Remarkably, the extent of this impurity phase varies depending on the electrode material from which the electrolyte was separated from (see Table ). For instance, only a small amount of LiCl is detected after separation from LTO, LCO, and LMO. A higher fraction of LiCl is observed with Ni-rich electrode materials (e.g., NMC and NCA). Notably, no additional LiCl formation was detected with C-coated LFP. The presence of LiCl impurity within the recycled Li3InCl6 In addition to the LiCl impurity phase, an unknown phase was observed in recycled Li3InCl6, characterized by reflections at 2θ = 14.27°, 15.47°, 17.53°, 19.37°, 20.76°, and 26.14°. This phase was particularly prominent in the recycled Li3InCl6 after separation from NCA. Although its exact composition remains unknown, this impurity phase has been observed across multiple measurements.