引用本文:
苏光耀, 李朝晖, 王霞瑜, 高德淑. 离子液体增塑的聚合物电解质[J]. 应用化学,
2004, 21(9): 900-904.
Citation: SU Guang-Yao, LI Zhao-Hui, WANG Xia-Yu, GAO De-Shu. Solid P(VDF-HFP) Electrolyte Plasticized with Ionic Liquid[J]. Chinese Journal of Applied Chemistry, 2004, 21(9): 900-904.
Citation: SU Guang-Yao, LI Zhao-Hui, WANG Xia-Yu, GAO De-Shu. Solid P(VDF-HFP) Electrolyte Plasticized with Ionic Liquid[J]. Chinese Journal of Applied Chemistry, 2004, 21(9): 900-904.
离子液体增塑的聚合物电解质
摘要:
采用微波合成法制备了室温离子液体3-乙基-1-甲基咪唑鎓四氟硼酸盐(EMIBF4),通过元素分析和FTIR光谱对其进行了表征。将其作为偏氟乙烯-六氟丙烯共聚物(P(VDF-HFP))基聚合物电解质的增塑剂,制备出弹性聚合物电解质膜。热失重分析显示EMIBF4可明显增强聚合物电解质的热稳定性。循环伏安法研究此种聚合物电解质膜对不同金属集流体(Ni,Al,Cu)的电化学稳定性。通过交流阻抗测试探讨了聚合物电解质(0.5 g P(VDF-HFP)/0.5 g EMIBF4/0.01 g LiBF4)的离子电导率,根据Arrhenius公式计算出该体系的离子输运活化能为7.27 kJ/mol。
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关键词:
- 偏氟乙烯六氟丙烯共聚物
- / 乙基甲基咪唑鎓四氟硼酸盐
- / 离子液体
- / 聚合物电解质
- / 微波合成
- / 电学行为
English
Solid P(VDF-HFP) Electrolyte Plasticized with Ionic Liquid
Abstract:
A room temperature ionic liquid of 3-ethyl-1-methyl-imidazolium tetrafluoroborate (EMIBF4) was prepared by microwave synthesis, and characterized by elemental analysis and FTIR spectrometry. The solid poly (vinylidene-co-hexafluoropropylene)(P(VDF-HFP)) electrolyte with EMIBF4 as a plasticizer had a decompostion temperature of up to 273℃. The electrochemical stability of the resulting polymer electrolyte was studied on different current collectors (Ni, Al, Cu) by cyclic voltagrammetry. The ionic conductivity of polymer electrolyte[0.5 g P(VDF-HFP)/0.5 g EMIBF4/0.01 g LiBF4] was investigated by ac impedance measurement, and the activation energy of ions transition was 7.27 kJ/mol as calculated according to Arrhenius equation.
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