高安全性阻燃动力锂离子电池隔膜

逐年加剧的能源短缺以及日益严重的环境污染问题使得发展电动汽车日益迫切.电动汽车安全问题对动力锂离子电池在大功率输出和高安全性能等方面提出了更高的要求.隔膜电解质体系是制约动力锂离子电池快速发展的重要瓶颈之一,因此,开发高性能的隔膜对提高动力锂离子电池的综合性能至关重要.本文综述了近年来隔膜材料的种类、制备工艺、性能以及本课题组在高安全性阻燃动力锂离子电池隔膜方面的研究进展,并对未来电池隔膜的发展方向进行了预期和展望.

Highly safe and flame-retardant separators for power lithium ion batteries

The development of alternative transportation such as electric （EV） or hybrid vehicles （HEV） was a key need for sustainable development because of exhausted fossil oil and severe environmental pollution. Hence, it＇s obligatory for us to explore high performance lithium batteries with high-power and necessary safety to power electric vehicles for the future society. Separators play an important role in the performance of batteries, however, commercial polyolefin separators restrict the future development of the power lithium batteries owing to poor dimensional thermal stability. Thus, it＇s a compelling challenge to exploit advanced separators for lithium batteries with high mechanical strength, superior thermal resistance and improved interfacial stability. Herein, this paper simply overviewed the development of separators in recent years and mainly reviewed the progress of our group in highly safe and flame-retardant separators for power lithium batteries. Finally, the outlook concerning the development trend of separators was given, and we hope our work paves the way for exploiting high performance lithium ion batteries in the future.