Spectroscopic analyses of iron doped protonated polyaniline/graphene oxide system.

Autor: Alghunaim NS; Department of Physics, Faculty of Science, University of Jeddah, Jeddah, Kingdom of Saudi Arabia., El-Khodary SA; Building Physics and Environment Institute, Housing& Building National Research Center (HBRC), 12311 Dokki, Giza, Egypt. Electronic address: s_elkhodary2@yahoo.com., Ibrahim M; Spectroscopy Department, National Research Centre, El-Bohouth Str., 12622, Dokki, Giza, Egypt. Electronic address: medahmed6@yahoo.com., El-Enany GM; Scientific Department, Faculty of Engineering, Port Said University, Port Said, Egypt.
Jazyk: angličtina
Zdroj: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2019 Jun 05; Vol. 216, pp. 349-358. Date of Electronic Publication: 2019 Mar 19.
DOI: 10.1016/j.saa.2019.03.053
Abstrakt: Fe 3+ and H + co-doped PANI/GO (graphene oxide) composites with different iron dopant ratio depending on the starting FeCl 3 (GOPNI-1, GOPNI-2, GOPNI-3 and GOPNI-4) are prepared. The formations of composite samples are investigated by some characterization techniques such as XRD, ATR-IR, UV-Vis spectrophotometer and thermal properties by TGA. While, the Nitrogen adsorption/desorption isotherm for (GOPNI-3) shows high specific surface area 48.7 m 2  g -1 depending on Brunauer-Emmett-Teller (BET) method. Owing to the high surface area as well as the synergistic effect between polyaniline and graphene oxide the electrochemical performance of (GOPNI-3) shows high specific capacitance 1610.09 F g -1 at 1 A g -1 in 1 M H 2 SO 4 acidic aqueous electrolyte. A symmetric supercapacitor device (SCs) with superbly electrochemical performance is fabricated using GOPNI-3 electrodes. The symmetric device exhibits high specific capacitance 810.88 F g -1 at 1 A g -1 in which the maximum energy density and power density of 18.02 Wh Kg -1 and 189.68 W kg -1 , respectively. Moreover, the SCs device shows good cycling stability (67.1%) after 1000 cycles at a scan rate 200 mV s -1 .
(Copyright © 2019 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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