An Energetic Medium for Electrochemical Storage Utilizing the High Aqueous Solubility of Potassium Polysulfide

doi:10.1149/1.2100838

Paper

An Energetic Medium for Electrochemical Storage Utilizing the High Aqueous Solubility of Potassium Polysulfide

Published Sep 1, 1987 · S. Licht

Journal of The Electrochemical Society

Q1 SJR score

30

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0

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Abstract

The aqueous solubility of potassium polysulfide is measured to be 8.5m (64% K/sub 2/S/sub 4/, 36% H/sub 2/O by weight) at 25/sup 0/C, and 11.4m (70% by weight) at 50/sup 0/C. This novel, energetic medium, containing more total sulfur than water, are investigated as high energy density half-cells for secondary electrochemical storage systems, according to K/sub 2/S/sub 4/ + 6e/sup -/ + 6K/sup +/ in equilibrium 4K/sub 2/S. The storage half-cell, contained by a sulfonated styrene and Teflon membrane, is demonstrated to be capable of being cycled at room temperature, with a storage capacity of up to 1.8 x 10/sup 6/ C/kg, operating at currents of over 1A through a 10 cm/sup 2/ thin film CoS electrode with overpotential losses of less than 2 mV/cm/sup 2//mA.

Study Snapshot

Potassium polysulfide-based electrochemical storage half-cells show potential for high energy density and cycleability at room temperature, with potential for secondary electrochemical storage systems.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Paper

An Energetic Medium for Electrochemical Storage Utilizing the High Aqueous Solubility of Potassium Polysulfide

References

Citations

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