TY - EJOU
AU - Cai, Zhouqishuo
AU - Liu, Donghua
AU - Zhao, Yanan
AU - Lin, Zewen
AU - Lin, Shumin
AU - Zhong, Dan
AU - Bai, Hua
TI - p-Phenylenediamine-Benzoquinone Polymer/Reduced Graphene Oxide Flexible Composite Films as a Cathode Material for Rechargeable Lithium-Ion Batteries
T2 - Journal of Polymer Materials
PY -
VL -
IS -
SN - 0976-3449
AB - Benzoquinone-derived organic cathodes are gaining prominence in rechargeable lithium-ion batteries owing to their rapid redox kinetics and sustainable origins. However, their practical application is severely limited by the high solubility of benzoquinone species in organic electrolytes, which leads to rapid capacity decay during cycling. Although polymerization can effectively suppress dissolution, the resulting polymers often suffer from poor electronic conductivity and low utilization of redox-active sites. Herein, a p-phenylenediamine-benzoquinone polymer (PPD-BQ) was synthesized and integrated with reduced graphene oxide (RGO) to fabricate self-supported flexible composite films through a simple one-pot strategy. The uniformly distributed polymer layers effectively prevent the restacking of RGO nanosheets, while the highly conductive RGO framework accelerates charge transport and suppresses polymer dissolution through strong interfacial interactions. Consequently, the PPD-BQ/RGO composite films demonsreste outstanding electrochemical properties, achieving a reversible capacity of 132 mAh g−1 at 2000 mA g−1, with 73.0% capacity retention after 3000 cycles at 1500 mA g−1. In addition, the composite films maintain 93.6% of their room-temperature capacity at 0°C in a DOL-based electrolyte, demonstrating excellent low-temperature electrochemical activity. This work presents a simple and scalable approach for fabricating flexible, high-performance organic electrode materials for sustainable energy-storage applications.
KW - p-phenylenediamine-benzoquinone polymer; reduced graphene oxide; composite films; lithium-ion batteries; flexible electrode materials
DO - 10.32604/jpm.2026.085943