The temperature dependence of the time-evolution of the Li 2 EDC is shown in Figure (b). Faster kinetics are seen for higher temperatures, which is consistent with the Arrhenius definition of the elementary rates. In Figure (b) we can again distinguish between two different time windows where the growth rate shows two different variations as a function of temperature. These two variations are in qualitative agreement with the previous finding of the transition from a reaction-limited growth kinetics to a diffusion limited regime. In and references therein). In the indicated references an activation energy within the range of 30-50 kJ/mol was identified based on the slope of the logarithmic rate of capacity loss versus the inverse temperature. Although making quantitative comparisons with these results goes beyond our scope due to the short simulation-time and the possibly related transient effects, it is in principle possible to explore the µs range within our framework and this could be therefore done in future work, thus providing a mechanistic framework for investigating thermally activated SEI growth processes. Overall, the results of our simulations suggest the onset of a Li + flux to the electrode as well as the formation of (LiEC 2 ) -and (LiEC 3 ) 2- complexes as rate limiting factors within the ns time-scale.