Preparation and Electrochemical Characterization of Mesoporous Polyaniline-Silica Nanocomposites as an Electrode Material for PseudocapacitorsReportar como inadecuado




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Beijing Key Laboratory of Specialty Elastomer Composite Materials, College of Materials Science & Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China

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State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China





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Authors to whom correspondence should be addressed.



Academic Editor: Rafael Luque

Abstract Mesoporous polyaniline-silica nanocomposites with a full interpenetrating structure for pseudocapacitors were synthesized via the vapor phase approach. The morphology and structure of the nanocomposites were deeply investigated by scanning electron microscopy, infrared spectroscopy, X-ray diffraction, thermal gravimetric analysis and nitrogen adsorption-desorption tests. The results present that the mesoporous nanocomposites possess a uniform particle morphology and full interpenetrating structure, leading to a continuous conductive polyaniline network with a large specific surface area. The electrochemical performances of the nanocomposites were tested in a mixed solution of sulfuric acid and potassium iodide. With the merits of a large specific surface area and suitable pore size distribution, the nanocomposite showed a large specific capacitance 1702.68 farad F-g due to its higher utilization of the active material. This amazing value is almost three-times larger than that of bulk polyaniline when the same mass of active material was used. View Full-Text

Keywords: polyaniline; mesoporous silica; nanocomposites; vapor phase approach; specific capacitance polyaniline; mesoporous silica; nanocomposites; vapor phase approach; specific capacitance





Autor: Lei Zu 1,2, Xiuguo Cui 1,* , Yanhua Jiang 1, Zhongkai Hu 1,2, Huiqin Lian 1, Yang Liu 1, Yushun Jin 1, Yan Li 1 and Xiaodong Wang 2,*

Fuente: http://mdpi.com/



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