Blatter Radicals as Bipolar Materials for Symmetrical Redox-Flow Batteries

 https://pubs.acs.org/doi/full/10.1021/jacs.1c13543

"all-organic, symmetrical battery chemistries... 1,2,4-benzotriazin-4-yl radicals combine bipolar electrochemistry with high chemical stability in all states of charge... energy-storage materials for symmetric redox-flow batteries... derivatives with a C(3)–CF3 substituent (compounds 3)... minimal capacity fade during battery cycling... stability of charged states (3a+ and 3a–) was confirmed through independent chemical synthesis"

Related: No lithium. No cobalt. No vanadium. The organic battery revolution begins
https://the-european.eu/story-46446/no-lithium-no-cobalt-no-vanadium-the-organic-battery-revolution-begins.html