Abstract Organic materials have attracted considerable attention as high‐performance cathodes for aqueous zinc‐ion batteries (AZIBs) owing to their structural tunability and molecular diversity. However, their capacities are typically limited (≤350 mAh g −1 ), primarily due to redox reactions involving the transfer of only a few electrons (≤4 electrons) per molecule. Here, the study designs and synthesizes a six‐electron‐transfer organic cathode material, 5,12‐dihydro‐1,5,7,8,12,14‐hexaazapentacene (DHHAP), by bridging water‐soluble pyridinediamine and hydroxybenzoquinone units. First‐principles calculations and in situ ATR‐FTIR spectroscopy confirm that four imine (C═N) groups and two amine (─NH─) groups serve as redox‐active sites, affording a high theoretical capacity of 562 mAh g −1 . Electrochemical tests reveal that DHHAP delivers a remarkable discharge capacity of 507 mAh g −1 at 50 mA g −1 —approaching the theoretical limit—and exhibits excellent cycling stability over 10 000 cycles at 10 A g −1 . Moreover, it maintains outstanding rate capability and long‐term cycling performance even at high mass loadings (3–10 mg cm −2 ), underscoring its promise for practical applications in aqueous zinc‐ion batteries.
Zhang et al. (2025) studied this question.