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Mechanism and Kinetics of Li2S Precipitation in Lithium-Sulfur Batteries.

Advanced materials (Deerfield Beach, Fla.) (2015-08-11)
Frank Y Fan, W Craig Carter, Yet-Ming Chiang
ABSTRACT

The kinetics of Li2 S electrodeposition onto carbon in lithium-sulfur batteries are characterized. Electrodeposition is found to be dominated by a 2D nucleation and growth process with rate constants that depend strongly on the electrolyte solvent. Nucleation is found to require a greater overpotential than growth, which results in a morphology that is dependent on the discharge rate.

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