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- W4311901696 endingPage "156131" @default.
- W4311901696 startingPage "156131" @default.
- W4311901696 abstract "Improving the CO-tolerant ability of Pt-based electrocatalysts is crucial for fuel cells fed with industrial byproduct hydrogen. Herein, we present a novel core-shell structured [email protected]/C catalyst consisting of ultrafine Pt nanoparticles (1.63 nm) as the core and ultrathin nitrogen-doped carbon layers (0.36 nm) as the shell. The catalyst exhibits excellent alkaline hydrogen oxidation reaction (HOR) activity with a mass activity of 187 A g−1Pt and a specific activity of 0.20 mA cm−2Pt, which are 1.3 and 2.2-folds to the counterpart Pt/C, respectively. More remarkably, it shows good anti CO-poisoning ability. In presence of H2 with 100 ppm CO, the HOR current degraded by 18.22% on 10% Pt/C versus only 4.81% on 10% [email protected]/C-400. The combined X-ray photo-electron spectrum (XPS) analysis, COad stripping, CO oxidation and Zeta potential measurements imply that hydroxyl adsorption is enhanced on the NC covered Pt in 10% [email protected]/C-400 possibly due to electron modulation induced by the strong metal and support interaction, which accelerates HOR kinetics and improvs anti-CO ability. This work provides a facile and feasible strategy to design efficient and CO-resistant Pt-based catalysts." @default.
- W4311901696 created "2023-01-02" @default.
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- W4311901696 date "2023-03-01" @default.
- W4311901696 modified "2023-10-18" @default.
- W4311901696 title "Steering Pt surface via N-doped carbon layer to highly active CO-tolerant hydrogen oxidation reaction catalyst in alkaline media" @default.
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- W4311901696 doi "https://doi.org/10.1016/j.apsusc.2022.156131" @default.
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