含锂聚芳醚酮电解质的分子设计与性能研究

发布时间：2018-03-21 06:27

本文选题：聚芳醚酮　切入点：聚合物电解质　出处：《吉林大学》2017年硕士论文　论文类型：学位论文

【摘要】：本论文以含萘单体DMNF为基础,设计合成了两种含锂聚合物电解质并进行性能研究,探索聚芳醚酮材料在传导锂离子方面的应用前景。首先,通过去甲基、接枝等方法,将含有磺酸基团的烷基链接枝在含萘环结构的聚芳醚酮上,经过锂化处理后得到一系列接枝率可控的单离子导体聚合物(SNPAEK-Li-x)电解质膜。性能研究表明:通过与目前研究的全固态单离子导体聚合物电解质比较可以看到,该电解质膜室温下传导率与其基本一致,机械性能与热稳定性都有显著进步。此外,我们还将PEO链段与聚芳醚酮链段共聚,制备了不同共聚比例的共聚物PAEK-co-PEO,添加电解质锂盐制备成全固态聚合物电解质。性能测试研究表明:该全固态聚合物电解质在一定程度保留聚芳醚酮材料优良机械性能与热稳定性的同时,具有较高的离子传导率。通过两个实验方案的设计与探究,我们看到聚芳醚酮材料在传导锂离子的聚合物电解质领域具有一定的研究价值。
[Abstract]:Based on naphthalene monomer DMNF, two kinds of lithium-containing polymer electrolytes were designed and synthesized, and their properties were studied. The alkyl linked branch containing sulfonic group was added to the poly (aryl ether ketone) containing naphthalene ring structure. After lithium treatment, a series of single ion conductor polymer (SNPAEK-Li-x) electrolyte membranes with controllable grafting rate were obtained. The conductivity of the electrolyte membrane at room temperature is basically the same as that of the electrolyte membrane. The mechanical properties and thermal stability of the electrolyte membrane are improved significantly. In addition, the PEO chain segment is copolymerized with the poly (aryl ether ketone) segment. The copolymers PAEK-co-PEO with different copolymers were prepared, and the polymer electrolytes were prepared by adding lithium salts. The properties of the polymer electrolytes were tested and the results showed that the polymer electrolytes kept the excellent mechanical properties of the polyaryl ether ketone materials to a certain extent. At the same time of performance and thermal stability, Through the design and exploration of two experimental schemes, we find that the poly (aryl ether ketone) material has certain research value in the field of polymer electrolyte conducting lithium ion.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：O646;TM912

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