Open AccessPreparation of Polyaniline/Graphene Oxide Thin Films Microelectrodes through Electrochemical Reduction at Different Potential Range for High-Performance Supercapacitors
Author(s) -
Mukta Das,
Ashish Kumar Sarker
Publication year - 2020
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2020.22893
Subject(s) - supercapacitor , graphene , polyaniline , capacitance , horizontal scan rate , x ray photoelectron spectroscopy , materials science , raman spectroscopy , electrochemistry , nanotechnology , oxide , thin film , chemical engineering , electrode , optoelectronics , chemistry , cyclic voltammetry , composite material , optics , metallurgy , polymer , physics , engineering , polymerization
In this article, the fabrication and performance of supercapacitors prepared through electrochemicalreduction applied at different voltage range from polyaniline/graphene oxide (PANi/GO) thin films,which are renewable materials with an excellent yield of energy conversion is reported. The PANi/GOthin film was reduced electrochemically with different potential windows, scan rate and number ofcycles which was acquired using layer-by-layer (LBL) assembly method. The resultant electrodesdisplayed various specific capacitances after pre-reduction with different conditions.The influence ofthe electrochemical reduction was investigated by Raman spectroscopy and X-ray photoelectronspectroscopy for capacitance performance. The optimum conditions were explored for supercapacitorapplication and an elevated specific capacitance 2619 F cm-3 (areal capacitance 18.38 mF cm-2) at 1mV s-1 obtaining the film reduced with applied potential of -0.87 to -0.5 V. This study could introducethe new possibilities for the improvement of the electrochemical reduction effects to the compositematerials for high-performance supercapacitors.