期刊
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
卷 20, 期 9, 页码 2025-2035出版社
SPRINGER
DOI: 10.1007/s10098-018-1573-8
关键词
Diazotization; One-pot synthesis; Reduced graphene oxide; Polyaniline; Supercapacitors
资金
- Centre for Precision Analysis and Research, National Taipei University of Technology, Taipei
A high-performance reduced graphene oxide-polyaniline (RGO-PANI) electrode material was prepared through commercially viable, facile one-pot synthesis, applying famed diazotization chemistry and grafting strategy. In this work, 4-nitroaniline was utilized as a grafting substrate to bind reduced graphene oxide and polyaniline covalently to a highly stable and efficient supercapacitor electrode material. The chemical composition and structural analysis of covalently functionalized RGO-PANI nanocomposites were characterized by X-ray diffraction, field-emission scanning electron microscopy, Raman spectroscopy, UV-visible spectroscopy, and Fourier-transform infrared spectroscopy. The electrochemical behavior of the nanocomposites was analyzed through cyclic voltammetry, galvanostatic charge and discharge, and electrochemical impedance spectroscopy. The prepared nanocomposite shows a high specific capacitance of 490Fg(-1) in 1M Na2SO4 with outstanding cyclic stability (10,000 cycles). The applied covalent functionalization through grafting strategy was the principal factor for both high specific capacitance and excellent cyclic stability. [GRAPHICS] .
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