| 引用本文: | 刘辉,顾大明,白继元.倒相法制备PVDF-HFP基复合微孔聚合物电解质[J].哈尔滨工业大学学报,2012,44(7):64.DOI:10.11918/j.issn.0367-6234.2012.07.012 |
| LIU Hui,GU Da-ming,BAI Ji-yuan.PVDF-HFP matrix complex micro-porous polymer electrolyte prepared by phase inversion method[J].Journal of Harbin Institute of Technology,2012,44(7):64.DOI:10.11918/j.issn.0367-6234.2012.07.012 |
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| 摘要: |
| 为改善纳米粒子在聚合物电解质中的分散效果,采用倒相制膜法,以纳米SiO2为填料,以OP-10为分散剂,制备复合微孔聚偏氟乙烯-六氟丙烯基电解质PVDF-HFP-SiO2(OP-10)．用SEM、XRD、交流阻抗法等测试手段对电解质的微观形貌、内部结构和电化学相关性能等进行表征,结果表明:SiO2的加入降低了聚合物电解质膜的结晶度,增强了电解质的拉伸强度,提高了PVDF-HFP-SiO2(OP-10)聚合物电解质的电导率,在20 ℃时,可达到490×10-3 S·cm-1,电化学稳定窗口为53 V,电解质的离子迁移数为083．分散剂OP-10的加入改善了纳米SiO2与基质的界面相容性,改善了SiO2在基质中的分散度． |
| 关键词: 聚合物电解质 纳米SiO2 倒相法 离子电导率 聚偏氟乙烯-六氟丙烯共聚物 |
| DOI：10.11918/j.issn.0367-6234.2012.07.012 |
| 分类号:O636; O641: TM9129 |
| 基金项目:哈尔滨市学科带头人基金资助项目(2007RFXXG014). |
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| PVDF-HFP matrix complex micro-porous polymer electrolyte prepared by phase inversion method |
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LIU Hui1,2, GU Da-ming1, BAI Ji-yuan3
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1.Dept. of Chemistry, Harbin Institute of Technology, 150001 Harbin, China;2.Institute of Materials and
Chemical Engineering, Heilongjiang Institute of Technology, 150050 Harbin, China;3.Institute of Electrical and
Information Engineering,Heilongjiang Institute of Technology, 150050 Harbin, China
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| Abstract: |
| To improve the distribution properties of nanoparticles in the polymer electrolyte, micro-porous polymer electrolyte PVDF-HFP-SiO2(OP-10) was prepared with phase inversion method by adopting nano-sized SiO2 as the inorganic filler and OP-10 as dispersant. The morphology, crystal structure and electrochemical properties of the electrolyte were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), electrochemical impedance spectra (EIS). The results showed that the addition of nano-SiO2 suppressed the crystallinity of polymer electrolyte and enhanced the tensile intensity. The ionic conductivity was improved, the highest ionic conductivity (20 ℃） of the PVDF-HFP-SiO2(OP-10) polymer electrolyte was 490×10-3S·cm-1,with a high electrochemical stability window of 53 V, and the corresponding cation transference number was 083. The distribution of SiO2 and interfacial compatibility of nanometer particles were improved by the addition of OP-10. |
| Key words: polymer electrolyte membrane nanometer SiO2 phase inversion method ionic conductivity PVDF-HFP |
