Achieving high-rate and high-capacity Zn metal anodes via a three-in-one carbon protective layer

A three-in-one carbon protective layer is introduced on a Zn anode (3D-NC@Zn) for high-quality Zn deposition. The 3D-NC@Zn electrode exhibits long-term stability over 1300 h at both high rate (10 mA cm −2 , 1 mA h cm −2 ) and high capacity (1 mA cm −2 , 10 mA h cm −2 ).