S, N and Cl Separately Doped Graphene Oxide/Polyaniline Composites for Hybrid Supercapacitor Electrode

Abstract

Conducting polymer and carbon-based materials are important in supercapacitor applications as capacitive materials. However, the use of these materials alone limits their application due to poor rate capability and short lifetime or low capacitance. Herein, the supercapacitor electrodes were successfully synthesized by two step process on the carbon-felt. Firstly, S-GO, N-GO and Cl-GO was obtained by chronoamperometry method at room temperature. After, PANI composites were synthesized through a hydrothermal method with S, N and Cl heteroatom doped graphene oxide powders. The best specific capacitance for Cl-GO doped PANI (PANI/Cl-GO) electrode reaches 1217 mFcm−2 (608.3 Fg-1) at 4 A g−1 and, significantly higher that the results of PANI and other hybrids. Moreover, the symmetric supercapacitor using PANI/Cl-GO electrodes demonstrates excellent long-life performance after 5000 cycle (96.9 %). The device has a maximum energy density of 42.8 Wh kg-1 while delivering a power density of 250 W kg-1.

S-Doped Graphene Oxide/N-Doped Graphene Oxide/PANI: A Triple Composite for High-Performance Supercapacitor Applications

“…The resulting layered and fiber-containing structures were compatible with the classical PANI structure. 37,61,62 It was seen that the material structure produced layered (Fig. 2a).…”

“…7,35,36 Especially, doping of graphene by sulfur and nitrogen radically increased specific capacitance of the supercapacitor. 37 Yazar et al (2023) showed the effects of heteroatom doping on the electrochemical behaviors of the graphene based materials. 37 In each doping process, graphene-based materials are doped with different functional groups of these atoms.…”

“…37 Yazar et al (2023) showed the effects of heteroatom doping on the electrochemical behaviors of the graphene based materials. 37 In each doping process, graphene-based materials are doped with different functional groups of these atoms. Therefore, new composite structures that will be prepared by using different ratios of these graphene-based powders and conductive polymers have an important potential especially in the creation of structures with large porosity and high chemical stability.…”

The effect of zinc and sodium borate doping on the structural, morphological, optical, electrical and electrochemical properties of PEDOT:PSS thin film electrodes for flexible and transparent supercapacitor applications

“…For the determination of the capacitance of each sample, eqn (2) and (3) derived from cyclic voltammetry and galvanostatic charge/discharge testing, respectively, were applied:where C is the specific capacitance (F g −1 ), is the integrated area under the C – V curve, Δ V (V) is the operating potential window, m (g) is the weight of the active electrode material, v (V s −1 ) is the applied scan rate, I (A) is the discharge current and Δ t is the discharge time (s). 28…”

“…where C is the specific capacitance (F g À1 ), H IdV is the integrated area under the C-V curve, DV (V) is the operating potential window, m (g) is the weight of the active electrode material, v (V s À1 ) is the applied scan rate, I (A) is the discharge current and Dt is the discharge time (s). 28…”