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Enhanced methanol oxidation performance on platinum with butterfly-scale architectures: toward structural design of efficient electrocatalysts
- Guo, Xingmei, Zhou, Han, Zhang, Di, Fan, Tongxiang
- RSC advances 2013 v.4 no.8 pp. 3748-3752
- catalysts, catalytic activity, electrochemistry, finite element analysis, mass transfer, methanol, oxidation, platinum
- Enhanced methanol oxidation performance was achieved by combining elaborate butterfly-scale architectures into platinum electrocatalysts using an electroless deposition-detemplating method. The electrochemically active surface area and the forward peak current density for methanol oxidation were dramatically increased by 5 and 5.2 times, respectively, for lamellar-ridge architectured Pt compared to its unarchitectured counterpart. Excellent mass transport properties and efficient catalytic surface accessibility were further demonstrated by finite element simulation.