A new sodium vanadyl fluorophosphate as a high-rate and stable cathode for aqueous hybrid sodium-zinc batteries

被引：23
|
作者：
Zhao, Xun [1 ]
Mao, Lei [1 ]
Cheng, Qihui [1 ]
Liao, Fangfang [1 ]
Yang, Guiyuan [1 ]
Chen, Lingyun [1 ]
机构：
[1] Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China
来源：
CHEMICAL COMMUNICATIONS | 2022年 / 58卷 / 54期
基金：
中国国家自然科学基金;
关键词：
HIGH-ENERGY;
D O I：
10.1039/d2cc02790a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Herein, a facile solvothermal method is used to prepare a new polyanion-type sodium vanadyl fluorophosphate (Na-x(VO)(2)(PO4)(y)F-z) for aqueous hybrid sodium-zinc batteries. The novel cathode delivers superior performance, which includes a high specific capacity of 87.2 mA h g(-1) at 0.05 A g(-1), good rate capability of 41.5 mA h g(-1) at 2 A g(-1), and high capacity retention. Based on ex situ XRD and XPS results, the Na+/Zn2+ co-insertion mechanism is proposed.
引用
收藏
页码：7522 / 7525
页数：4
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