Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1290406 | Journal of Power Sources | 2008 | 7 Pages |
Abstract
The performance of nano-structured templated non-platinum-based cathode electrocatalysts for proton exchange membrane fuel cells (PEMFC) was evaluated for different catalyst layer compositions. The effect of non-platinum catalyst, Nafion, and 35Â wt% Teflon modified Vulcan XC-72 Carbon Blacks (XC-35) loadings were measured under H2/air and H2/O2 conditions. Transport hindrances that occur in the catalyst layers are evaluated with ÎE vs. i analysis. It is shown that transport limitations in the cathode catalyst layer can limit the performance of the cell at relatively low current densities if the catalyst layer composition is not optimized. Further, a procedure is outlined here to aid in the implementation of non-traditional catalyst materials into fuel cell systems (i.e. templated electrocatalyst as compared to the standard supported material).
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Tim S. Olson, Kate Chapman, Plamen Atanassov,