薄膜型全固态锂电池

All-solid-state thin film lithium batteries

薄膜型全固态锂电池具有完美的电极/电解质固-固界面,可以有效解决当前商用锂离子电池的安全性问题,并具有超长的循环寿命、较宽的使用温度范围、较低的自放电率等优点,相比体型固态锂电池性能优越,受到了业界的广泛关注。然而制备成本高、单位面积能量密度低等缺点限制了其应用范围。本文介绍了薄膜型全固态锂电池的工作原理及特点、关键材料的研究现状,并针对薄膜固态锂电池的产业化现状和技术瓶颈进行了总结,对新一代薄膜型全固态锂电池的发展及产业化应用进行了展望。

All-solid-state thin film lithium batteries,having perfect electrode/electrolyte solid/solid interface,can effectively improve the safety issue of the current commercial lithium-ion batteries using liquid electrolyte.Their outstanding electrochemical properties,including ultralong cycle life,wide temperature range,and low self-discharge,are superior to those of the bulk solid-state batteries and attract a lot of interest.The high fabrication cost and low energy density per unit area are the two main drawbacks for the current thin film battery technology,which limit their broad applications.In this perspective,we summarize the working principle,key materials,and research progress for thin film lithium batteries.The current commercialization and development bottleneck of solid-state thin film lithium batteries are summarized,and perspectives on future development and application of the next-generation thin film lithium batteries are provided.