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聚偏氟乙烯-六氟丙烯材料具有良好的耐化学腐蚀性、耐热性、机械性能等特点,是聚合物锂离子电池中重要的隔膜材料。但由于该材料存在结晶度较高、玻璃化温度高、孔隙率低等问题,需要进行改性。对近几年来国内外学者对该材料的改性研究进行了综述,总结出该材料的5种改性方法,即:有机聚合物改性法、纳米无机材料改性法、有机聚合物和无机纳米材料共混改性、稀土氧化物改性法、表面接枝改性法。最后对材料的发展前景进行了展望。
Polyvinylidene fluoride - hexafluoropropylene material has good chemical resistance, heat resistance, mechanical properties and other characteristics, polymer lithium-ion battery is an important separator material. However, due to the high crystallinity of the material, high glass transition temperature, low porosity and other issues, the need for modification. In recent years, domestic and foreign scholars reviewed the modification of the material, and summarized five kinds of modification methods of the material: organic polymer modification method, nano inorganic material modification method, organic polymer and inorganic Nano-material blending modification, rare earth oxide modification method, surface graft modification method Finally, the prospect of material development is prospected.