Facile synthesis of self-assembled polyaniline nanorods doped with sulphuric acid for high-performance supercapacitors
| Autor: | Chun-Hui Qu, Shi-Xiang Zhou, Peizhong Feng, Ya-Bo Zhu, Yu Zhou, Xian-Yong Wei, Jie Ma, Li-Tong Guo, Xue-Yu Tao |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Dopant Scanning electron microscope Inorganic chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films chemistry.chemical_compound Aniline chemistry Pseudocapacitor Polyaniline Ammonium persulfate Nanorod Cyclic voltammetry 0210 nano-technology Instrumentation Nuclear chemistry |
| Zdroj: | Vacuum. 143:63-70 |
| ISSN: | 0042-207X |
| DOI: | 10.1016/j.vacuum.2017.05.028 |
| Popis: | Polyaniline (PANI) nanorods have been successfully synthesized via a simple self-assembly method without any surfactant or template. Sulphuric acid (SA) and ammonium persulfate ((NH 4 ) 2 S 2 O 8 ) were used as dopant and oxidant, respectively. The morphologies and structures of the PANI-SA with different [SA]/[aniline] molar ratios were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) and X-ray diffraction (XRD). The results indicated that PANI-SA exhibited different morphologies and properties with the change of [SA]/[aniline] molar ratio. PANI-SA with nanorods morphology was obtained with the highest electrical conductivity of 6.65 S cm −1 when the [SA]/[aniline] molar ratio was 10: 1. Cyclic voltammetry (CV) and galvanostatic discharge/charge (GDC) were conducted to evaluate the electrochemical performances. The results showed that these PANI-SA nanorods displayed a specific capacitance of 449.1 F g −1 at 1 A g −1 and a capacitance retention of 75.15% after 1000 cycles at 1 A g −1 . The high-performance PANI-SA nanorods pave a way for the production of large-scale, low-cost materials for supercapacitor application. |
| Databáze: | OpenAIRE |
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