A weakly solvating electrolyte towards practical rechargeable aqueous zinc-ion batteries.

ABSTRACT: Structure deterioration and side reaction, which originated from the solvated H₂O, are the main constraints for the practical deployment of both cathode and anode in aqueous Zn-ion batteries. Here we formulate a weakly solvating electrolyte to reduce the solvating power of H₂O and strengthen the coordination competitiveness of SO₄^2- to Zn²⁺ over H₂O. Experiment results and theoretical simulations demonstrate that the water-poor solvation structure of Zn²⁺ is achieved, which can (i) substantially eliminate solvated-H₂O-mediated undesirable side reactions on the Zn anode. (ii) boost the desolvation kinetics of Zn²⁺ and suppress Zn dendrite growth as well as structure aberration of the cathode.

SUBMITTER: Shi X 

PROVIDER: S-EPMC10770389 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature