Proceedings of the ASME 2012 10th Fuel Cell Science, Engineering and Technology Conference
Numerous applications exist requiring power for small loads (<5W) with minimal mass operating in extreme ambient conditions. Making progress toward reducing stack mass, we investigate the influence of flow field channel depth and endplate compression on cell performance. The best performance was found at endplate compressions of 139 psi, cathode channel depths of 0.032 in and anode channel depths of 0.032 in. The maximum power mass-density achieved with these 4.84 cm2 cells was 16.8 mW/g in a single cell stack. If deployed in a multicell stack, this same performance would translate to a power mass-density of 45.3 mW/g, nearing the performance of off-the-shelf lithiumion batteries (approximately 70 mW/g).
© 2012 ASME
McKahn, Denise A. and Zhao, Xizhu, "Channel Dimension Constraints for Miniature Low Humidity PEM Fuel Cells" (2012). Engineering: Faculty Publications, Smith College, Northampton, MA.