1. Enhancing the kinetics of vanadium oxides via conducting polymer and metal ions co-intercalation for high-performance aqueous zinc-ions batteries.
- Author
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Yan, Xiaoteng, Feng, Xiaochen, Hao, Boya, Liu, Jiajun, Yu, Yiren, Qi, Junjie, Wang, Honghai, Wang, Zhiying, Hu, Yuqi, Fan, Xiaobin, Li, Chunli, and Liu, Jiapeng
- Subjects
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ORGANIC conductors , *CONDUCTING polymers , *VANADIUM oxide , *POLYANILINES , *ZINC ions , *METAL ions , *MAGNESIUM ions , *ELECTRIC conductivity - Abstract
[Display omitted] Aqueous zinc-ions batteries with low cost, reliable safety, high theoretical specific capacity and eco-friendliness have captured conspicuous attention in large-scale energy storage. However, the developed cathodes often suffer from low electrical conductivity and sluggish Zn2+ diffusion kinetics, which severely hampers the development of aqueous zinc-ions batteries. Herein, we successfully prepare Mg/PANI/V 2 O 5 •nH 2 O (MPVO) nanosheets through conducting polymers (polyaniline) and metal ions (Mg2+) co-intercalated strategy and systematically explore its electrochemical performance as cathode materials for aqueous zinc-ion batteries. Benefitting from the synergistic effect of polyaniline and Mg2+ co-intercalated, the MPVO exhibits larger interlayer spacing and higher electrical conductivity than the single guest intercalation, which significantly enhances the electrochemical kinetics. As a consequence, the MPVO cathodes deliver superior specific capacity, rate capability and long-term cycling performance. Moreover, multiple characterizations and theoretical calculations are executed to expound the relevant mechanism. Therefore, this work provides a novel thought for the design of high-performance cathode materials for aqueous ZIBs. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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