ABSTRACT The development of biocompatible polymer‐based solid‐state electrolytes represents a promising direction for advanced energy storage applications. This work provides the first atomistic comparison of Li‐ion transport in Succinonitrile (SN)‐based eutectogels containing Lithium Difluoro(oxalate)borate (LiDFOB) and Lithium bis(trifluromethanesulfonyl)imide (LiTFSI) dual‐salts across three distinct derivatives: Cyanoethyl (CEC), Ethyl (EC), and Methyl (MC) cellulose. The structural analysis reveals that the CEC system demonstrates enhanced molecular ordering through increased hydrogen bonding interactions, which suggests the higher mechanical stability of the electrolyte. The MC systems exhibit stronger lithium‐ion interactions with both the polymer matrix and electrolyte environment, which is due to the less stearic hindrance. The diffusion analysis indicates that lithium ions associated with LiTFSI in the EC system show diffusive behavior with a self‐diffusion coefficient of 1.44 × 10 −12 m 2 .s −1 . These molecular‐level insights into structural organization and ion transport mechanisms provide valuable design criteria for developing high‐performance, biocompatible solid‐state electrolytes for next‐generation lithium‐ion batteries.
Das et al. (2026) studied this question.