Research progress on sodium ion solid-state electrolytes

doi:10.12028/j.issn.2095-4239.2017.0094

Abstract

Abstract: Sodium ion batteries, owing to the advantage of abundant resources and low cost, have captured increasing attention in recent years. National and international companies both at home and abroad have listed sodium ion batteries on the development plan, demonstrating the industrialization in the near future. The same as commercialized lithium ion batteries, conventional organic liquid electrolytes are adopted in sodium ion batteries, providing high ionic conductivity, while also bringing the safety issue such as leakages, fire, ect. Solid-state batteries, using solid electrolyte instead of the traditional organic liquid electrolyte, are the ideal chemical power of electric cars and large-scale energy storage as they have enhanced safety performance and high energy density. The researchers are exploring the solid state sodium batteries and lithium batteries at the same time. The main solid state electrolytes for sodium batteries can be divided into beta-Al2O3, NASICON, sulfide, polymer and boron hydride. In this paper, according to the solid electrolyte type, the development of the solid electrolyte materials and the corresponding solid state sodium batteries are reviewed.

Key words: solid-state electrolytes, sodium batteries, ionic conductivity, energy storage

LIU Lilu1, QI Xingguo1, SHAO Yuanjun1, PAN Du1,2, BAI Ying2, HU Yongsheng1, LI Hong1, CHEN Liquan1. Research progress on sodium ion solid-state electrolytes[J]. Energy Storage Science and Technology, 2017, 6(5): 961-980.

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