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- W3143722701 abstract "Single atom catalysts (SACs) with unique structure gain much interest in the field of electrocatalysis and show a broad application prospect in long-life rechargeable Zn-air batteries. However, ingenious design and preparation of bi-metal SACs is still difficult to further enhance the bifunctional electrocatalytic activity. Herein, modified zeolitic imidazolate frameworks (SiO2@Fe-ZIF-8/67) was facilely designed to preparation atomically dispersed Fe and Co doping 3D nitrogen-doped carbon nanosheets ([email protected]). The Fe or Co single atoms are identified to be coordinated with N atoms and form FeN4, CoN4 or N3Fe-CoN3 anchored on 3D defect carbon, which act as reactive sites for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Through synergetic coupling effect, [email protected] exhibits excellent electrochemical performance with ORR/OER potential gap of 0.80 V. Density functional theory (DFT) calculations further indicate the synergistic effect between Fe and Co in [email protected] towards the enhancing ORR activity. The as-prepared catalyst assembled Zn-air battery shows a maximum power density, and superb cycling stability, surpassing that based on commercial Pt/C + IrO2. Results from this study may provide a facile method for precious control of dual-metal single sites doped carbon with highly activity and durability for bifunctional electrocatalysis." @default.
- W3143722701 created "2021-04-13" @default.
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- W3143722701 date "2021-05-01" @default.
- W3143722701 modified "2023-10-17" @default.
- W3143722701 title "Bi-functional electrocatalysis through synergetic coupling strategy of atomically dispersed Fe and Co active sites anchored on 3D nitrogen-doped carbon sheets for Zn-air battery" @default.
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- W3143722701 doi "https://doi.org/10.1016/j.jcat.2021.03.030" @default.
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