Mesoporous spinel manganese zinc ferrite for high-performance supercapacitors

Fatma M. Ismail; Mohamed Ramadan; Ahmed M. Abdellah; Ibrahim Ismail; Nageh K. Allam

doi:10.1016/j.jelechem.2018.04.002

Mesoporous spinel manganese zinc ferrite for high-performance supercapacitors

Fatma M. Ismail
, Mohamed Ramadan
, Ahmed M. Abdellah
, Ibrahim Ismail
, Nageh K. Allam^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

101 Scopus citations

Abstract

We report on the synthesis of manganese zinc ferrite (MnZnFe₂O₄) nanoneedles via a simple one-pot coprecipitation method and their characterization using energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), high-resolution transmission electron microscope (HR-TEM) and N₂ adsorption/desorption techniques. The electrochemical performance of MnZnFe₂O₄ nanoneedles-based supercapacitors was investigated, showing superior specific capacitance of 783 F g⁻¹, which is significantly higher than that reported for any ferrite material. Also, the spinel MnZnFe₂O₄ exhibits very high columbic efficiency and an excellent long-term stability. The fabricated asymmetric supercapacitor based on MnZnF₂O₄ nanoneedles/activated carbon electrodes can deliver 15.8 Wh kg⁻¹ energy density at a power density of 899.7 W kg⁻¹. The contribution of the double layer capacitance was found to be only 3.14% of the total specific capacitance and mainly based on psuedocapacitance faradaic mechanism. Therefore, the fabricated MnZnFe₂O₄ electrode is a promising candidate for supercapacitor applications.

Original language	English
Pages (from-to)	111-117
Number of pages	7
Journal	Journal of Electroanalytical Chemistry
Volume	817
DOIs	https://doi.org/10.1016/j.jelechem.2018.04.002
State	Published - 15 May 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Energy density
Mesoporous
Power density
Spinel
Supercapacitor

ASJC Scopus subject areas

Analytical Chemistry
General Chemical Engineering
Electrochemistry

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10.1016/j.jelechem.2018.04.002

Cite this

@article{feed32740d2f4f209ad2a390a4b72102,

title = "Mesoporous spinel manganese zinc ferrite for high-performance supercapacitors",

abstract = "We report on the synthesis of manganese zinc ferrite (MnZnFe2O4) nanoneedles via a simple one-pot coprecipitation method and their characterization using energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), high-resolution transmission electron microscope (HR-TEM) and N2 adsorption/desorption techniques. The electrochemical performance of MnZnFe2O4 nanoneedles-based supercapacitors was investigated, showing superior specific capacitance of 783 F g−1, which is significantly higher than that reported for any ferrite material. Also, the spinel MnZnFe2O4 exhibits very high columbic efficiency and an excellent long-term stability. The fabricated asymmetric supercapacitor based on MnZnF2O4 nanoneedles/activated carbon electrodes can deliver 15.8 Wh kg−1 energy density at a power density of 899.7 W kg−1. The contribution of the double layer capacitance was found to be only 3.14\% of the total specific capacitance and mainly based on psuedocapacitance faradaic mechanism. Therefore, the fabricated MnZnFe2O4 electrode is a promising candidate for supercapacitor applications.",

keywords = "Energy density, Mesoporous, Power density, Spinel, Supercapacitor",

author = "Ismail, \{Fatma M.\} and Mohamed Ramadan and Abdellah, \{Ahmed M.\} and Ibrahim Ismail and Allam, \{Nageh K.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = may,

day = "15",

doi = "10.1016/j.jelechem.2018.04.002",

language = "English",

volume = "817",

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journal = "Journal of Electroanalytical Chemistry",

issn = "1572-6657",

publisher = "Elsevier B.V.",

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T1 - Mesoporous spinel manganese zinc ferrite for high-performance supercapacitors

AU - Ismail, Fatma M.

AU - Ramadan, Mohamed

AU - Abdellah, Ahmed M.

AU - Ismail, Ibrahim

AU - Allam, Nageh K.

PY - 2018/5/15

Y1 - 2018/5/15

N2 - We report on the synthesis of manganese zinc ferrite (MnZnFe2O4) nanoneedles via a simple one-pot coprecipitation method and their characterization using energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), high-resolution transmission electron microscope (HR-TEM) and N2 adsorption/desorption techniques. The electrochemical performance of MnZnFe2O4 nanoneedles-based supercapacitors was investigated, showing superior specific capacitance of 783 F g−1, which is significantly higher than that reported for any ferrite material. Also, the spinel MnZnFe2O4 exhibits very high columbic efficiency and an excellent long-term stability. The fabricated asymmetric supercapacitor based on MnZnF2O4 nanoneedles/activated carbon electrodes can deliver 15.8 Wh kg−1 energy density at a power density of 899.7 W kg−1. The contribution of the double layer capacitance was found to be only 3.14% of the total specific capacitance and mainly based on psuedocapacitance faradaic mechanism. Therefore, the fabricated MnZnFe2O4 electrode is a promising candidate for supercapacitor applications.

AB - We report on the synthesis of manganese zinc ferrite (MnZnFe2O4) nanoneedles via a simple one-pot coprecipitation method and their characterization using energy-dispersive spectroscopy (EDS), X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), high-resolution transmission electron microscope (HR-TEM) and N2 adsorption/desorption techniques. The electrochemical performance of MnZnFe2O4 nanoneedles-based supercapacitors was investigated, showing superior specific capacitance of 783 F g−1, which is significantly higher than that reported for any ferrite material. Also, the spinel MnZnFe2O4 exhibits very high columbic efficiency and an excellent long-term stability. The fabricated asymmetric supercapacitor based on MnZnF2O4 nanoneedles/activated carbon electrodes can deliver 15.8 Wh kg−1 energy density at a power density of 899.7 W kg−1. The contribution of the double layer capacitance was found to be only 3.14% of the total specific capacitance and mainly based on psuedocapacitance faradaic mechanism. Therefore, the fabricated MnZnFe2O4 electrode is a promising candidate for supercapacitor applications.

KW - Energy density

KW - Mesoporous

KW - Power density

KW - Spinel

KW - Supercapacitor

UR - https://www.scopus.com/pages/publications/85044937738

U2 - 10.1016/j.jelechem.2018.04.002

DO - 10.1016/j.jelechem.2018.04.002

M3 - Article

AN - SCOPUS:85044937738

SN - 1572-6657

VL - 817

SP - 111

EP - 117

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

ER -

Mesoporous spinel manganese zinc ferrite for high-performance supercapacitors

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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