Dendrite-free lithium metal anodes: stable solid electrolyte interphases for high-efficiency batteries

Li metal anodes are the 'Holy Grail' of energy storage systems and they have shown significant advances recently. A more superior cycling stability and a higher utilization ratio of the Li metal anode have been achieved by additive- and nanostructure-stabilized SEI layers. A profound understanding of the composition, internal structure, and evolution of the SEI film sheds new light on dendrite-free high-efficiency lithium metal batteries.