Fig. 3: Microstructures of the Zn electrodeposition on Zn and Sb@Cu substrates with different capacities.

Zn electrodeposited on Zn substrate with areal capacities of a 1 mAh cm⁻², b 10 mAh cm⁻², and c 50 mAh cm⁻². Zn electrodeposited on Sb@Cu substrate with areal capacities of d 1 mAh cm⁻², e 10 mAh cm⁻², and f 50 mAh cm⁻². g Cross-sectional SEM image and the corresponding EDS-mapping of Zn electrodeposition on Sb@Cu with a capacity of 10 mAh cm⁻².