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- W4313443076 abstract "Exploring highly-efficient and low-cost non-precious metal electrocatalysts for electrochemical reactions such as oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is of crucial importance for clean and renewable energy technologies. Herein, we report the synthesis of Co2P encapsulated in N- and O- co-doped carbons (Co2[email protected]), which can serve as excellent noble metal-free bifunctional electrocatalysts for OER and ORR in alkaline media. Especially, the Co2[email protected] electrocatalyst exhibits a low overpotential of 330 mV to deliver the current density of 10 mA cm−2 for OER in 1.0 M KOH solution, with a small Tafel slope of 97 mV dec−1. With respect to ORR activity, Co2[email protected] gives positive onset (Eonset) and half-wave (E1/2) potentials of 0.90 and 0.75 V (vs. RHE) in 0.1 M KOH electrolyte, respectively. Additionally, it presents better methanol tolerance and long-term durability as compared to the commercial Pt/C (20 wt·%) catalyst. The high electrocatalytic activity and good long-term stability toward OER and ORR can be attributed to the conductive heteroatoms-doped carbon layer, the embedded Co2P active sites and the synergistic effects between them. The strong synergism can significantly promote the electron transfer during the reaction and enhance the OER and ORR performance." @default.
- W4313443076 created "2023-01-06" @default.
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- W4313443076 date "2023-03-01" @default.
- W4313443076 modified "2023-10-16" @default.
- W4313443076 title "Co2P encapsulated in N, O co-doped carbons as bifunctional electrocatalysts for oxygen evolution and reduction reactions" @default.
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- W4313443076 doi "https://doi.org/10.1016/j.ijhydene.2022.11.336" @default.
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