Organic redox-active materials have emerged as a class of electrode materials for rechargeable batteries due to their high redox activity, low cost, structure diversity and flexibility. However, the high solubility of organic small molecules in organic electrolytes commonly leads to the fast capacity decay with cycling. Herein, we report a redox-active conjugated microporous polymer of poly(pyrene-co-anthraquinone) (PyAq) cathode material consisting of pyrene and anthraquinone units. Benefiting from the highly cross-linked polymer structure with insoluble nature in organic electrolytes, the high surface area and the plentiful redox-active carbonyl groups, the PyAq cathode demonstrates outstanding electrochemical performances for both lithium-ion batteries (LIBs) and potassium-ion batteries (KIBs). Specifically, the PyAq cathode for LIBs delivers a high reversible capacity of 169 mAh g⁻¹ at the current density of 20 mA g⁻¹, a high rate capability (142 mAh g⁻¹ at 1000 mA g⁻¹) and an excellent cycling stability for 4000 cycles. Additionally, the PyAq cathode for KIBs also exhibits a high reversible capacity of 143 mAh g⁻¹ with a long cycling life over 800 cycles. The excellent electrochemical performance demonstrates that the newly developed PyAq could be an attractive cathode material for the advanced energy storage technologies.

由于有机氧化还原活性材料的高氧化还原活性，低成本，结构多样性和灵活性，它们已经成为可再充电电池的一类电极材料。然而，有机小分子在有机电解质中的高溶解度通常导致容量随循环快速衰减。在本文中，我们报道了聚（芘的氧化还原活性的共轭微孔聚合物共-蒽醌（PyAq）阴极材料，由pyr和蒽醌单元组成。得益于高度交联的聚合物结构，该结构在有机电解质中具有不溶性，高表面积和丰富的氧化还原活性羰基，PyAq阴极在锂离子电池（LIB）和钾离子电池中均表现出出色的电化学性能（KIB）。具体而言，PyAq阴极LIBS提供的169毫安g的高可逆容量^-1以20mA克的电流密度^-1，高倍率性能（142毫安克^-1以1000mA克^-1）和优异的循环稳定4000个循环。此外，用于KIB的PyAq阴极还具有143 mAh g的高可逆容量^-1，具有超过800个循环的长循环寿命。出色的电化学性能表明，新开发的PyAq可以成为先进储能技术的诱人阴极材料。