锂单离子导电固态聚合物电解质

Single Lithium-Ion Conducting Solid Polymer Electrolytes

锂单离子导电固态聚合物电解质是一类锂离子迁移数接近1的锂离子导体,可以有效避免阴离子移动产生浓差极化,从而提高锂电池的容量以及循环性能,成为近年来固态聚合物电解质的研究热点。本文综述了锂单离子导电固态聚合物电解质的研究进展,重点关注了电导率和锂离子迁移数较高的体系,并简要评述了锂单离子导电固态聚合物电解质所面临的挑战以及发展前景。

Single lithium-ion conductors （SLICs）, which have anions covalently bonded to polymers or immobilized by anion acceptors, have been intensively studied. SLICs are generally accepted to have advantages over conventional salt-in-polymer electrolytes for application in lithium batteries due to the unity transference number and the absence of detrimental effect of anion polarization. By now, many types of SLICs have been reported, including organic polymers, organic-inorganic hybrid polymers and anion acceptors. In this paper, progresses in SLICs are reviewed, which mainly focused on their electrochemical properties, especially those with high ionic conductivity and high lithium-ion transference number. The current challenges and future perspectives in this field are also prospected.