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    Interfacial Approach toward Benzene-Bridged Polypyrrole Film-Based Micro-Supercapacitors with Ultrahigh Volumetric Power Density

    Year: 2020

    Journal: Adv. Funct. Mater., Volume 30, FEB 12

    Authors: Jiang, KY; Baburin, IA; Han, P; Yang, CQ; Fu, XB; Yao, YF; Li, JT; Canovas, E; Seifert, G; Chen, JS; Bonn, M; Feng, XL; Zhuang, XD

    Organizations: National Key Research and Development Program of China [2017YFE9134000]; NSFC Excellent Young Scientists Fund [51722304]; NSFCNational Natural Science Foundation of China (NSFC) [21720102002, 51973114, 51811530013]; Shanghai Pujiang Talent Program [18PJ1406100]; Max Planck Graduate CenterMax Planck Society; regional government of Comunidad de Madrid [2017-T1/AMB-5207]; European UnionEuropean Commission [785219]

    Keywords: benzene-bridged polypyrrole; interface; laser; micro-supercapacitor; semiconductive film

    2D soft nanomaterials are an emerging research field due to their versatile chemical structures, easily tunable properties, and broad application potential. In this study, a benzene-bridged polypyrrole film with a large area, up to a few square centimeters, is synthesized through an interfacial polymerization approach. As-prepared semiconductive films exhibit a bandgap of approximate to 2 eV and a carrier mobility of approximate to 1.5 cm(2) V-1 s(-1), inferred from time-resolved terahertz spectroscopy. The samples are employed to fabricate in-plane micro-supercapacitors (MSCs) by laser scribing and exhibit an ultrahigh areal capacitance of 0.95 mF cm(-2), using 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]) as an electrolyte. Importantly, the maximum energy and power densities of the developed MSCs reach values up to 50.7 mWh cm(-3) and 9.6 kW cm(-3), respectively; the performance surpassing most of the 2D material-based MSCs is reported to date.
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