Here we report a series of novel nano-electrocatalysts and electrode structures prepared by thermal decomposition and electrochemical deposition of the corresponding metal chloride solutions on tungsten carbide and titanium mesh substrates for both DMFC and DEFC applications. In this structure, a fine Ti mesh, which is benefit of the methanol/ethanol transfer and carbon dioxide removal, is used as a substitute for the conventional gas diffusion layer in the anode. An optimal PtRu nanostructure catalyst has been identified for the DMFC anode. However, it is not so effective for the DEFC anode. Alternatively, an optimal PtSn nanostructure catalyst has been identified for the DEFC anode application. The preparation procedures and the main characteristics of these anodes studied by SEM, EDX, in-situ FTIR spectroscopy, half cell and single cell tests will be reported, and the possible reaction mechanism discussed.

Novel nano-electrocatalysts, electrode structure and membrane-electrode-assembly employing Ti-meshes for direct alcohol fuel cell applications

243rd National Meeting (2012)

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