Ultrahigh Li ion diffusivity in anodic SEI suppresses dendrite growth in lithium metal batteries

New chemistry and new materials for high-energy-density batteries are in great demands as advanced portable electronics and long-range electric vehicles require ever increasing energy and power;current lithium （Li）-ion batteries based on graphite anode (a theoretical specific capacity of 372 mA h g -1 ) reach the limited theoretical energy density of 350 W h kg -1 [1].