Incremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties

Abstract By using a facile hydrothermal method, we synthesized Ni1−xMnxFe2O4 nanoparticles as supercapacitor electrode materials and studied how the incremental substitution of Ni with Mn would affect their structural, electronic, and electrochemical properties. X-ray diffractometry confirmed the si...

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Autores principales:	Samira Sharifi, Ahmad Yazdani, Kourosh Rahimi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e7ec0a71e80041a9b22962787a5756f8
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spelling	oai:doaj.org-article:e7ec0a71e80041a9b22962787a5756f82021-12-02T18:18:32ZIncremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties10.1038/s41598-020-67802-z2045-2322https://doaj.org/article/e7ec0a71e80041a9b22962787a5756f82020-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-67802-zhttps://doaj.org/toc/2045-2322Abstract By using a facile hydrothermal method, we synthesized Ni1−xMnxFe2O4 nanoparticles as supercapacitor electrode materials and studied how the incremental substitution of Ni with Mn would affect their structural, electronic, and electrochemical properties. X-ray diffractometry confirmed the single-phase spinel structure of the nanoparticles. Raman spectroscopy showed the conversion of the inverse structure of NiFe2O4 to the almost normal structure of MnFe2O4. Field-emission scanning electron microscopy showed the spherical shape of the obtained nanoparticles with a size in the range of 20–30 nm. Optical bandgaps were found to decrease as the content of Mn increased. Electrochemical characterizations of the samples indicated the excellent performance and the desirable cycling stability of the prepared nanoparticles for supercapacitors. In particular, the specific capacitance of the prepared Ni1−xMnxFe2O4 nanoparticles was found to increase as the content of Mn increased, reaching the highest specific capacitance of 1,221 F/g for MnFe2O4 nanoparticles at the current density of 0.5 A/g with the corresponding power density of 473.96 W/kg and the energy density of 88.16 Wh/kg. We also demonstrated the real-world application of the prepared MnFe2O4 nanoparticles. We performed also a DFT study to verify the changes in the geometrical and electronic properties that could affect the electrochemical performance.Samira SharifiAhmad YazdaniKourosh RahimiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-15 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Samira Sharifi Ahmad Yazdani Kourosh Rahimi Incremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties
description	Abstract By using a facile hydrothermal method, we synthesized Ni1−xMnxFe2O4 nanoparticles as supercapacitor electrode materials and studied how the incremental substitution of Ni with Mn would affect their structural, electronic, and electrochemical properties. X-ray diffractometry confirmed the single-phase spinel structure of the nanoparticles. Raman spectroscopy showed the conversion of the inverse structure of NiFe2O4 to the almost normal structure of MnFe2O4. Field-emission scanning electron microscopy showed the spherical shape of the obtained nanoparticles with a size in the range of 20–30 nm. Optical bandgaps were found to decrease as the content of Mn increased. Electrochemical characterizations of the samples indicated the excellent performance and the desirable cycling stability of the prepared nanoparticles for supercapacitors. In particular, the specific capacitance of the prepared Ni1−xMnxFe2O4 nanoparticles was found to increase as the content of Mn increased, reaching the highest specific capacitance of 1,221 F/g for MnFe2O4 nanoparticles at the current density of 0.5 A/g with the corresponding power density of 473.96 W/kg and the energy density of 88.16 Wh/kg. We also demonstrated the real-world application of the prepared MnFe2O4 nanoparticles. We performed also a DFT study to verify the changes in the geometrical and electronic properties that could affect the electrochemical performance.
format	article
author	Samira Sharifi Ahmad Yazdani Kourosh Rahimi
author_facet	Samira Sharifi Ahmad Yazdani Kourosh Rahimi
author_sort	Samira Sharifi
title	Incremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties
title_short	Incremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties
title_full	Incremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties
title_fullStr	Incremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties
title_full_unstemmed	Incremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties
title_sort	incremental substitution of ni with mn in nife2o4 to largely enhance its supercapacitance properties
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/e7ec0a71e80041a9b22962787a5756f8
work_keys_str_mv	AT samirasharifi incrementalsubstitutionofniwithmninnife2o4tolargelyenhanceitssupercapacitanceproperties AT ahmadyazdani incrementalsubstitutionofniwithmninnife2o4tolargelyenhanceitssupercapacitanceproperties AT kouroshrahimi incrementalsubstitutionofniwithmninnife2o4tolargelyenhanceitssupercapacitanceproperties
_version_	1718378306279047168

Incremental substitution of Ni with Mn in NiFe2O4 to largely enhance its supercapacitance properties

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