An Azo Polymer with Abundant Active Sites and Extended Conjugation as a Stable Cathode for High‐Performance Zinc‐Organic Batteries

Abstract Developing stable cathodes with high capacity and rapid redox kinetics is pivotal for aqueous zinc‐organic batteries (ZOBs). A huge challenge lies in balancing the density of active sites and electronic conductivity of organic cathodes. Herein, an azo polymer from 4,5,9,10‐pyrene‐tetraone (PTAP) possessing high active components and extended conjugated structure was achieved. The extended conjugated system linked by the azo groups facilitates extensive electron delocalization and a low band gap, which endows the PTAP with enhanced electronic conductivity reaching 4.26×10 −3 S m −1 . The azo groups themselves serve as active centers for two‐electron transfer, leading to a significant increase in the…

• NN
  National Natural Science Foundation of China

  Award: 22375089
• JP
  Jiangsu Provincial Key Research and Development Program

  Award: BE2022332
• YC
  Yangzhou City Agricultural Key R and D Program

  Award: 2022YFB2502104, 2022YFA1602700