Advanced Materials (FRG) 2015-09-16

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

Frank Y Fan, W Craig Carter, Yet-Ming Chiang

Index: Adv. Mater. 27 , 5203-9, (2015)

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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. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.