Towards High-Performance Aqueous Sodium-Ion Batteries: Stabilizing the Solid/Liquid Interface for NASICON-Type Na2 VTi(PO4 )3 using Concentrated Electrolytes

ChemSusChem
Huang ZhangStefano Passerini

Abstract

Aqueous Na-ion batteries may offer a solution to the cost and safety issues of high-energy batteries. However, substantial challenges remain in the development of electrode materials and electrolytes enabling high performance and long cycle life. Herein, we report the characterization of a symmetric Na-ion battery with a NASICON-type Na2 VTi(PO4 )3 electrode material in conventional aqueous and "water-in-salt" electrolytes. Extremely stable cycling performance for 1000 cycles at a high rate (20 C) is found with the highly concentrated aqueous electrolytes owing to the formation of a resistive but protective interphase between the electrode and electrolyte. These results provide important insight for the development of aqueous Na-ion batteries with stable long-term cycling performance for large-scale energy storage.

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Citations

Apr 28, 2020·Angewandte Chemie·Huang ZhangStefano Passerini
Mar 31, 2020·Chemical Society Reviews·Ting JinLifang Jiao
Mar 11, 2021·Angewandte Chemie·Ting JinChunsheng Wang
May 12, 2021·ChemSusChem·Mona Amiri, Daniel Bélanger
Aug 4, 2021·Chemical Society Reviews·Xiulin Fan, Chunsheng Wang

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