Tetraethylorthosilicate (TEOS, >99%, Sigma Aldrich), triethylvinylorthosilicate (VTEOS, 97%, Sigma Aldrich), and formic acid (Puram, Fluka Analytical) were used for the silica solgel reaction. The ionic liquid electrolyte was produced from lithium bis(fluoromethanesulfonyl)imide (LiFSI, Sigma Aldrich) and 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (PYR14 TFSI, 99.5%, Solvionic). Ionic liquid was first degassed using a vacuum oven before storing inside an Ar-gas-filled glovebox (l ppm H2O). 1M LiFSI PYR14 TFSI ionic liquid electrolyte (ILE) was then prepared from the degassed ionic liquid. The sol was composed of equal volumetric ratios of the silica precursors and acid catalyst. The sol was mixed with the ILE in a 60:40 volumetric ratio. Two different gels were formed for electrochemical analysis. The sol was either spun directly onto the electrodes (solution processed) or allowed to gel and dry in a polypropylene mold before being extracted for bulk testing. The films were spun twice at 1500 rpm (CEE Apogee coater) with an hour rest in between spins to achieve a uniform coating across the electrode. Gelation took approximately 2 hours for the spun films and overnight for the bulk gels. The gelation times were sufficiently long to ensure uniform sol penetration into the electrode.