文献类型：期刊文献

英文题名：A novel layered manganese oxide/poly(aniline-co-o-anisidine) nanocomposite and its application for electrochemical supercapacitor

作者：Yang, Xiao-Feng[1]; Wang, Geng-Chao[1]; Wang, Rui-Yu[1]; Li, Xing-Wei[1]

机构：[1] Key Laboratory for Ultrafine Materials, East China University of Science and Technology, Ministry of Education, Shanghai 200237, China

年份：2010

卷号：55

期号：19

起止页码：5414

外文期刊名：Electrochimica Acta

收录：EI(收录号：20104513358888)

语种：英文

外文关键词：Supercapacitor - Delamination - Polyaniline - Oxides - X ray diffraction - Aniline - Sodium sulfate - Electron microscopy - Manganese oxide - Fourier transform infrared spectroscopy - Solutions - Thermogravimetric analysis

摘要：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 MnO 2/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. ? 2010 Elsevier Ltd.