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  • Wood Carbon Based Single-Atom Catalyst for Rechargeable Zn-Air Batteries

    Author(s)
    Zhong, L
    Jiang, C
    Zheng, M
    Peng, X
    Liu, T
    Xi, S
    Chi, X
    Zhang, Q
    Gu, L
    Zhang, S
    Shi, G
    Zhang, L
    Wu, K
    Chen, Z
    et al.
    Griffith University Author(s)
    Zhang, Shanqing
    Zheng, Mengting
    Year published
    2021
    Metadata
    Show full item record
    Abstract
    Low-cost and efficient oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) bifunctional electrocatalysts are vital for the applications of rechargeable Zn-air batteries (ZABs). Given the high catalytic activity of single-atom catalysts (SACs), preparing SACs on a large scale for ZABs is desirable but remains challenging. Herein, in situ formation of single-atom Fe-N-C catalysts on plate wood-based porous carbon is achieved via a facile Lewis acid pretreatment and carbonization process. Lewis acid FeCl3 pretreatment on the cell wall of wood not only produces abundant microchannels but also successfully introduces ...
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    Low-cost and efficient oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) bifunctional electrocatalysts are vital for the applications of rechargeable Zn-air batteries (ZABs). Given the high catalytic activity of single-atom catalysts (SACs), preparing SACs on a large scale for ZABs is desirable but remains challenging. Herein, in situ formation of single-atom Fe-N-C catalysts on plate wood-based porous carbon is achieved via a facile Lewis acid pretreatment and carbonization process. Lewis acid FeCl3 pretreatment on the cell wall of wood not only produces abundant microchannels but also successfully introduces atomically dispersed Fe-N active species into the hierarchical structure. Such uniformly dispersive SACs on the hierarchical structure enhance the ORR/OER performance and durability. A ZAB using the catalyst in the cathode shows a high power density (70.2 mW cm-2, at quasi solid state) and long-term stability. This work provides a new path for the large-scale preparation of high-performance SACs.
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    Journal Title
    ACS Energy Letters
    Volume
    6
    Issue
    10
    DOI
    https://doi.org/10.1021/acsenergylett.1c01678
    Subject
    Materials engineering
    Nanotechnology
    Electrical engineering
    Publication URI
    http://hdl.handle.net/10072/409393
    Collection
    • Journal articles

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