Our results appear to be in direct contrast to the ones from Kasse et al. , where a columnar morphology is obtained with electrolyte replacement after galvanostatic cycling to 0 V. We rationalize this difference by the fact that an LP30 (1 M LiPF6 in EC/DMC) electrolyte was employed in their case. It is known that the in-situ hydrolysis of LiPF6 and associated HF formation already results in smooth/columnar morphologies at trace amounts of the H2O additive as low as 25-50 ppm (resulting in double the amount of HF) . In our experiments on the other hand, we add approximately an order of magnitude more water (~450 ppm at 25 mM H2O). We therefore believe that our electrolyte system provides much finer control over the process, which is in line with the observation of the reduced current density in Figure , as compared to HF containing electrolytes. Along this line, it is worth pointing out that the 'wet-formation' morphology shown in Figure is very similar to the one obtained with the as-received LP30 electrolyte, without any additive, in reference .