In an effort to develop free-standing lithium battery membrane, ternary phase diagrams of polyethylene glycol diacrylate (PEGDA), succinonitrile (SCN) and lithium bis(trifluoromethane) sulfonimide (LiTFSI) mixtures have been established by means of differential scanning calorimetry and polarized optical microscopy. Various coexistence regions of the PEO/SCN/LiTFSI mixtures have been mapped out that include isotropic non-crystalline region, crystal + liquid as well as liquid + plastic crystal regions. Ternary information provided the boundaries where isotropic compositions take place at room temperature. This information allowed the fabrication of flexible, transparent films with different compositions by means of UV curing preserving the amorphous structure. Membrane's ionic conductivity was measured by impedance analysis obtaining conductivity values of the order of 10-3 S/cm at room temperature.

Solvent free self-standing polymeric electrolytes

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.