Abstract
The corrosion performance of TiO2 doped polypyrrole coated (PPy-TiO2) aluminum and application as anode material for direct methanol fuel cell were investigated. The surface morphology was analyzed by scanning electron microscopy, atomic force microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction technique. The conductivity values of coatings were measured with four probe technique. The electrochemical impedance spectroscopy and anodic polarization obtained at periodic intervals for 168h. The corrosion resistance of Al/PPy-TiO2 is almost 5 times higher than Al for 168h immersion. PPy-TiO2 coating has better electrocatalytic activity than PPy for methanol oxidation reaction.
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