Regulating interfacial reaction through electrolyte chemistry enables gradient interphase for low-temperature zinc metal batteries.

ABSTRACT: In situ formation of a stable interphase layer on zinc surface is an effective solution to suppress dendrite growth. However, the fast transport of bivalent Zn-ions within the solid interlayer remains very challenging. Herein, we engineer the SEI components and enable superior kinetics of Zn metal batteries under harsh conditions through regulating the sequence of interfacial chemical reaction. With the differences in chemical reactivity of trimethyl phosphate co-solvent and trifluoromethanesulfonate anions in the Zn²⁺-solvation shell, Zn₃(PO₄)₂ and ZnF₂ are successively generated on Zn metal surface to form a gradient ZnF₂-Zn₃(PO₄)₂ interphase. Mechanistic studies reveal the outer ZnF_2<

SUBMITTER: Wang W 

PROVIDER: S-EPMC10482877 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature