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Facile synthesis of copper oxide nanoparticles‐decorated polyaniline nanofibers with enhanced electrochemical performance as supercapacitor electrode
Author(s) -
Ahmad Md. Wasi,
Anand Surbhi,
Fatima Atiya,
Yang DuckJoo,
Choudhury Arup
Publication year - 2021
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.5414
Subject(s) - materials science , supercapacitor , nanocomposite , polyaniline , electrode , nanoparticle , capacitance , chemical engineering , copper oxide , cyclic voltammetry , oxide , electrochemistry , monoclinic crystal system , nanofiber , nanotechnology , composite material , crystal structure , polymer , metallurgy , crystallography , chemistry , engineering , polymerization
Copper oxide‐decorated polyaniline nanofibers (CuO@PANiNFs) nanocomposite was prepared through in situ chemical deposition of CuO nanoparticles on the PANiNFs. The results of spectroscopic analyses suggested the presence of strong interfacial interactions between CuO nanoparticles and PANiNF matrix, while X‐ray diffraction (XRD) analysis confirmed the formation of CuO monoclinic crystal phase on PANiNFs. SEM images displayed a uniform dispersion of CuO nanoparticles on the surface of PANiNFs. The highest specific capacitance of 486.9 F/g and area specific capacitance of 169 F/cm 2 at 0.5 mA/cm 2 were achieved for the CuO@PANiNFs nanocomposite. This could be ascribed to the low solution resistance and charge‐transfer resistance of nanocomposite electrode as observed in the electrical impedance spectroscopic results. The CuO@PANiNFs electrode revealed good cyclic stability with ~82% capacitance retention after 2000 cycles. The CuO@PANiNFs electrode delivered a maximum energy density of 67.7 Wh/kg, which is nearly 1.8 times higher than that of the pure PANiNFs electrode. Therefore, the present CuO@PANiNFs nanocomposite with high specific capacitance and energy density could be used as a cost‐effective, ecofriendly, and sustainable supercapacitor electrode material.