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Issue 8, 2019
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A hybrid energy storage mechanism of carbonous anodes harvesting superior rate capability and long cycle life for sodium/potassium storage

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Abstract

Engineering of carbonous materials with excellent electrochemical performances for both sodium and potassium ion batteries is still challenging. In this work, N-doped interconnected carbon spheres with ultrathin nanosheets and expanded interplanar spacing (UNCns) were fabricated by a simple and scalable template-assisted spray pyrolysis method. The hybrid ion storage mechanism endows the UNCns with excellent rate performance and ultra-long cycling lifespan. Moreover, it has been found that the difference between sodium and potassium storage mechanisms in the UNCns strongly influences their performance, which is inspiring to further improve the electrochemical performance of electrode materials by coordinating adsorption (capacitive-controlled) energy storage and redox (diffusion-controlled) energy storage through controlling structural construction.

Graphical abstract: A hybrid energy storage mechanism of carbonous anodes harvesting superior rate capability and long cycle life for sodium/potassium storage

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Publication details

The article was received on 13 Dec 2018, accepted on 14 Jan 2019 and first published on 16 Jan 2019


Article type: Paper
DOI: 10.1039/C8TA12040D
Citation: J. Mater. Chem. A, 2019,7, 3673-3681

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    A hybrid energy storage mechanism of carbonous anodes harvesting superior rate capability and long cycle life for sodium/potassium storage

    J. Qin, H. M. Kheimeh Sari, C. He and X. Li, J. Mater. Chem. A, 2019, 7, 3673
    DOI: 10.1039/C8TA12040D

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