Issue 3, 2019

Engineering the interplanar spacing of ammonium vanadates as a 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 insights into the origin of the enhanced electrochemical behaviors. The NH4V4O10 compound, with the largest interplanar spacing (9.8 Å) and high diffusion coefficient, exhibits high energy density (374.3 W h kg−1) and power density (9000 W kg−1) as well as superior long-term cycling performance (a discharge capacity of 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 for 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.

Graphical abstract: Engineering the interplanar spacing of ammonium vanadates as a high-performance aqueous zinc-ion battery cathode

Supplementary files

Article information

Article type
Communication
Submitted
26 Sep 2018
Accepted
05 Dec 2018
First published
05 Dec 2018

J. Mater. Chem. A, 2019,7, 940-945

Engineering the interplanar spacing of ammonium vanadates as a 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, 2019, 7, 940 DOI: 10.1039/C8TA09338E

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