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

Abstract Structure deterioration and side reaction, which originated from the solvated H 2 O, 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 H 2 O and strengthen the coordination competitiveness of SO 4 2− to Zn 2+ over H 2 O. Experiment results and theoretical simulations demonstrate that the water-poor solvation structure of Zn 2+ is achieved, which can (i) substantially eliminate solvated-H 2 O-mediated undesirable side reactions on the Zn anode. (ii) boost the desolvation kinetics of Zn 2+ and suppress Zn dendrite growth as well as structure aberration of the…

• S
  Strong
• DO
  Department of Education of Guangdong Province

  Award: 2020ZDZX2004
• BA
  Basic and Applied Basic Research Foundation of Guangdong Province

  Award: 2022A1515140008