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High power density fuel cell comprising an array of microchannels

United States Patent

May 6, 2014
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A phosphoric acid fuel cell according to one embodiment includes an array of microchannels defined by a porous electrolyte support structure extending between bottom and upper support layers, the microchannels including fuel and oxidant microchannels; fuel electrodes formed along some of the microchannels; and air electrodes formed along other of the microchannels. A method of making a phosphoric acid fuel cell according to one embodiment includes etching an array of microchannels in a substrate, thereby forming walls between the microchannels; processing the walls to make the walls porous, thereby forming a porous electrolyte support structure; forming anode electrodes along some of the walls; forming cathode electrodes along other of the walls; and filling the porous electrolyte support structure with a phosphoric acid electrolyte. Additional embodiments are also disclosed.
Sopchak; David A. (Oakland, CA), Morse; Jeffrey D. (Westhampton, MA), Upadhye; Ravindra S. (Pleasanton, CA), Kotovsky; Jack (Alameda, CA), Graff; Robert T. (Modesto, CA)
Lawrene Livermore National Security, LLC. (Livermore, CA)
12/ 829,331
July 1, 2010
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.