The work is dedicated to the development of a prototype of a solid-state lithium battery based on the nanocomposite polymer gel-electrolyte with the introduction of up to 50 wt.% of the ionic liquid (1-ethyl3- methylimidazolium tetrafluoroborate), which remains liquid up to the decomposition temperature of 320°C. For this purpose, the organic cathode material– poly(phenylphenazine) was chosen, into which a tetrafluoroborate anion was intercalated during oxidation of their functional groups.
