Premium
One‐step electrochemical preparation of ternary phthalocyanine/acid‐activated multiwalled carbon nanotube/polypyrrole‐based electrodes and their supercapacitor applications
Author(s) -
Gorduk Ozge,
Gorduk Semih,
Gencten Metin,
Sahin Mutlu,
Sahin Yucel
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.5634
Subject(s) - polypyrrole , materials science , supercapacitor , cyclic voltammetry , electrode , electrochemistry , dielectric spectroscopy , carbon nanotube , chemical engineering , conductive polymer , nanotube , scanning electron microscope , phthalocyanine , fourier transform infrared spectroscopy , nanotechnology , polymer , composite material , chemistry , engineering
Summary In the present work, we report one‐step preparation of phthalocyanine/acid‐activated multiwalled carbon nanotube/polypyrrole modified pencil graphite electrodes (Pc/AA‐MWCNT/PPy/PGE) for electrochemical supercapacitor applications. Conducting polymer‐based ternary electrode materials were prepared by in situ electropolymerization of pyrrole in the presence of AA‐MWCNT and Pc. The structures of prepared electrodes were characterized by different techniques such as Fourier transform infrared, scanning electron microscopy, energy‐dispersive spectrometer, atomic force microscope, Brunauer‐Emmett‐Teller, cyclic voltammetry, and electrochemical impedance spectroscopy to examine their structural and electrochemical properties. This study examines for the first time supercapacitive properties of ZnPc/AA‐MWCNT/PPy/PGE and CuPc/AA‐MWCNT/PPy/PGE. The specific capacitances of electrodes have been found as 304 F/g for CuPc/AA‐MWCNT/PPy/PGE and 117 F/g ZnPc/AA‐MWCNT/PPy/PGE with 10 A/g charge‐discharge current densities. When compared to all preparation electrode materials in the literature, CuPc/AA‐MWCNT/PPy/PGE exhibited superior supercapacitive behavior. The synergistic effect of PPy, AA‐MWCNT, and Pc with excellent physical interface presents better charge storage capacity and less charge transfer resistance. We observed that the Pc/AA‐MWCNT/PPy/PGE electrodes can synergistically improve the charge storage property in comparison to its individual constituents.