基于钠离子导体固体电解质研究进展

Research Progress of Solid Electrolyte Based on Sodium Ion Conductor

目前,电子器件所使用的多是液态电解液的二次电池,而液态电解液存在易漏液、侵蚀电极、在温度过高时造成电池热失控,可能引起燃烧甚至于爆炸等问题。使用固态电解质,发展全固态电池,可使产品微型化,形状多样化,还可以避免使用液态电解质会出现的诸多问题,从而极大地减少安全隐患。如今,基于钠离子导体的固体电解质研究有了极大进展,出现了包括氧化物型、硫化物型以及氢化物型等钠离子导体。固体电解质发展的重点在于如何提高离子电导率。文章梳理了近年来关于钠离子固体电解质的相关研究,重点概述了提高钠离子导体离子电导率方法的研究进展。

At present, the use of electronic devices is the liquid electrolyte of the secondary battery, and the liquid electrolyte is prone to leakage, erosion of the electrode, when the temperature is too high to cause the battery thermal control may occur combustion or even explosion and other problems. The use of solid electrolyte, the development of all-solid battery, can make the product miniaturization, shape diversification, but also can avoid the use of liquid electrolyte will appear many problems, so as to greatly reduce the safety risks. Nowadays, the research of solid electrolyte based on sodium ion conductor has made great progress, including oxide type, sulfide type and hydride type sodium ion conductor. The development of solid electrolytes focuses on how to improve ionic conductivity. The paper reviews the recent studies on sodium ion solid electrolytes and focuses on the research progress of methods to improve the ionic conductivity of sodium ion conductors.