A new organic polymer cathode namely poly(9,10-phenanthraquinone-alt-benzene) (PPQ, ∼190 mAh g⁻¹) is designed and synthesized for sodium-ion batteries (SIBs). Adequate characterizations are carried out to define its polymer nature. In half cells, the discharge capacity of PPQ shows almost no attenuation, stably maintaining at 150 mAh g⁻¹ during 300 cycles. In full cells, the PPQ II Na₃Bi SIBs realize the stable discharge capacities of average 126 mAh g⁻¹_cathode during 150 cycles (100 mA g⁻¹_cathode) and average 97 mAh g⁻¹_cathode during 800 cycles (800 mA g⁻¹_cathode), along with the average discharge voltage of ∼ 1.5 V. To the best of our knowledge, the results of PPQ can represent the new advancement for organic polymer cathodes in SIBs.

为钠离子电池 (SIB) 设计并合成了一种新的有机聚合物正极，即聚 (9,10-菲醌-交替苯) (PPQ, ∼190 mAh g ^-1 )。进行了充分的表征以确定其聚合物性质。在半电池中，PPQ的放电容量几乎没有衰减，在300次循环中稳定地维持在150 mAh g ^{-1 。}在全电池中，PPQ II Na ₃ Bi SIBs实现了150次循环（100 mA g ^-1_正极）平均126 mAh g ^-1_正极和800次循环（800 mA g ）平均97 mAh g ^-1_{正极的稳定放电容量。} ^-1_阴极)，平均放电电压约为 1.5 V。据我们所知，PPQ 的结果可以代表 SIB 中有机聚合物正极的新进展。