Exploring zinc coordination in novel zinc battery electrolytes.

Physical chemistry chemical physics : PCCP

PubMedID: 24760367

Kar M, Winther-Jensen B, Forsyth M, Macfarlane DR. Exploring zinc coordination in novel zinc battery electrolytes. Phys Chem Chem Phys. 2014;.
The coordination of zinc ions by tetraglyme has been investigated here to support the development of novel electrolytes for rechargeable zinc batteries. Zn(2+) reduction is electrochemically reversible from tetraglyme. The spectroscopic data, molar conductivity and thermal behavior as a function of zinc composition, between mole ratios [80?:?20] and [50?:?50] [tetraglyme?:?zinc chloride], all suggest that strong interactions take place between chloro-zinc complexes and tetraglyme. Varying the concentration of zinc chloride produces a range of zinc-chloro species (ZnClx)(2-x) in solution, which hinder full interaction between the zinc ion and tetraglyme. Both the [70?:?30] and [50?:?50] mixtures are promising electrolyte candidates for reversible zinc batteries, such as the zinc-air device.