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- W3086190888 abstract "Methanol crossover is one of the largest problems in direct methanol fuel cells (DMFCs). Methanol passing from the anode to the cathode through the membrane is oxidized at the cathode, degrading the DMFC performance, and the intermediates of the methanol oxidation reaction (MOR) cause cathode catalyst poisoning. Therefore, it is essential to develop a cathode catalyst capable of inhibiting MOR while promoting the oxygen reduction reaction (ORR), which is a typical cathode reaction in DMFCs. In this study, a carbon-encapsulated Pt cathode catalyst was synthesized for this purpose. The catalyst was simply synthesized by heat treatment of Pt–aniline complex-coated carbon nanofibers. The carbon shell of the catalyst was effective in inhibiting methanol from accessing the Pt core, and this effect became more prominent as the graphitization degree of the carbon shell increased. Meanwhile, the carbon shell allowed O2 to permeate regardless of the graphitization degree, enabling the Pt core to participate in ORR. The synthesized catalyst showed higher performance and stability in single-cell tests under various conditions compared to commercial Pt/C." @default.
- W3086190888 created "2020-09-21" @default.
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- W3086190888 date "2020-09-14" @default.
- W3086190888 modified "2023-10-14" @default.
- W3086190888 title "Methanol Tolerant Pt–C Core–Shell Cathode Catalyst for Direct Methanol Fuel Cells" @default.
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- W3086190888 doi "https://doi.org/10.1021/acsami.0c07812" @default.
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