A new sodium vanadyl fluorophosphate as a high-rate and stable cathode for aqueous hybrid sodium–zinc batteries. Issue 54 (14th June 2022)

• Record Type: Journal Article
• Authors: Zhao, Xun; Mao, Lei; Cheng, Qihui; Liao, Fangfang; Yang, Guiyuan; Chen, Lingyun
• Is Part Of: Chemical communications. Volume 58:Issue 54(2022)
• Page Start: 7522
• Page End: 7525
• Publication Date: 2022-06-14
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d2cc02790a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A new sodium vanadyl fluorophosphate (Na(VO)2 (PO4 )1.5 F0.5 ) as a high-rate and stable cathode is prepared by a simple solvothermal method, which delivers superior aqueous energy storage performance based on the Na + /Zn 2+ co-insertion mechanism. Abstract : 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 + /Zn 2+ co-insertion mechanism is proposed.