fig9

Figure 9. (A) Hydration mechanisms of DAP in aqueous electrolytes. Reproduced with permission^[77]. Copyright 2020, Elsevier; (B) Schematic diagram of Zn/DAP battery. Reproduced with permission^[78]. Copyright 2022, Elsevier; (C) Calculated structural evolution and protonation pathway at discharging process of HATN. Reproduced with permission^[32]. Copyright 2020, Wiley Online Library; (D) Calculated molecular electrostatic potential distribution of HATN-3CN molecule. Reproduced with permission^[44]. Copyright 2021, Elsevier; (E) Zinc storage mechanism of PoPD. Reproduced with permission^[81]. Copyright 2020, Elsevier; (F) (Dis-)charge profiles of PA-COF cathode under 1.0 A·g^-1. Reproduced with permission^[87]. Copyright 2020, American Chemical Society. DAP: 2,3-diaminophenazine; HATN: diquinoxalino[2,3-a:2’,3’-c]phenazine; HATN-3CN: diquinoxalino[2,3-a:2′,3′-c]phenazine-2,8,14-tricarbonitrile; PoPD: poly(o-phenylenediamine); PA-COF: phenanthroline covalent-organic frameworks.