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Engineering the Interplanar Spacing of Ammonium Vanadates as High-performance Aqueous Zinc-ion Battery Cathode

Abstract

We report the engineering of the interplanar spacing of ammonium vanadates to achieve the optimal electrochemical performance as cathodes for aqueous zinc-ion batteries (ZIBs) and provide origin insights into the enhanced electrochemical behaviors. The NH4V4O10 compound, with the largest interplanar spacing (9.8 Å) and high diffusion coefficient, demonstrates high energy density (374.3 Wh kg-1) and power density (9000 W kg-1) as well as a superior long-term cycling performance (255.5 mA h g-1 can be maintained after 1000 cycles at 10 A g-1). With the merits of impressive energy density and long-cycle life, the NH4V4O10 might be a new promising cathode in aqueous ZIBs for grid energy storage applications. This work provides a direction for choosing or designing the ideal high-performance cathode for aqueous ZIBs and other advanced battery systems.

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Publication details

The article was received on 26 Sep 2018, accepted on 05 Dec 2018 and first published on 05 Dec 2018


Article type: Communication
DOI: 10.1039/C8TA09338E
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Engineering the Interplanar Spacing of Ammonium Vanadates as High-performance Aqueous Zinc-ion Battery Cathode

    B. Tang, J. Zhou, G. Fang, F. Liu, C. Zhu, C. Wang, A. Pan and S. Liang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA09338E

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