采用溶液浇注法,以丙烯腈(AN)和聚乙二醇(PEG)制备了聚丙烯腈(PAN)-b-聚乙二醇-b-聚丙烯腈三嵌段共聚物(PAN-b-PEG-b-PAN),以其作为聚合物基体,以四乙基四氟硼酸铵(TEABF4)为电解质盐,采用二甲基甲酰胺(DMF)作为增塑剂,制备了TEABF4/PAN-b-PEG-b-PAN凝胶聚合物电解质。以活性炭作为电极制备柔性超级电容器,通过形貌表征和电化学性能测试探究TEABF4与PAN-b-PEG-b-PAN的最佳质量配比。结果表明:当TEABF4与PAN-b-PEG-b-PAN质量比为0.5时其性能最佳,电导率可达5.2×10-2S/cm、比电容为96.18F/g、能量密度为90.30Wh/Kg,5000次循环电容保持率为89％。
Using the method of casting with solution,with a triblock copolymer design of poly(acrylonitrile)-b-poly(ethylene glycol)-b-poly(acrylonitrile)(PAN-b-PEG-b-PAN) for a gel polymer electrolyte(GPE),four ethyl ammonium tetrafluoroborate(TEABF4) as the electrolyte salt,two methyl formamide(DMF) as plasticizer for preparing TEABF4/PAN-b-PEG-b-PAN gel polymer electrolyte for flexible supercapacitor based on activated carbon electrode.The performance of flexible supercapacitors under different TEABF4 and PAN-b-PEG-b-PAN mass ratio was explored.The results show that when the mass ratio of TEABF4 and PAN-b-PEG-b-PAN was 0.5,it had the best performance.The conductivity can reach 5.2×10-2S/cm,the specific capacitance was 96.18F/g,the energy density was 90.30Wh/Kg,and the capacitance retention of 5000 cycles charge and discharge was about 89%.
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基金资助
国家自然科学基金(61674113和21577088);山西省自然科学基金(201601D011040和2016011039)
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