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Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
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Exploring zinc coordination in novel zinc battery electrolytes
Mega Kar1, Bjorn Winther-Jensen, Maria Forsyth
1Australian Centre for Electromaterials Science (ACES), School of Chemistry, Monash University, Clayton 3800, Victoria, Australia. mega.kar@monash.edu.
Physical Chemistry Chemical Physics : PCCP
|April 25, 2014
Summary
Tetraglyme effectively coordinates zinc ions for rechargeable batteries. Specific tetraglyme-zinc chloride mixtures show promise as electrolytes for reversible zinc batteries, like zinc-air devices.
Area of Science:
- Electrochemistry
- Materials Science
- Battery Technology
Background:
- Rechargeable zinc batteries require novel electrolytes for improved performance.
- Tetraglyme is explored as a coordinating solvent for zinc ions.
Purpose of the Study:
- To investigate the coordination of zinc ions by tetraglyme.
- To evaluate tetraglyme-zinc chloride mixtures as electrolytes for rechargeable zinc batteries.
Main Methods:
- Electrochemical analysis (Zn(2+) reduction reversibility).
- Spectroscopic studies.
- Molar conductivity measurements.
- Thermal behavior analysis.
Main Results:
- Zn(2+) reduction is electrochemically reversible in tetraglyme.
- Strong interactions observed between chloro-zinc complexes and tetraglyme.
- Varying zinc chloride concentration forms zinc-chloro species, affecting ion-solvent interaction.
- Mixtures [70:30] and [50:50] tetraglyme:zinc chloride show potential.
Conclusions:
- Tetraglyme-based electrolytes are suitable for rechargeable zinc batteries.
- The [70:30] and [50:50] tetraglyme:zinc chloride mixtures are promising electrolyte candidates.
- Further development for devices like zinc-air batteries is supported.
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