Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
181444 | Electrochemistry Communications | 2008 | 4 Pages |
Abstract
A newly developed methodology for examining fuel cell catalyst degradation is introduced. In contrast to the conventional, destructive TEM investigation procedure, this methodology enables the observation of corrosion processes of the same catalyst region repeatedly. In particular we demonstrate the impact of a potential cycling treatment on a carbon-supported platinum catalyst, and propose a new corrosion mechanism for fuel cell catalyst degradation. Under the applied harsh conditions, whole Pt particles detach from the support and dissolve into the electrolyte without re-deposition.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Karl J.J. Mayrhofer, Josef C. Meier, Sean J. Ashton, Gustav K.H. Wiberg, Florian Kraus, Marianne Hanzlik, Matthias Arenz,