A Na3V2(PO4)2O1.6F1.4 Cathode of Zn-Ion Battery Enabled by a Water-in-Bisalt Electrolyte

Qiao Ni, Heng Jiang, Sean Sandstrom, Ying Bai*, Haixia Ren, Xianyong Wu, Qiubo Guo, Dongxu Yu, Chuan Wu*, Xiulei Ji*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

122 引用 (Scopus)

摘要

Aqueous zinc-ion batteries are receiving increasing attention; however, the development of high-voltage cathodes is limited by the narrow voltage window of conventional aqueous electrolytes. Herein, it is reported that Na3V2(PO4)2O1.6F1.4 exhibits the excellent performance, optimal to date, among polyanion cathode materials in a novel neutral water-in-bisalts electrolyte of 25 m ZnCl2 + 5 m NH4Cl. It delivers a reversible capacity of 155 mAh g−1 at 50 mA g−1, a high average operating potential of ≈1.46 V, and stable cyclability of 7000 cycles at 2 A g−1.

源语言英语
文章编号2003511
期刊Advanced Functional Materials
30
36
DOI
出版状态已出版 - 1 9月 2020

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