Abstract
Safe batteries are the basis for next-generation application scenarios such as portable energy storage devices and electric vehicles, which are crucial to achieving carbon neutralization. Electrolytes, separators, and electrodes as main components of lithium batteries strongly affect the occurrence of safety accidents. Responsive materials, which can respond to external stimuli or environmental change, have triggered extensive attentions recently, holding great promise in facilitating safe and smart batteries. This review thoroughly discusses recent advances regarding the construction of high-safety lithium batteries based on internal thermal-responsive strategies, together with the corresponding changes in electrochemical performance under external stimulus. Furthermore, the existing challenges and outlook for the design of safe batteries are presented, creating valuable insights and proposing directions for the practical implementation of safe lithium batteries.
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