期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 31, 页码 12323-12329出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta02231a
关键词
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资金
- Natural Science Foundation of Gansu Province [1107RJZA213]
- Fundamental Research Funds for the Central Universities [lzujbky-2011-21, lzujbky-2013-237]
To improve the electrochemical performance of polyaniline (PANI), crosslinked polyaniline nanorods (CPANI) were prepared via the chemical oxidative copolymerization of aniline with p-phenylenediamine (PPDA) and triphenylamine (TPA). Their morphology and structure were compared with polyaniline (PANI) via transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD) and thermogravimetric analysis (TGA) techniques. CPANI nanorods exhibited an improved electrical conductivity (33.3 S cm(-1)) in comparison with PANI (4.26 S cm(-1)). Its electrochemical performance was studied by galvanostatic charge-discharge (GCD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) tests. CPANI nanorods exhibited a maximum specific capacitance of 455.1 F g(-1) at a scan rate of 1 mV s(-1) in a 1.0 mol L-1 H2SO4 electrolyte, which is much higher than that of PANI (286.7 F g(-1)). Note that the cycling stability of CPANI electrode was improved significantly by chemical crosslinking, and showed higher capacitance retention after 1300 cycles.
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