عنوان مجله
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Journal of Colloid and Interface Science
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چکیده
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We demonstrate the efficient doping of reduced graphene oxide (RGO) by Chlorine and its capacitive performance
was calculated by cyclic voltammetry and charge–discharge cycling in 1 M H2SO4 solution. In
this regard, we are prepared RGO nanosheets through a simple, eco-friendly and efficient electrochemical
method, with selectively functionalized edges by chlorine which involves added the RGO to the halogencontaining
acid solution and dispersed by ultrasonic. After synthesis, Cl-RGO is characterized using X-ray
diffraction, Raman spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, Energy-dispersive X-ray
(EDX) spectroscopy and tunneling electron microscopy. FTIR spectra show the chlorine-containing functional
groups. Energy-dispersive X-ray spectroscopy analysis confirmed the presence of doped chlorine in
RGO. Raman spectroscopy shows a high density of defects in the RGO layer. Electrochemical characteristics
of Cl-RGO are characterized by cyclic voltammetery, galvanostatic charge/discharge and electrochemical
impedance spectroscopy. According to the galvanostatic charge/discharge analysis, Cl-RGO
represents specific capacitance (Cs) of 178.4 F g1 at current density of 1 A g1, which is higher than that
of RGO (100.5 F g1) in H2SO4 solution.
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