In total, the N1s spectra in Figure revealed a complex reaction scheme for the Li-induced decomposition of bulk BMP-TFSI. In the presence of sufficient Li, both BMP and TFSI can largely react into solid, mostly molecular reaction products already at RT. This process continues upon thermal activation. Significant formation of volatile N-containing reaction products is observed only upon annealing to 650 K and more. The trends for Li-induced decomposition largely follow the trends obtained and discussed before for the reaction between an adsorbed BMP-TFSI monolayer and Li (Figure ). There are, however, also some differences in the reaction behavior, both in the RT reaction behavior and upon annealing.