Fluorocarbon interlayer enhancing fast ion transport for low-temperature lithium metal batteries.

Lithium metal batteries optimized for low-temperature conditions are essential for use in cold climate applications. Nevertheless, they are hindered by the markedly reduced kinetics of lithium-ion transport in the vicinity of the lithium metal anode under low-temperature conditions. In contrast to the commonly used electrolyte engineering approaches, this study introduces a design strategy of using a functional fluorocarbon interlayer to reconstruct the surface of the lithium foil (Li@GF), aiming to effectively enhance the electrochemical reaction kinetics of the lithium metal anode at low temperatures.