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Issue 22, 2014
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Exploring zinc coordination in novel zinc battery electrolytes

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Abstract

The coordination of zinc ions by tetraglyme has been investigated here to support the development of novel electrolytes for rechargeable zinc batteries. Zn2+ 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.

Graphical abstract: Exploring zinc coordination in novel zinc battery electrolytes

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Article information


Submitted
20 Feb 2014
Accepted
11 Apr 2014
First published
24 Apr 2014

Phys. Chem. Chem. Phys., 2014,16, 10816-10822
Article type
Paper

Exploring zinc coordination in novel zinc battery electrolytes

M. Kar, B. Winther-Jensen, M. Forsyth and D. R. MacFarlane, Phys. Chem. Chem. Phys., 2014, 16, 10816
DOI: 10.1039/C4CP00749B

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