Enhanced Capacitance Performance by Coupling 2D Conductive Metal–Organic Frameworks and Conducting Polymers for Hybrid Supercapacitors
Kang Chen, Shihang Zhao, Jie Sun, Jiachao Zhou, Yingchao Wang, Kai Tao, Xunwen Xiao, Lei Han
Abstract
A core–shell structure composite material consisting of a conductive polymer and 2D conductive metal–organic frameworks (CMOFs) was assembled by hydrothermal methods. The use of polypyrrole (PPy) as a backbone effectively prevents the aggregation of CMOFs. Its own hollow structure provides better conductivity while shortening the ion diffusion pathway. Benefiting from the rational structural design, the performance of 572.2 F g–1 is demonstrated by the core–shell PPy@NiCo-CAT electrode. In addition, we incorporated the material into the hybrid supercapacitor (HSC) and verified its excellent energy density and lifetime. Furthermore, 12 light-emitting diodes (LEDs) can be illuminated by two HSCs connected in series. The strategy of compounding conductive polymers with 2D CMOFs provides additional options for developing electrode materials for high-performance HSC devices.