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首页> 美国卫生研究院文献>Nanoscale Research Letters >Electrophysical behavior of ion-conductive organic-inorganic polymer system based on aliphatic epoxy resin and salt of lithium perchlorate
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Electrophysical behavior of ion-conductive organic-inorganic polymer system based on aliphatic epoxy resin and salt of lithium perchlorate

机译：基于脂族环氧树脂和高氯酸锂盐的离子导电有机-无机聚合物体系的电物理行为

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AbstractIn the present work, ion-conductive hybrid organic-inorganic polymers based on epoxy oligomer of diglycide aliphatic ester of polyethylene glycol (DEG) and lithium perchlorate (LiClO4) were synthesized. The effect of LiClO4 content on the electrophysical properties of epoxy polymers has been studied by differential scanning calorimetry (DSC) and broadband dielectric spectroscopy (BDS). The effect of LiClO4 content on the structure has been studied by wide-angle X-ray scattering (WAXS). It was found that LiClO4 impacts on the structure of the synthesized hybrid epoxy polymers, probably, by formation of coordinative complexes {ether oxygen-lithium cations-ether oxygen} as evidenced from a significant increase in their glass transition temperatures with increasing LiClO4 concentration and WAXS studies. The presence of ether oxygen in DEG macromolecules provides a transfer mechanism of the lithium cations with the ether oxygen similar to polyethylene oxide (PEO). Thus, the obtained hybrid polymers have high values of ionic conductivity σ' (approximately 10−3 S/cm) and permittivity ϵ' (6 × 105) at elevated temperatures (200°С). On the other hand, DEG has higher heat resistance compared to PEO that makes these systems perspective as solid polymer electrolytes able to operate at high temperature.
机译：摘要在本工作中，合成了基于聚乙二醇二甘醇脂族酯（DEG）和高氯酸锂（LiClO4）的环氧低聚物的离子导电杂化有机-无机聚合物。通过差示扫描量热法（DSC）和宽带介电谱（BDS）研究了LiClO4含量对环氧聚合物电物理性能的影响。 LiClO4含量对结构的影响已通过广角X射线散射（WAXS）进行了研究。已发现，LiClO4可能通过形成配位配合物{醚氧-锂阳离子-醚氧}而影响合成的混合环氧聚合物的结构，这是由于随着LiClO4浓度和WAXS的增加，它们的玻璃化转变温度显着增加所证明的。学习。 DEG大分子中醚氧的存在提供了锂阳离子与醚氧的转移机理，类似于聚环氧乙烷（PEO）。因此，获得的杂化聚合物在高温下具有高的离子电导率σ'（约10 -3 S / cm）和介电常数ϵ'（6×10 5 ）。 （200°С）。另一方面，DEG与PEO相比具有更高的耐热性，这使这些系统成为固体聚合物电解质能够在高温下运行的观点。

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