A novel layered manganese oxide/poly(aniline-co-o-anisidine) nanocomposite and its application for electrochemical supercapacitor |
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Authors: | Xiao-feng Yang Rui-yu Wang Xing-wei Li |
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Affiliation: | Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, PR China |
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Abstract: | A novel layered manganese oxide/poly(aniline-co-o-anisidine) nanocomposite MnO2/P(An-co-oAs)] was successfully synthesized by a delamination/reassembling process using P(An-co-oAs) ionomer and layered manganese oxide in aqueous solution. This nanocomposite obtained was then characterized by Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), electron microscopy (SEM), and thermogravimetric (TG) analysis. X-ray diffraction and electron microscope analysis showed that the MnO2/P(An-co-oAs) nanocomposite had a lamellar structure with increasing interlayer spacing. The MnO2/P(An-co-oAs) nanocomposite exhibited substantially improved conductivity, which was near 100 times greater than that of its pristine MnO2 (3.5 × 10−7 S cm−1). The specific capacitance of the MnO2/P(An-co-oAs) nanocomposite reached 262 F g−1 in 1 M Na2SO4 at a current density of 1 A g−1, which was significantly higher than that of either of its two pristine materials MnO2 (182 F g−1) or P(An-co-oAs) (127 F g−1)] owing to the synergic effect between the two pristine components. The fabrication mechanism of the nanocomposite was also proposed and discussed in this paper. |
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Keywords: | Layered manganese oxide Conducting polymer Delamination/reassembling Supercapacitor |
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