PVA-ZrO2 multilayer composite separator with enhanced electrolyte property and mechanical strength for lithium-ion batteries
By Xiao, Wei; Song, Jian; Huang, Liang; Yang, Zhanxu; Qiao, Qingdong
Published in Ceramics International
Ceramics International
2020
Abstract
The separator has an important influence on safety and charge-discharge performances of lithium-ion batteries. In this work, a multilayer composite separator is designed and fabricated by alternate electrospinning of poly (vinyl alcohol) (PVA) nanofibers and electrospraying of ZrO2 nanoparticles. The physical-chemical properties of the separator are systematically investigated. The design of such a layer-by-layer structure not only enhances the electrolyte uptake/retention and thermal resistance but also improves the mechanical strength of the composite separator. In comparison with PE separator and pure PVA electrospun separator, this PVA-ZrO2 composite separator exhibits satisfactory thermal resistance (area shrinkage ratio of 0% at 160