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Published October 7, 2015 | Published
Journal Article Open

Annealing kinetics of electrodeposited lithium dendrites


The densifying kinetics of lithium dendrites is characterized with effective activation energy of E_a ≈ 6 − 7 kcal mol^(−1) in our experiments and molecular dynamics computations. We show that heating lithium dendrites for 55 °C reduces the representative dendrites length λ(T,t) up to 36%. NVT reactive force field simulations on three-dimensional glass phase dendrites produced by our coarse grained Monte Carlo method reveal that for any given initial dendrite morphology, there is a unique stable atomic arrangement for a certain range of temperature, combined with rapid morphological transition (∼10 ps) within quasi-stable states involving concurrent bulk and surface diffusions. Our results are useful for predicting the inherent structural characteristics of lithium dendrites such as dominant coordination number.

Additional Information

© 2015 AIP Publishing LLC. Received 24 June 2015; accepted 7 August 2015; published online 1 October 2015. The authors would like to gratefully thank the financial 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. The help from undergraduate student Mark Lorden and discussions with graduate student Daniel Brooks are also acknowledged.

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