| 锂离子电池用聚氧化乙烯电解质膜的阻抗性能研究 |
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| 引用本文： | 张枝芝.锂离子电池用聚氧化乙烯电解质膜的阻抗性能研究[J].塑料科技,2022(1). |
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| 作者姓名： | 张枝芝 |
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| 作者单位： | 黄河交通学院 |
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| 摘 要： | 为研究聚氧化乙烯(PEO)电解质膜的最佳配方,探究双三氟甲磺酰亚胺锂(LiTFSI)在不同含量下对PEO阻抗性能的影响。结果表明:n(EO)∶n(Li+)为12∶1,PEO电解质膜在阻塞电池、锂对称电池以及全电池中均具有最低的阻抗值,说明其具有较高的离子电导率和较好的界面接触。经过全电池循环测试,证实最佳样品具有良好的循环性能和实际应用潜力。
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| 关 键 词： | 聚氧化乙烯 聚合物电解质 锂离子电池 电化学阻抗谱 |
Study on Impedance Performance of Polyethylene Oxide Electrolyte Membrane for Lithium Ion Batteries |
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| ZHANG Zhi-zhi.Study on Impedance Performance of Polyethylene Oxide Electrolyte Membrane for Lithium Ion Batteries[J].Plastics Science and Technology,2022(1). |
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| Authors: | ZHANG Zhi-zhi |
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| Affiliation: | (Huanghe Jiaotong University,Jiaozuo 454950,China) |
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| Abstract: | In order to study the best formula of polyethylene oxide(PEO) electrolyte membrane, the effect of lithium bistrifluoromethanesulfonyl imide(LiTFSI) on the impedance properties of PEO at different contents was investigated.The results show that when n(EO)∶ n(Li+) is 12∶ 1, PEO electrolyte film has the lowest impedance value in blocking battery, lithium symmetric battery and whole battery, indicating that it has high ionic conductivity and good interface contact. Through the full battery cycle test, the best sample has good cycle performance and practical application potential. |
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| Keywords: | Polyethylene oxide Polymer electrolyte Lithium ion battery Electrochemical impedance |
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