کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6470813 | 1424112 | 2017 | 12 صفحه PDF | دانلود رایگان |
- PANI nanospherical are grown on ERGO layer by CV electrodeposition.
- The application of ERGO-PANI nanocomposites for supercapacitors studies systematically.
- The as-synthesized nanocomposites of ERGO-PANI show good electrochemical property and cycling stability.
- Performance of ERGO-PANI nanocompsites were improved by synergistic effects between two components.
In this paper, high performance supercapacitor based on electrochemical reduced graphene oxide (ERGO)-polyaniline (PANI) nanocomposite film was prepared in facile two steps. ERGO sheets synthesized on surface of glassy carbon electrode (GCE) by an effective and environment-friendly electrochemical reduction of graphene oxide (GO), followed PANI formed on ERGO surface via cyclic voltammetry electrodeposition at potential window â0.20 to 0.80Â V at a scan rate of 50Â mVÂ sâ1. Electrochemical results indicate that ERGO-PANI nanocomposites exhibit a good capacitance performance with maximum specific capacitance of 1084 Fgâ1, and high specific energy density of 53.12Â Wh kgâ1 with specific power density of 500.61Â W kgâ1 at a current density of 3.22Â mAÂ cmâ2 in 1Â M H2SO4 aqueous solution. Improved electrochemical performance of the nanocomposites arises from synergistic combination of electrically conductive ERGO and highly capacitive behavior of PANI. Therefore, the ERGO-PANI nanocomposite electrodes are promising candidate for application in energy storage devices. Moreover, the products have been successfully characterized by X-ray diffraction (XRD), Fourier transformation spectroscopy (FT-IR), scanning electron microscope (SEM), energy dispersive spectrometry (EDS) and atomic force microscopy (AFM).
The increasing societal demands for portable electronics vehicles prompted researchers to develop electrochemical energy storage systems such as supercapacitors and lithium-ion batteries. Supercapacitors has been renowned as one of the most next generation energy storage devices due to its long cycle life high power density and. Therefore, in this study, we reported the synthesis electrochemical reduced graphene oxide (ERGO)-polyaniline (PANI) nanocomposites as supercapacitors.189
Journal: Electrochimica Acta - Volume 245, 10 August 2017, Pages 575-586