Next, we would like to comment on the apparent difference between the present model study, where Li was deposited as metallic Li 0 species, and the situation in an electrochemical cell, where Li is deposited as Li + ion. For reaction between the BMP-TSFI monolayer and coadsorbed Li it is likely that there is no difference, since in this case the reaction may start from coadsorbed species, where it does not matter whether Li arrived initially as neutral Li 0 or as ionic Li + species. This is different for reaction with the thick BMP-TFSI film, where reaction with Li 0 can result in an initial electron transfer into the LUMO of TFSI, which is not possible for reaction with Li + . In that case, Li 0 provides the electron for reduction of BMP-TFSI which otherwise would come from the electrode. The present experimental and theoretical results