N,N-dimethylformamide tailors solvent effect to boost Zn anode reversibility in aqueous electrolyte.

ABSTRACT: Rechargeable aqueous Zn batteries are considered as promising energy-storage devices because of their high capacity, environmental friendliness and low cost. However, the hydrogen evolution reaction and growth of dendritic Zn in common aqueous electrolytes severely restrict the application of Zn batteries. Here, we develop a simple strategy to suppress side reactions and boost the reversibility of the Zn electrode. By introducing 30% (volume fractions) N,N-dimethylformamide (DMF) to the 2 M Zn(CF₃SO₃)₂-H₂O electrolyte (ZHD30), the preferential hydrogen-bonding effect between DMF and H₂O effectively reduces the water activity and hinders deprotonation of the electrolyte. The ZHD30 electrolyte improves the Zn plating/stripp

SUBMITTER: Ma Y 

PROVIDER: S-EPMC9671663 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature