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- W2959888979 abstract "Rational design and preparation of earth-abundant materials with high-efficiency oxygen reduction reaction (ORR) performance is pivotal for fuel cells. Here, an atomically dispersed Mn- and nitrogen-codoped graphene material ([email protected]) is developed by a facile high-temperature annealing and subsequent acid-leaching strategy. The atomically dispersion of manganese in [email protected] is confirmed by aberration-corrected electron microscopy with atomic resolution and the main structure of MnN4 moiety is resolved by X-ray absorption spectroscopy. The [email protected] catalyst shows an onset potential and half-wave potential of 0.95 and 0.82 V vs RHE in 0.1 M KOH solution, respectively. Theoretical calculations manifest that MnN4 moiety embedded into graphene is the active center for efficient ORR, on which the theoretical overpotential is 0.63 V, lower than that on graphitic-N (1.18 V), pyridinic-N (1.58 V), MnN3-G (1.48 V), MnN3O-G (2.33 V), and Mn3O4 (001) surface (0.86 V)." @default.
- W2959888979 created "2019-07-23" @default.
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- W2959888979 date "2019-11-01" @default.
- W2959888979 modified "2023-10-18" @default.
- W2959888979 title "Atomically dispersed manganese-based catalysts for efficient catalysis of oxygen reduction reaction" @default.
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- W2959888979 doi "https://doi.org/10.1016/j.apcatb.2019.117930" @default.
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