1 results about "Electrolyte cation" patented technology

The invention provides a preparation method of a wide-temperature-range deep eutectic electrolyte containing episulfonium cations, and belongs to the technical field of electrolyte material preparation. The invention aims to solve the problems that the existing deep eutectic electrolyte is insufficient in cation stability, poor in low-temperature performance and tedious in synthesis process. The method comprises the following steps: S1, preparing faint yellow viscous episulfonium halide; s2, adding the episulfonium halide and the lithium salt of the target weak coordination anion into an ionic liquid solvent to generate high-purity episulfonium salt; s3, preparing a composite HBD; s4, adding the composite HBD, high-purity episulfonium salt and alkali metal salt into a dry three-neck flask, and stirring to obtain a mixed system; and S5, after stirring is completed, carrying out vacuum drying on the mixed system to obtain the uniform and transparent functionalized deep eutectic electrolyte.