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A nanoporous oxide interlayer makes a better Pt catalyst on a metallic substrate: Nanoflowers on a nanotube bed |
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| Authors: | Hongyi Li Jinshu Wang Man Liu Hong Wang Penglei Su Junshu Wu Ju Li |
| Affiliation: | 1. Key Laboratory of Advanced Materials, College of Materials and Engineering, Beijing University of Technology, Beijing, 100124, China 2. Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA |
| Abstract: | To improve the contact between platinum catalyst and titanium substrate, a layer of TiO2 nanotube arrays has been synthesized before depositing Pt nanoflowers by pulse electrodeposition. Dramatic improvements in electrocatalytic activity (3×) and stability (60×) for methanol oxidation were found, suggesting promising applications in direct methanol fuel cells. The 3× and 60× improvements persist for Pt/Pd catalysts used to overcome the CO poisoning problem. |
| Keywords: | electrocatalyst titanium dioxide nanotube platinum nanoflower catalytic activity cycle life |
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