CAJ | 학술논문

聚偏氟乙烯-六氟丙烯[ P（ VDF-HFP）]具有良好的电化学稳定性及黏结性能，是静电纺丝法制备凝胶聚合物电解质的一个研究热点。采用不同浓度的P（ VDF-HFP）纺丝液制备了电纺膜，并进行了形态结构、力学性能、透气率、孔隙率和吸液率等性能的测试分析。结果表明：当纺丝液质量浓度为150g/L时，电纺膜纤维粗细均匀，表面形貌良好，断裂强度较高；随着纺丝液浓度的增大，电纺膜的透气率逐渐增大；当纺丝液质量浓度为130 g/L时，电纺膜的孔隙率和吸液率最高；用质量浓度为150 g/L的纺丝液制备的电纺膜组装的锂离子电池具有较高的放电电压，初始充放电效率达到98．75％。
취편불을희-륙불병희[ P（ VDF-HFP）]구유량호적전화학은정성급점결성능，시정전방사법제비응효취합물전해질적일개연구열점。채용불동농도적P（ VDF-HFP）방사액제비료전방막，병진행료형태결구、역학성능、투기솔、공극솔화흡액솔등성능적측시분석。결과표명：당방사액질량농도위150g/L시，전방막섬유조세균균，표면형모량호，단렬강도교고；수착방사액농도적증대，전방막적투기솔축점증대；당방사액질량농도위130 g/L시，전방막적공극솔화흡액솔최고；용질량농도위150 g/L적방사액제비적전방막조장적리리자전지구유교고적방전전압，초시충방전효솔체도98．75％。
Poly ( vinylidene fluoride-hexafluoropropylene ) [ P( VDF-HFP) ] has excellent electrochemical stability and bonding properties , and becomes a hotspot of electrospun gel polymer electrolyte research .The preparation of microporous fibrous membranes from P ( VDF-HFP) solution with different concentration by the electrospinning technique was discussed , and the performance , such as morphological structure , mechanical properties , air permeability , porosity and electrolyte uptake was analyzed .Experimental results showed that: when the concentration was 150 g/L, the electrospun membranes had uniform fiber diameter and good surface morphology , also the membranes showed excellent mechanical properties;with the increase of solution concentration , the air permeability of the electrospun membranes increased gradually;however the membranes electrospun from the concentration of 130 g/L had the highest porosity and electrolyte uptake .The lithium ion batterys of which the membranes were electrospun from the solution concentration of 150 g/L possessed high discharge voltage and initial charge-discharge efficiency of 98.75%.