Application of quinonic cathode compounds for quasi-solid lithium batteries

► Three high energy-density quinonic cathode compounds were incorporated in solid-state organic cathode batteries. ► The cycleabilities of organic cathode cells were improved by nearly two orders of magnitude compared to conventional cells. ► The general applicability of organic cathode solid-state cells was demonstrated. ► Compounds that have been regarded “unusable” became “usable” under novel cell design and construction.