A Safer Sodium-Ion Battery Based on Nonflammable Organic Phosphate Electrolyte
Overview
Affiliations
Sodium-ion batteries are now considered as a low-cost alternative to lithium-ion technologies for large-scale energy storage applications; however, their safety is still a matter of great concern for practical applications. In this paper, a safer sodium-ion battery is proposed by introducing a nonflammable phosphate electrolyte (trimethyl phosphate, TMP) coupled with NaNiMnFeO cathode and Sb-based alloy anode. The physical and electrochemical compatibilities of the TMP electrolyte are investigated by igniting, ionic conductivity, cyclic voltammetry, and charge-discharge measurements. The results exhibit that the TMP electrolyte with FEC additive is completely nonflammable and has wide electrochemical window (0-4.5 V vs. Na/Na), in which both the Sb-based anode and NaNiMnFeO cathode show high reversible capacity and cycling stability, similarly as in carbonate electrolyte. Based on these results, a nonflammable sodium-ion battery is constructed by use of Sb anode, NaNiMnFeO cathode, and TMP + 10 vol% FEC electrolyte, which works very well with considerable capacity and cyclability, demonstrating a promising prospect to build safer sodium-ion batteries for large-scale energy storage applications.
Structural, morphological, electrical, and dielectric properties of NaCu(SiO) for ASSIBs.
Ben Bechir M, Akermi M RSC Adv. 2024; 14(13):9228-9242.
PMID: 38505384 PMC: 10949118. DOI: 10.1039/d4ra01454e.
Electrolyte Solvation Structure Design for Sodium Ion Batteries.
Tian Z, Zou Y, Liu G, Wang Y, Yin J, Ming J Adv Sci (Weinh). 2022; 9(22):e2201207.
PMID: 35661442 PMC: 9353483. DOI: 10.1002/advs.202201207.
NASICON-Structured NaTi(PO) for Sustainable Energy Storage.
Wu M, Ni W, Hu J, Ma J Nanomicro Lett. 2021; 11(1):44.
PMID: 34138016 PMC: 7770786. DOI: 10.1007/s40820-019-0273-1.
A redox-active organic salt for safer Na-ion batteries.
Ji W, Huang H, Zhang X, Zheng D, Ding T, Lambert T Nano Energy. 2021; 72.
PMID: 34109105 PMC: 8186495. DOI: 10.1016/j.nanoen.2020.104705.
A Bifunctional Fluorophosphate Electrolyte for Safer Sodium-Ion Batteries.
Jiang X, Liu X, Zeng Z, Xiao L, Ai X, Yang H iScience. 2018; 10:114-122.
PMID: 30513393 PMC: 6279964. DOI: 10.1016/j.isci.2018.11.020.