An aqueous electrolyte densified by perovskite SrTiO₃ enabling high-voltage zinc-ion batteries.

ABSTRACT: The conventional weak acidic electrolyte for aqueous zinc-ion batteries breeds many challenges, such as undesirable side reactions, and inhomogeneous zinc dendrite growth, leading to low Coulombic efficiency, low specific capacity, and poor cycle stability. Here, an aqueous densified electrolyte, namely, a conventional aqueous electrolyte with addition of perovskite SrTiO₃ powder, is developed to achieve high-performance aqueous zinc-ion batteries. The densified electrolyte demonstrates unique properties of reducing water molecule activity, improving Zn²⁺ transference number, and inducing homogeneous and preferential deposition of Zn (002). As a result, the densified electrolyte exhibits an ultra-long cycle stability over 1000 cycles in Zn/Ti half cells. In addition,

SUBMITTER: Deng R 

PROVIDER: S-EPMC10435537 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature