期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 3, 期 5, 页码 2135-2143出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta05643d
关键词
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资金
- National Natural Science Foundation of China [51173127, 51273144, 51373116, 513111129]
- Natural Science Foundation of Tianjin City [14JCZDJC37900]
- Program for New Century Excellent Talents in University [NCET-13-0403]
Hierarchical graphene oxide/polyaniline (GO/PANI) nanocomposites deposited on flexible substrates were synthesized by one-step interfacial electrochemical polymerization. PANI nanorods were coated on the surface of GO to form a three-dimensional nanostructure, which was prepared by the polymerization at the water/chloroform interface. The current density for interfacial electrochemical polymerization was up to 0.5 mA cm(-2), which is one-fold higher than that used in conventional electrochemical methods for nanostructures. Fourier transform infrared spectra, Raman and ultraviolet-visible absorption spectra indicated that PANI in a highly doped state showed a strong pi-pi electronic interaction with GO, resulting in an increased degree of conjugation. The flexible all-solid-state supercapacitors using GO/PANI nanocomposites exhibited a high specific capacitance of 1095 F g(-1) at 1 A g(-1), good rate capability and cycling performance, thus showing an energy density of 24.3 W h kg(-1) and the maximum power density of 28.1 kW kg(-1). This performance outperforms numerous previous solid-state supercapacitors that used carbon-based/PANI nanocomposites because of the synergistic effect of GO and PANI based on hierarchical nanostructures controlled by interfacial electrochemical polymerization.
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