Article ID Journal Published Year Pages File Type
1290406 Journal of Power Sources 2008 7 Pages PDF
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 35 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 ΔE 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).
Related Topics
Physical Sciences and Engineering Chemistry Electrochemistry
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