Frontispiece: Regulating Interfacial Lithium Ion by Artificial Protective Overlayers for High‐Performance Lithium Metal Anodes

Fabricating artificial protective overlayer with tunable surficial properties on lithium metal is a precise and effective strategy to restrain the notorious dendrite growth. This Concept article introduces the recent studies on inorganic, polymeric, and carbonaceous protective overlayers for improving lithium ion uniformity and transportation at the anode surface. The remaining challenges and promising directions of artificial protective overlayers are then highlighted to provide clues for the practical application of Li metal anodes.