Axiomatic Design Theory is used to analyze the design of conventional DMFC anodes. The difficulty conventional electrode design have satisfying the requirements for ionic conductivity in the anode are shown to lead to functional coupling, and therefore, an inability to meet performance requirements. A new anode design is proposed using embossed ionically conductive channels through the thickness of the electrode. Numerical simulation of the proposed design indicates that ionic resistance is greatly reduced and, crucially, no longer a function of catalyst loading. Electrodes are fabricated with 75 μm diameter posts spaced 175 μm apart. These electrodes are tested with impedance spectroscopy and show a 46% reduction in ionic resistance and a 6% increase in catalyst area available. Cell power is estimated to increase by 4% with the current post geometry, while ideal geometry may be able to deliver 9% power improvement.
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