| PVP/PVDF-HFP微孔聚合物电解质的制备及性能 |
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| 引用本文： | 杨波,李新海,郭华军,王志兴,黄思林,李勇勇.PVP/PVDF-HFP微孔聚合物电解质的制备及性能[J].中南大学学报(自然科学版),2012,43(5):1628-1633. |
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| 作者姓名： | 杨波 李新海 郭华军 王志兴 黄思林 李勇勇 |
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| 作者单位： | 中南大学冶金科学与工程学院,湖南长沙,410083 |
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| 基金项目： | 湖南省重大科技专项项目 |
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| 摘 要： | 以聚偏氟乙烯-六氟丙烯(PVDF-HFP)和聚乙烯基吡咯烷酮(PVP)为基质材料,采用倒相法,在不同的PVP:PVDF-HFP配比下合成PVP/PVDF-HFP微孔聚合物电解质膜,将制备的微孔膜浸入电解液中活化得到了一系列锂离子电解质膜,并通过扫描电镜、力学、红外光谱进行能分析。研究结果表明:所制备的微孔聚合物电解质膜在PVP:PVDF-HFP配比(质量比)为0.2:1时综合性能最好,其吸液率为210%,抗拉强度为2.86 N/mm2,电导率为1.82×10-3 S/cm,电化学稳定窗口为5.7 V。
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| 关 键 词： | 聚合物电解质 锂离子电池 倒相法 离子电导率 |
Preparation and properties of PVP/PVDF-HFP microporous polymer electrolyte |
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| YANG Bo
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LI Xin-hai
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GUO Hua-jun
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WANG Zhi-xing
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HUANG Si-ling
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LI Yong-yong.Preparation and properties of PVP/PVDF-HFP microporous polymer electrolyte[J].Journal of Central South University:Science and Technology,2012,43(5):1628-1633. |
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| Authors: | YANG Bo LI Xin-hai GUO Hua-jun WANG Zhi-xing HUANG Si-ling LI Yong-yong |
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| Institution: | (School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | PVP/PVDF-HFP micropores membranes based on PVDF-HFP and PVP were prepared by the phase transfer method with different mass ratios of PVP to PVDF-HFP.The membranes were characterized by means of SEM,FTIR,AC impedance and linear scan voltammetry methods.The results show that the optimium mass ratio of PVP to PVDF-HFP is 0.2:1.The liquid absorption rate of the polymer electrolyte is 210%.It shows a good tensile strength of 2.86 N/mm2.The ionic conductivity is 1.82×10?3 S/cm,and the electrochemical stable window is 5.7 V. |
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| Keywords: | polymer electrolyte Li-ion battery phase inversion ionic conductivity |
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