聚吡咯
蒽醌
材料科学
兴奋剂
硫酸盐
金属
复合材料
金属有机骨架
化学
冶金
聚合
有机化学
光电子学
聚合物
吸附
作者
Kai Wang,Quanlu Wang,Genyang Tang,Tong Zhang,W.L. Li,Tingxi Li,Ying Chen,Haijiao Xie,Young‐Geun Han
出处
期刊:ACS applied polymer materials
[American Chemical Society]
日期:2024-04-25
标识
DOI:10.1021/acsapm.4c00395
摘要
The applications of metal–organic frameworks (MOFs) with intrinsic porous structures are still limited by their low electrical conductivity. Herein, different anthraquinone-based dopants bearing with hydroxyl and sulfonate groups are introduced in situ and anchored on the surface of MOFs to enhance the electrical conductivity during the polymerization of Ni-MOF/polypyrrole (PPy) composites. The doping effect and electrochemical storage mechanism of MOF/PPy composites are investigated using supported experiments and density functional theory. Results show that among the three redox dopants, AQS demonstrates the highest doping level. The specific capacitance of the resulting Ni-MOF/PPy/AQS-12 can reach a high value of 667 F g–1 at the current density of 1 A g–1. The assembled Ni-MOF/PPy/AQS-12//active carbon asymmetric supercapacitor device have energy and power densities of 46.7 W h kg–1 (83.3 μWh cm–2) and 400 W kg–1(800 μW cm–2), excellent cyclic stability with a capacitance of 90.5% retention after 10000 cycles, and flexible stability, offering great potential as a power source for flexible wearable devices.
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