水分对原位聚合固态电池性能的影响研究

Effects of moisture on performance of in-situ polymerized solid-state batteries

研究水分对电池性能的影响对生产企业提高产品性能和产品质量有重要意义。将聚丙烯(PP)隔膜和聚酯无纺布(PNW)隔膜分别作为聚碳酸亚乙烯酯(PVC)固态电解质的基底,通过原位聚合电解质的方法制备出PVC@PP和PVC@PNW两种固态聚合物锂电池。对两种电池的电化学性能和安全性能分别进行测试研究,由于PNW自身的三维结构且孔隙率较大的特点,其具有强吸水性,导致PVC@PNW原位聚合固态电池的性能劣于PVC@PP原位聚合固态电池。

Studying the effect of moisture on battery performance is of great significance for manufacturers to improve product performance and product quality.Polypropylene(PP)separator and polyester non-woven(PNW)separator were used as the substrates of polyvinylidene carbonate(PVC)solid electrolyte,respectively,and PVC@PP and PVC@PNW solid-state polymer lithium batteries were prepared by in-situ polyelectrolyte method.The electrochemical performance and safety performance of the two batteries were tested and studied respectively.Due to the three-dimensional structure and large porosity of PNW itself,it has strong water absorption,which leads to the in-situ polymerization of PVC@PNW.The performances of PVC@PNW in-situ polymerized solid-state batteries are inferior to that of PVC@PP in-situ polymerized solid-state batteries.