Flexible and freestanding manganese/iron oxide carbon nanofibers for supercapacitor electrodes

Edmund Samuel; Ali Aldalbahi; Mohamed El-Newehy; Hany El-Hamshary; Sam S. Yoon

doi:10.1016/j.ceramint.2022.03.106

Flexible and freestanding manganese/iron oxide carbon nanofibers for supercapacitor electrodes

Edmund Samuel, Ali Aldalbahi, Mohamed El-Newehy, Hany El-Hamshary, Sam S. Yoon

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

34 Citations (Scopus)

Abstract

In this study, freestanding carbon nanofibers embedded with bimetallic manganese-iron oxide are fabricated for flexible supercapacitor applications via electrospinning. A polyacrylonitrile solution is used as the carbon source, and poly(methyl methacrylate) functions as a sacrificial template to produce microporous carbon nanofibers. The concentrations of manganese acetate and iron acetylacetonate are varied to determine the fabrication conditions for maximal electrochemical performance. The optimized supercapacitor cell exhibits a capacitance of 467 F g⁻¹ at a current density of 1 A g⁻¹ and a capacitance retention of 94% at the end of N = 10,000 cycles. The higher mechanical durability of the electrode is confirmed by the absence of electrochemical deterioration at the end of performing 500 bending cycles. Overall, the sample comprising carbon nanofibers, in which the optimal amount of manganese-iron oxide is embedded, has the required pseudocapacitive characteristics and is an interesting choice for high-energy-storage supercapacitor electrodes.

Original language	English
Pages (from-to)	18374-18383
Number of pages	10
Journal	Ceramics International
Volume	48
Issue number	13
DOIs	https://doi.org/10.1016/j.ceramint.2022.03.106
Publication status	Published - 2022 Jul 1

Bibliographical note

Funding Information:
This project was financially supported by the National Plan for Science, Technology and Innovation (MAARIFAH), King Abdulaziz City for Science and Technology , Kingdom of Saudi Arabia (No. 14-NAN2221-02).

Publisher Copyright:
© 2022 Elsevier Ltd and Techna Group S.r.l.

Keywords

Bimetallic oxide
Carbon nanofiber
Electrospinning
Manganese iron oxide
Supercapacitor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2022.03.106

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title = "Flexible and freestanding manganese/iron oxide carbon nanofibers for supercapacitor electrodes",

abstract = "In this study, freestanding carbon nanofibers embedded with bimetallic manganese-iron oxide are fabricated for flexible supercapacitor applications via electrospinning. A polyacrylonitrile solution is used as the carbon source, and poly(methyl methacrylate) functions as a sacrificial template to produce microporous carbon nanofibers. The concentrations of manganese acetate and iron acetylacetonate are varied to determine the fabrication conditions for maximal electrochemical performance. The optimized supercapacitor cell exhibits a capacitance of 467 F g−1 at a current density of 1 A g−1 and a capacitance retention of 94% at the end of N = 10,000 cycles. The higher mechanical durability of the electrode is confirmed by the absence of electrochemical deterioration at the end of performing 500 bending cycles. Overall, the sample comprising carbon nanofibers, in which the optimal amount of manganese-iron oxide is embedded, has the required pseudocapacitive characteristics and is an interesting choice for high-energy-storage supercapacitor electrodes.",

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AU - Samuel, Edmund

AU - Aldalbahi, Ali

AU - El-Newehy, Mohamed

AU - El-Hamshary, Hany

AU - Yoon, Sam S.

N1 - Funding Information: This project was financially supported by the National Plan for Science, Technology and Innovation (MAARIFAH), King Abdulaziz City for Science and Technology , Kingdom of Saudi Arabia (No. 14-NAN2221-02). Publisher Copyright: © 2022 Elsevier Ltd and Techna Group S.r.l.

PY - 2022/7/1

Y1 - 2022/7/1

N2 - In this study, freestanding carbon nanofibers embedded with bimetallic manganese-iron oxide are fabricated for flexible supercapacitor applications via electrospinning. A polyacrylonitrile solution is used as the carbon source, and poly(methyl methacrylate) functions as a sacrificial template to produce microporous carbon nanofibers. The concentrations of manganese acetate and iron acetylacetonate are varied to determine the fabrication conditions for maximal electrochemical performance. The optimized supercapacitor cell exhibits a capacitance of 467 F g−1 at a current density of 1 A g−1 and a capacitance retention of 94% at the end of N = 10,000 cycles. The higher mechanical durability of the electrode is confirmed by the absence of electrochemical deterioration at the end of performing 500 bending cycles. Overall, the sample comprising carbon nanofibers, in which the optimal amount of manganese-iron oxide is embedded, has the required pseudocapacitive characteristics and is an interesting choice for high-energy-storage supercapacitor electrodes.

AB - In this study, freestanding carbon nanofibers embedded with bimetallic manganese-iron oxide are fabricated for flexible supercapacitor applications via electrospinning. A polyacrylonitrile solution is used as the carbon source, and poly(methyl methacrylate) functions as a sacrificial template to produce microporous carbon nanofibers. The concentrations of manganese acetate and iron acetylacetonate are varied to determine the fabrication conditions for maximal electrochemical performance. The optimized supercapacitor cell exhibits a capacitance of 467 F g−1 at a current density of 1 A g−1 and a capacitance retention of 94% at the end of N = 10,000 cycles. The higher mechanical durability of the electrode is confirmed by the absence of electrochemical deterioration at the end of performing 500 bending cycles. Overall, the sample comprising carbon nanofibers, in which the optimal amount of manganese-iron oxide is embedded, has the required pseudocapacitive characteristics and is an interesting choice for high-energy-storage supercapacitor electrodes.

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Flexible and freestanding manganese/iron oxide carbon nanofibers for supercapacitor electrodes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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