用于锂金属电池的 PVDF 基复合聚合物电解质的最新进展和未来展望：综述,Energy & Fuels

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用于锂金属电池的 PVDF 基复合聚合物电解质的最新进展和未来展望：综述
Energy & Fuels ( IF 5.2 ) Pub Date : 2023-05-08 , DOI: 10.1021/acs.energyfuels.3c00678
Yuhan Zhang ₁ , Chengyu Zhu ₁ , Shaodong Bai ₁ , Jianjiang Mao ₁ , Fei Cheng ₁

Affiliation

使用固态电解质（SSEs）的锂金属电池（LMBs）可以实现能量密度和安全性能的双重提升，受到了广泛关注。尽管聚偏二氟乙烯 (PVDF) 基电解质具有出色的柔韧性和可加工性，但被认为是 LMB 中 SSE 的重要成员，其离子电导率低且内阻高。基于 PVDF 的复合聚合物电解质 (CPE) 的结构使它们能够结合无机成分和 PVDF 基板的优点。改性和先进技术的使用可以使PVDF基CPE获得更高的机械强度和改善的电化学性能，但其实际应用仍有待探索。本文综述了 LMBs 中基于 PVDF 的 CPE 的最新研究进展，着重介绍了提高PVDF基CPEs电化学性能和安全性能的方法，具体以离子电导率、离子迁移性能、机械性能、热稳定性和电化学稳定窗口五个方面的性能升级为主线进行了探讨. 最后，介绍了高性能PVDF基CPE在未来发展中面临的挑战和应用前景。

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Recent Advances and Future Perspectives of PVDF-Based Composite Polymer Electrolytes for Lithium Metal Batteries: A Review

Lithium metal batteries (LMBs) using solid-state electrolytes (SSEs) can achieve dual enhancement of energy density and safety performance and have attracted considerable attention. In spite of their excellent flexibility and processability, poly(vinylidene fluoride) (PVDF)-based electrolytes, regarded as a prominent member of SSEs in LMBs, suffer from low ionic conductivity and high internal resistance. The structure of PVDF-based composite polymer electrolytes (CPEs) allows them to combine the advantages of inorganic components and PVDF substrates. The use of modification and advanced technology can achieve higher mechanical strength and improved electrochemical properties of PVDF-based CPEs, but their practical application still needs to be explored. This paper reviews recent research progress of PVDF-based CPEs in LMBs, focuses on the methods to improve the electrochemical and safety performance of PVDF-based CPEs, and specifically discusses five aspects of properties upgrading as the main line, namely, the ionic conductivity, ion migration properties, mechanical properties, thermal stability, and electrochemical stability windows. Finally, the challenges and application prospects of high-performance PVDF-based CPEs in future development are presented.

更新日期：2023-05-08

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