Direct Formic Acid Microfluidic Fuel Cell with Pd Nanocubes Supported on Flow-Through Microporous Electrodes

crystallographicplanes and flow-through microporous electrodes with high surface area. The high performance is attributed to the favorable sizeand shape of the catalyst, the high surface-to-volume ratio, and the high localized mass transport rates inside the flow-throughmicroporous electrodes. These results open up the opportunity to utilize oxygen as oxidant in miniaturized electrochemical cellswithout the constraints imposed by integration of air-breathing cathodes exposed to surrounding air.© The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative CommonsAttribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/),whichpermitsnon-commercialreuse,distribution,andreproductioninanymedium,providedtheoriginalworkisnotchangedinanyway and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. [DOI: 10.1149/2.0031504eel]All rights reserved.Manuscript submitted October 29, 2014; revised manuscript received January 26, 2015. Published February 5, 2015.