Sulfolane-containing aqueous electrolyte solutions for producing efficient ampere-hour-level zinc metal battery pouch cells

HIGHLIGHTS

SUMMARY

The authors develop practical ampere-hour-scale aqueous Zn metal battery pouch cells by engineering the electrolyte solution. After identifying the proton reduction as the primary source of H2 evolution during Zn metal electrodeposition, the authors design an electrolyte solution containing reverse micelle structures where sulfolane molecules constrain water in nanodomains to hinder proton reduction. The 1H NMR spectra shift for the H2O electrolyte and 3 m Zn(OTF)2/H2O-sulfolane (16:x, x=1, 2, 3, 4) electrolytes. f Normalized FTIR spectra of the H2O electrolyte and 3 m Zn(OTf)2 . . .

 



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