Additionally, it is worth noting that the recovery of LFP is highly sensitive to variations in processing steps, with significant differences observed depending on the synthesis method employed (solid-state synthesis vs. sol-gel process). Specifically, when LFP is synthesized via the sol-gel method, a carbon coating is applied, as confirmed by TEM analysis (Figure ). This carbon layer plays a pivotal role in modulating the recycling outcome, as indicated by diffraction analysis, where larger amounts of additional LiCl phase are observed alongside Li3InCl6 for non-coated LFP. In addition, non-coated LFP undergoes partial decomposition during the dissolution-based separation process, as shown in the Supporting Information (see Figure ) based on two separate experimental batches. This results in the formation of additional phases, including FePO4, Fe3O4, FeO, and other unidentified phases. Moreover, in addition to the desired Li3InCl6 phase, a detectable amount (ranging from 3.63 to 7.66 wt-%) of LiCl is observed. A comparative analysis of the diffraction patterns (Figure vs. Figure ) suggests that the carbon coating may mitigate the interaction between Li3InCl6 and the electrode material. In strong contrast to this, complete recrystallization of Li3InCl6 is observed following the separation of Li3InCl6 from C-LFP. However, XPS measurements (Figure ) still reveal the presence of indium species on the particle surfaces, indicating that some degree of interaction persists despite the carbon coating. These findings underscore the potential of surface modification, induced by specific coatings, to influence the interactions between electrode materials and solid electrolytes. The implementation of such surface modifications may represent a promising strategy to enhance the recycling efficiency of both the electrolyte and electrode materials. Furthermore, it is essential to note that storing of the synthesized electrode materials in an Arfilled glovebox is relevant for the quality of the recrystallized Li3InCl6 (see section 3.4). When electrode materials were exposed to ambient air for a certain period prior to recycling, a higher amount of LiCl within the recrystallized Li3InCl6 structure is detectable. For instance, Li3InCl6 in combination with LTO, stored in ambient air after synthesis (approximately 1-2 weeks), shows a significantly larger LiCl phase fraction within the recycled sample compared to storage under Ar-atmosphere after synthesis. As illustrated in Figure the LiCl formation results in a higher phase fraction of LiCl (14.74 wt-%), compared to the LTO sample stored in the Ar-filled glovebox (0.92 wt-%). This increase is likely associated with CO2 absorption processes from the air, leading to the formation of Li2CO3 and further promoting the Lewis acid-base mechanism, described in section 3.4.