation
Xu, Hui; Kunz, Russell; and Fenton, James M., "Investigation Of Platinum Oxidation In Pem Fuel Cells At Various Relative Humidities" (2007). Scopus Export 2000s. 7406.
https://stars.library.ucf.edu/scopus2000/7406