Abstract
Sulfonated silica-ceramic carbon electrode (SS-CCE) consist of Pt/C catalyst and an organosilicate-based ionomer (instead of Nafion). We compared the durability of an SS-CCE and a Nafion-based electrode (NBE) composed of the same Pt/C catalyst. Each were subjected to an accelerated stress test (AST) that aggressively promotes carbon corrosion. Electrochemical impedance spectroscopy showed that while the NBE displayed severe carbon corrosion, the SS-CCE showed only slight signs of carbon corrosion. The SS-CCE’s enhanced durability arises from the covalent linkage of the organosilicate ionomer to the Pt/C surface, which served as a protective barrier that mitigated corrosion.
Funder
Gouvernement du Canada ∣ Natural Sciences and Engineering Research Council of Canada
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
6 articles.
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