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- W1985094406 abstract "Novel ultrafine nanoporous Pt–Cu alloy with a Pt:Cu stoichiometric ratio of 3:1 (np-Pt3Cu) has been prepared by mechanical alloying and subsequent two-step chemical dealloying. The obtained np-Pt3Cu has uniform and bicontinuous ligament(metal)-channel(void) structure with the ligament size of 3.3 ± 0.7 nm. To explore its potential application in energy conversion reactions, the np-Pt3Cu alloy has been examined as electrocatalyst for the operating reactions in direct methanol fuel cells (DMFCs). Compared with the commercial JM Pt/C, a benchmark catalyst extensively used in fuel cell research, the np-Pt3Cu alloy demonstrates better performance in both the methanol electro-oxidation and oxygen reduction reactions in acidic medium. Theoretical calculations reveal that the electronic structure of Pt has been modified with the shift of Pt d-band center due to alloying with Cu, which can decrease CO poisoning and enhance the methanol oxidation and oxygen reduction reaction activities." @default.
- W1985094406 created "2016-06-24" @default.
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- W1985094406 date "2015-04-01" @default.
- W1985094406 modified "2023-09-23" @default.
- W1985094406 title "Enhanced methanol electro-oxidation and oxygen reduction reaction performance of ultrafine nanoporous platinum–copper alloy: Experiment and density functional theory calculation" @default.
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- W1985094406 doi "https://doi.org/10.1016/j.jpowsour.2015.01.025" @default.
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