Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (3): 20250306.doi: 10.7503/cjcu20250306

• Materials Chemistry • Previous Articles     Next Articles

Preparation of a High-capacity π -Conjugated Polymer and Its Application in Rechargeable Aqueous Zinc Battery Cathode

LIN Zirui1,2(), XING Yaowen1,2, SONG Yihao1,2, GUI Xiahui1,2()   

  1. 1.State Key Laboratory of Coking Coal Resources Green Exploitation
    2.Chinese National Engineering Research;Center of Coal Preparation and Purification,China University of Mining and Technology,Xuzhou 221116,China
  • Received:2025-10-21 Online:2026-03-10 Published:2025-12-07
  • Contact: LIN Zirui E-mail:linzrys@cumt.edu.cn;guixiahui1985@163.com
  • Supported by:
    the Xuzhou Provincial-City Joint Basic Research Special Fund, China(KC25022);the National Natural Science Foundation of China(52504319);the National Key Research and Development Program of China(2021YFC2902600)

Abstract:

π-Conjugated polymers constructed from active small molecules exhibit extended conjugated structures, overcoming the solubility and conductivity challenges of small molecules. Along with their high theoretical capacities, such materials have attracted increasing attention as cathodes for rechargeable aqueous zinc batteries(RAZBs). Herein, we designed and synthesized an active-site-rich π-conjugated polymer, poly(5,8-diaza-1,4-naphthoquinone)(PANQ), as a high-performance RAZBs cathode material. The PANQ cathode delivers high discharge capacities, rate capability and cycling stability, achieving a reversible capacity of 443.4 mA·h/g at 0.2 A/g, corresponding to 90.5% of its theoretical capacity, and retaining 65% of its capacity after 1000 discharge-charge cycles. This work demonstrates a promising π-conjugated polymer with efficient energy-storage capability, offering a potential cathode candidate for developing high-performance RAZBs and other energy-storage systems.

Key words: π-Conjugated polymer, Aqueous zinc battery, Organic cathode, Energy storage mechanism, High- capacity

CLC Number: 

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