Annealing kinetics of electrodeposited lithium dendrites
Asghar Aryanfar, Tao Cheng, Agustín J. Colussi, Boris V. Merinov, William A. Goddard III, Michael R. Hoffmann
Abstract
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.
Group Members
Aryanfar, A., Cheng, T., Colussi, A. J., Merinov, B. V., III, W. A. G., & Hoffmann, M. R. (2015). Annealing kinetics of electrodeposited lithium dendrites. *J. Chem. Phys.*, *143*(13), Art. No. 134701. https://doi.org/10.1063/1.4930014