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• W4317103691 abstract "It is a vital requirement to explore high-efficiency and stable electrocatalysts for oxygen reduction reaction (ORR) to further relieve energy depletion. However, it is a critical challenge to develop low cost and high-quality carbon-based catalysts. Herein, a caffeine chelation-triggered pyrolysis approach was developed to construct graphene-wrapped Fe3C nanoparticles incorporated in hierarchically porous FeNC nanosheets (G-Fe3C/FeNC). The present Fe salt and its content as well as the pyrolysis temperature were carefully investigated in the control groups. The G-Fe3C/FeNC catalyst showed a more positive onset potential (Eonset = 1.09 V) and half-wave potential (E1/2 = 0.88 V) in a 0.1 M KOH solution, which outperformed commercial Pt/C (E1/2 = 0.83 V, Eonset = 0.95 V), showing the excellent catalytic performance for the ORR activity, coupled with remarkable stability (only 0.18 mV negative shift in E1/2 after 2000 cycles). This work provides some valuable insights for developing advanced electrocatalysts for energy storage and conversion related research." @default.
• W4317103691 created "2023-01-18" @default.
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• W4317103691 date "2023-05-01" @default.
• W4317103691 modified "2023-10-17" @default.
• W4317103691 title "Caffeine derived graphene-wrapped Fe3C nanoparticles entrapped in hierarchically porous Fe N C nanosheets for boosting oxygen reduction reaction" @default.
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• W4317103691 doi "https://doi.org/10.1016/j.jcis.2023.01.077" @default.
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