Communication—An Organosilane-Based Fuel Cell Ionomer that Mitigates Carbon Corrosion | Zendy

Richard Acheampong | Zendy; Reza Alipour Moghadam Esfahani | Zendy; Reza B. Moghaddam | Zendy; E. Bradley Easton | Zendy

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Communication—An Organosilane-Based Fuel Cell Ionomer that Mitigates Carbon Corrosion

Author(s) -

Richard Acheampong,

Reza Alipour Moghadam Esfahani,

Reza B. Moghaddam,

E. Bradley Easton

Publication year - 2020

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1945-7111/ab7a0a

Subject(s) - ionomer , corrosion , nafion , materials science , dielectric spectroscopy , catalysis , electrochemistry , durability , carbon fibers , ceramic , electrode , chemical engineering , composite material , chemistry , polymer , organic chemistry , composite number , copolymer , engineering

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.

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