锂离子电池功能隔膜的研究进展

Research progress in the functional separator for lithium-ion battery

隔膜作为区隔电化学过程电子得失反应的阻隔物,是电池完成能量转换与获得电子电功的重要组件.在实际应用中,隔膜材料在很大程度上决定了电池的安全性能.此外,隔膜对于电池的影响还表现在电化学性能、加工与使用过程等多个方面.随着人们对锂离子电池性能提升的期待越来越高,以往作为非活性材料的隔膜将发挥更大的作用,其进一步功能化的要求也越来越迫切.该文系统总结了近年来锂离子电池功能隔膜,包括高安全功能隔膜及化学/电化学活性功能隔膜的研究进展,并对隔膜的研究及发展方向进行了展望,以期为相关领域研究人员提供一些借鉴和有益思路.

As a barrier to distinguish the electron gain and loss reaction during an electrochemical process,a separator is the key material for energy conversion.In practical application,a separator determines the safety of the battery to a great extent.In addition,a separator has a great influence on the electrochemical performance,processing and application.With increasing expectation to improve the performance of lithium-ion battery,a separator,although regarded as a non-active material in the past,will play a greater role,and its further functional requirements are becoming more and more urgent.This paper systematically summarizes the research progress in the functional separator with high safety and chemical/electrochemical activity for lithium-ion battery in recent years and give a envision of the research and development direction of the separator in order to provide some reference and useful ideas for researchers in related fields.