膜科学与技术

聚碳酸酯基聚合物电解质及其改性研究进展

作者：丁青，丁培沛，李明晔，郭红霞，李钒，秦振平

单位： 1.北京工业大学材料与制造学部，北京 100124；2. 绿色催化与分离北京市重点实验室，北京工业大学环境与生命学部，北京 100124

关键词：聚碳酸酯；固体聚合物电解质；改性；锂离子电池

出版年,卷(期):页码： 2023,43(3):167-175

摘要：

锂离子电池具有能量密度高、工作电压宽、循环寿命长、环境友好等优点，已被广泛用于移动电子设备和电动车等领域。为克服液态锂离子电池存在的缺陷和安全隐患等问题，用全固态电解质代替液态电解质制备的固态锂电池不含有机溶剂，并且其能量密度和循环寿命等具有较大的提升空间，受到研究者们的广泛关注。作为一种固体聚合物聚电解质，聚碳酸酯类固体聚合物电解质主链结构中含有强极性碳酸酯基团且室温呈无定形态，其介电常数高、尺寸稳定性好，有利于提高固体聚合物电解质的离子电导率和电化学窗口，被认为是很有应用前景的固体聚合物电解质。本文介绍了聚碳酸酯基固体聚合物电解质的导电机理，总结和评述了近年来国内外聚碳酸酯基聚合物电解质的改性研究进展，并展望了该研究领域的发展方向。

Due to the advantages of high energy density, wide operating voltage, long cycle life and eco-friendly, lithium-ion batteries have been widely used in mobile electronic devices and electric vehicles. In order to overcome the safety problems of liquid lithium ion batteries, the all solid-state lithium-ion battery prepared by replacing liquid electrolyte with solid-state electrolyte, contains no organic solvent, and possibly achieves higher energy density and recyclability, which has attracted wide attention of researchers. As one of polymer solid polyelectrolyte, polycarbonate electrolyte has amorphous structure with groups of high dielectric constant existence in the stem chain, which helps to improve the ionic conductivity and electrochemical window of solid polymer electrolyte. In this review, the ion conductive mechanism of polycarbonate-based solid polymer electrolyte was elucidated. The recent progresses on modifying the polycarbonate-based electrolyte were summarized and reviewed, and the related development was prospected.

丁青（1998-），女，陕西商洛人，硕士研究生，研究方向为锂离子电池材料，E-mail：Dingqing@emails.bjut.edu.cn，

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