Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 22, Issue 4, Pages 1249-1256Publisher
SPRINGER
DOI: 10.1007/s10008-017-3870-2
Keywords
Aniline-terminated; Silica; Polyaniline; Supercapacitor; Sonication
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Funding
- National Natural Science Foundation of China [21401079, 21501069]
- Fundamental Research Funds for the Central Universities [JUSRP51626B]
- Natural Science Foundation of Jiangsu Province of China [BK20140158, BK20161128, BK20161166]
- Research Project of Xuzhou [KC15SM038]
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions [PPZY2015B181]
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In this study, the composites of polyaniline (PANI) and aniline-terminated silica (M-SiO2), as supercapacitor electrodes, were prepared by a facile method of mechanical agitation combined with sonication. The obtained PANI/M-SiO2 composites were analyzed using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) measurements. Compared with PANI, PANI/M-SiO2 exhibited a maximum specific capacitance of 307.5 F/g by GCD test at 1 A/g with a potential range of 0-0.8 V. PANI/M-SiO2 retained approximately 93% of its capacitance after 500 cycles of charge-discharge at 8 A/g, whereas pure PANI retained only 70%. The excellent electrochemical performances of the PANI/M-SiO2 composites were attributed to the synergetic interaction between the PANI and M-SiO2 nanoparticles.
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