Gao Jingyi, Wang Cong, Han Dong-Wook, Shin Dong-Myeong
Department of Mechanical Engineering, The University of Hong Kong Pokfulam 999077 Hong Kong China
Department of Cogno-Mechatronics Engineering, Pusan National University Busan 46241 Republic of Korea.
Chem Sci. 2021 Aug 31;12(40):13248-13272. doi: 10.1039/d1sc04023e. eCollection 2021 Oct 20.
As lithium-ion batteries have been the state-of-the-art electrochemical energy storage technology, the overwhelming demand for energy storage on a larger scale has triggered the development of next-generation battery technologies possessing high energy density, longer cycle lives, and enhanced safety. However, commercial liquid electrolytes have been plagued by safety issues due to their flammability and instability in contact with electrodes. Efforts have focused on developing such electrolytes by covalently immobilizing anionic groups onto a polymer backbone, which only allows Li cations to be mobile through the polymer matrix. Such ion-selective polymers provide many advantages over binary ionic conductors in battery operation, such as minimization of cell polarization and dendrite growth. In this review, the design, synthesis, fabrication, and class are reviewed to give insight into the physicochemical properties of single-ion conducting polymer electrolytes. The standard characterization method and remarkable electrochemical properties are further highlighted, and perspectives on current challenges and future directions are also discussed.
由于锂离子电池一直是最先进的电化学储能技术，对大规模储能的巨大需求引发了具有高能量密度、更长循环寿命和更高安全性的下一代电池技术的发展。然而，商用液体电解质因其易燃性以及与电极接触时的不稳定性而受到安全问题的困扰。人们致力于通过将阴离子基团共价固定在聚合物主链上来开发此类电解质，这仅允许锂离子通过聚合物基体移动。这种离子选择性聚合物在电池运行中比二元离子导体具有许多优势，例如可将电池极化和枝晶生长降至最低。在这篇综述中，对单离子导电聚合物电解质的设计、合成、制备和类别进行了综述，以深入了解其物理化学性质。进一步强调了标准表征方法和显著的电化学性质，并讨论了当前面临的挑战和未来的发展方向。
