Abstract

Li(metal)–sulfur (Li–S) systems are among the rechargeable batteries of the highest possible energy density due to the high capacity of both electrodes. The surface chemistry developed on Li electrodes in electrolyte solutions for Li–S batteries was rigorously studied using Fourier transform infrared and X-ray photoelectron spectroscopies. A special methodology was developed for handling the highly reactive Li samples. It was possible to analyze the contribution of solvents such as 1-3 dioxolane, the electrolyte , polysulfide , and additives to protective surface films that are formed on the Li electrodes. The role of as a critical component whose presence in solutions prevents a shuttle mechanism that limits the capacity of the sulfur electrodes is discussed and explained herein.

Keywords

PolysulfideElectrolyteSulfurElectrodeX-ray photoelectron spectroscopyChemistryFourier transform infrared spectroscopyElectrochemistryMetalInorganic chemistryBattery (electricity)Chemical engineeringMaterials sciencePhysical chemistryOrganic chemistry

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Publication Info

Year
2009
Type
article
Volume
156
Issue
8
Pages
A694-A694
Citations
1401
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Doron Aurbach, Elad Pollak, Ran Elazari et al. (2009). On the Surface Chemical Aspects of Very High Energy Density, Rechargeable Li–Sulfur Batteries. Journal of The Electrochemical Society , 156 (8) , A694-A694. https://doi.org/10.1149/1.3148721

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DOI
10.1149/1.3148721