Stable Zn Metal Anodes with Limited Zn-Doping in MgF₂ Interphase for Fast and Uniformly Ionic Flux.

ABSTRACT: The practical applications of aqueous Zn metal batteries are currently restricted by the inherent drawbacks of Zn such as the hydrogen evolution reaction, sluggish kinetics, and dendrite formation. To address these problems, herein, a limitedly Zn-doped MgF₂ interphase comprising an upper region of pure, porous MgF₂ and a lower region of gradient Zn-doped MgF₂ is achieved via radio frequency sputtering technique. The porous MgF₂ region is a polar insulator whose high corrosion resistance facilitates the de-solvation of the solvated Zn ions and suppression of hydrogen evolution, resulting in Zn metal electrodes with a low interfacial resistance. The Zn-doped MgF₂ region facilitates fast transfer kinetics and homogeneous deposition of Zn

SUBMITTER: Kim JY 

PROVIDER: S-EPMC8783935 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature