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- W2783887950 abstract "Reduced graphene oxide (RGO)–polyaniline nanotubes (PAniNTs) nanocomposites have been synthesized by in situ reduction of GO. The morphology and structure of the nanocomposites are characterized by HRTEM, XRD and micro-Raman spectroscopy. The electrical and electrochemical performances of the nanocomposites are investigated for different RGO concentrations by conductivity measurements, cyclic voltammetry, charge-discharge and electrochemical impedance spectroscopy. Highest gravimetric specific capacitance of 448.71 F g−1 is obtained for 40 wt.% of RGO-PAniNTs nanocomposite as compared to 194.92 F g−1 for pure PAniNTs in 1 M KCl electrolyte. To further improve the electrochemical performance of the nanocomposite electrode, KI is used as redox-additive with 1 M KCl electrolyte. Highest gravimetric specific capacitance of 876.43 F g−1 and an improved cyclic stability of 91% as compared to 79% without KI after 5000 cycles is achieved for an optimized 0.1 M KI concentration. This is attributed to the presence of different ionic species of I− ions that give rise to a number of possible redox reactions improving the pseudocapacitance of the electrode. This improved capacitive performance is compared with that of catechol redox-additive in 1 M KCl electrolyte, and that of KI and catechol redox-additives added to 1 M H2SO4 electrolyte." @default.
- W2783887950 created "2018-01-26" @default.
- W2783887950 creator A5026655780 @default.
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- W2783887950 date "2018-02-02" @default.
- W2783887950 modified "2023-10-12" @default.
- W2783887950 title "Enhanced electrochemical performance of in situ reduced graphene oxide–polyaniline nanotubes hybrid nanocomposites using redox-additive aqueous electrolyte" @default.
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- W2783887950 doi "https://doi.org/10.1088/1361-6463/aaa833" @default.
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