Energy Storage Science and Technology ›› 2024, Vol. 13 ›› Issue (7): 2327-2347.doi: 10.19799/j.cnki.2095-4239.2024.0323

• Special Issue on Low Temperature Batteries • Previous Articles     Next Articles

Solid-state electrolyte for low-temperature lithium metal batteries

Xiang LI(), Dezhong LIU(), Kai YUAN, Dapeng CHEN()   

  1. Wuhan Institute of Marine Electric Propulsion, Wuhan 430064, Hubei, China
  • Received:2024-04-11 Revised:2024-05-02 Online:2024-07-28 Published:2024-07-23
  • Contact: Dezhong LIU, Dapeng CHEN E-mail:742010446@qq.com;ldzone@outlook.com;dpchenhust@gmail.com

Abstract:

Solid-state lithium metal batteries (SSLMBs) have emerged as a pivotal direction for developing next-generation secondary batteries, attributed to their high theoretical energy density and safety features. However, the decline in ionic conductivity of the solid electrolyte at low temperatures, coupled with increased impedance at the electrolyte/electrode interface (≤0 ℃), severely impairs the electrochemical performance of these batteries. This limitation hinders their application in military and civilian sectors. Addressing the low-temperature electrochemical performance is thus a critical technological challenge. This study concentrates on the advanced and emerging technologies in solid-state electrolytes, reviewing progress in the domain of low-temperature SSLMBs from a materials perspective. Initially, the low-temperature chemical characteristics and failure mechanisms of SSLMBs are analyzed, encompassing bulk ion transport, interface charge transfer, electrode surface structure, and lithium metal stability. Subsequently, we summarize the design technologies for advanced lithium-ion batteries operational at low temperatures according to different types of solid electrolytes. The design principles, the relationship between chemical composition and performance, and the interface optimization strategies for inorganic, polymer, and composite solid-state electrolytes are elaborated in detail. Lastly, we prospect future practical research directions for SSLMBs at low temperatures across four dimensions: new materials, new characterization techniques, new mechanisms, and new standards. This review aims to provide a comprehensive reference for the rational design of SSLMBs under low-temperature conditions.

Key words: solid state electrolytes, lithium metal batteries, low temperature, ionic conductivity

CLC Number: