Carbon-support corrosion mechanisms and models
Advances in Electrocatalysis, Materials, Diagnostics and Durability
Low-temperature fuel cells
Published Online: 15 DEC 2010
Copyright © John Wiley & Sons, Ltd. All rights reserved.
Handbook of Fuel Cells
How to Cite
Gallagher, K. G., Darling, R. M. and Fuller, T. F. 2010. Carbon-support corrosion mechanisms and models. Handbook of Fuel Cells. .
- Published Online: 15 DEC 2010
The most significant challenges to the commercialization of fuel cells are cost and durability. The electrochemical oxidation of carbon in low-temperature fuel cells reduces the lifetime of these power plants. This article presents a current understanding of carbon oxidation and corrosion mechanisms that accelerate the reaction. Carbon is oxidized under various conditions including the reverse-current mechanism, which occurs when a fuel cell is started or stopped and during localized fuel starvation. Models and mitigation strategies are presented to enhance the understanding of the reverse-current mechanism. We conclude that a combined system and material mitigation strategy is necessary to overcome this corrosion mechanism.
- fuel cell;
- fuel starvation