Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7718199 | International Journal of Hydrogen Energy | 2014 | 4 Pages |
Abstract
The effect of orthohydrogen-parahydrogen concentration on the performance of a proton exchange membrane fuel cell is calculated and experimentally investigated. Gibbs free energy and reversible cell potential calculations predict that parahydrogen at room temperature produces a voltage 20Â mV/cell higher than normal hydrogen and a 1.6% increase in efficiency over normal hydrogen. Experimental data based on a 1Â kW proton exchange membrane fuel cell rapidly switched between normal and parahydrogen did not show a statistically significant difference in performance. Variations due to stack humidity and anode purging are found to dominate fuel cell output. The experimental results confirm that, as anticipated, parahydrogen concentration has a negligible impact on fuel cell performance for the majority of practical applications.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Justin Bahrami, Patrick Gavin, Ronald Bliesner, Su Ha, Patrick Pedrow, Ali Mehrizi-Sani, Jacob Leachman,