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- W4285019251 abstract "Iridium nanoparticles (NPs) deliver excellent performance in electrocatalytic hydrogen evolution reaction (HER), but the high cost hinders their further application. Vanadium carbide (VC) is an inexpensive and stable material with a platinum-like d band center and suitable absorption/desorption capacity for active species in HER. However, there are few reports that combine the above two materials into a composited catalyst hitherto. In this work, we employed decavanadate as a precursor to prepare highly-dispersed VC NPs, which were further used as promoters for Ir NPs. The obtained Ir/VC/C nanocomposite exhibited low overpotentials and good stability under alkaline and acid conditions, even better than the commercial Pt/C. The water-splitting process is promoted by the synergistic effect between the strong electron-withdrawing nature of VC and the surface hydrogen adsorption of Ir NPs. This work demonstrates that VC can remarkably improve the electrocatalytic performance of Ir NPs, and the Ir/VC/C nanocomposite is a promising and alternative electrocatalyst for HER." @default.
- W4285019251 created "2022-07-12" @default.
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- W4285019251 date "2022-09-01" @default.
- W4285019251 modified "2023-10-13" @default.
- W4285019251 title "Polyoxovanadate-derived Ir/VC/C nanocomposite for electrocatalytic hydrogen production" @default.
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- W4285019251 doi "https://doi.org/10.1016/j.inoche.2022.109742" @default.
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