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Comparison of Catalyst Performance for a Direct Methanol Fuel Cell Fabricated in Low Temperature Cofired Ceramics (LTCC)
Keywords: DMFC, catalysts, electrodes
Miniature direct methanol fuel cells (DMFCs) offer an interesting option as an embedded micro power sources for Microsystems. The ability to cofire large area and micro cavities, channels and anode/cathode structures into low temperature cofired ceramic (LTCC), with subsequent introduction of a polymer proton exchange membrane (PEM), will allow integration of a micro fuel cell directly into the interconnect substrate. In the fuel cell, a porous silver tape is used to replace the traditional carbon electrode typically found in DMFCs. Catalysts play a critical role in fuel cell performance.Two methods for introducing ruthenium and platinum catalysts were evaluated: cofired and post fired using resinates. The electrochemistry experimental results show that the cofired catalyst on silver electrode has a better catalysis effect than post fired and both the post fired and cofired catalyst perform better than the catalyst on carbon in both the methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR). Originally in the Ceramic, LTCC, Polymer and Conductive Materials session, then to Poster, then to Advanced Materials.
Yong Gao, Student
Florida International University
Miami, FL

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