Metallic Bi nanosheets artificial interphase toward ultra-stable and dendrite-free aqueous zinc batteries

The aqueous zinc-ion battery (AZIB) is favored for its high theoretical capacity, low redox potential, abundant resource availability, and environmental sustainability. However, the performance of the metal zinc anode electrode is compromised by the formation of zinc dendrites on its surface and side reactions such as corrosion, passivation, and hydrogen evolution reaction that impede the practical application of AZIBs. The Zn@Bi anode electrode leverages the synergistic effects of Zn and Bi elements to effectively modulate nucleation and growth kinetics during zinc deposition/dissolution while successfully inhibiting hydrogen evolution reactions. The service life of symmetric batteries utilizing Zn@Bi as anodes exceeds 1000 hat a current density of 0.5 mA cm- 2 . Furthermore, V2O5//Zn@Bi full battery maintains a coulombic efficiency of 99.97 % after 1000 cycles at a current density of 1 A/g. These findings underscore the significant potential that modified zinc anodes hold for enhancing the performance characteristics of zinc-ion batteries.