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Published 2015 | Published
Book Section - Chapter Open

Lithium Dendrite Inhibition on Post-Charge Anode Surface: The Kinetics Role


We report experiments and molecular dynamics calculations on the kinetics of electrodeposited lithium dendrites relaxation as a function of temperature and time. We found that the experimental average length of dendrite population decays via stretched exponential functions of time toward limiting values that depend inversely on temperature. The experimental activation energy derived from initial rates as E_a~ 6-7 kcal/mole, which is closely matched by MD calculations, based on the ReaxFF force field for metallic lithium. Simulations reveal that relaxation proceeds in several steps via increasingly larger activation barriers. Incomplete relaxation at lower temperatures is therefore interpreted a manifestation of cooperative atomic motions into discrete topologies that frustrate monotonic progress by 'caging'.

Additional Information

© 2015 Materials Research Society. Authors gratefully acknowledge support from Bill and Melinda Gates Foundation Grant No. OPP1069500 on environmental sustainability and, in part, by Bosch Energy Research Network Grant No. 13.01.CC11.

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