Methanol electrooxidation on carbon-supported Pt-WO3−x electrodes in sulphuric acid electrolyte
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- Shukla, A.K., Ravikumar, M.K., Aricò, S. et al. J Appl Electrochem (1995) 25: 528. doi:10.1007/BF00573210
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Electrooxidation of methanol has been studied in sulphuric acid electrolyte at 60°C on carbon-supported Pt-WO3−x electrodes employing varying amounts of WO3−x. It is found that the electrodes containing (3:1) Pt-WO3−x composite catalyst exhibit a higher catalytic activity towards methanol electrooxidation than platinized carbon electrodes without WO3−x. In the light of the XPS and XRD data on the carbon-supported (3:1) Pt-WOx sample, it is speculated that the WOx is present in the form of an oxyhydroxide, which can promote surface oxy-species on platinum by proton transfer.