Mechanism and Kinetics of Li 2 S Precipitation in Lithium–Sulfur Batteries

The kinetics of Li2S 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. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed…

• UD
  U.S. Department of Energy
• MR
  Materials Research Science and Engineering Center, Harvard University
• BE
  Basic Energy Sciences