Iron oxide supercapacitor of high volumetric energy and power density using binder-free supersonic spraying and self-healing rGO

Taegun Kim; Edmund Samuel; Chanwoo Park; Ali Aldalbahi; Mohamed El-Newehy; Yoon Mook Kang; Hae Seok Lee; Sam S. Yoon

doi:10.1016/j.ceramint.2022.01.250

Iron oxide supercapacitor of high volumetric energy and power density using binder-free supersonic spraying and self-healing rGO

Taegun Kim, Edmund Samuel, Chanwoo Park, Ali Aldalbahi, Mohamed El-Newehy, Yoon Mook Kang, Hae Seok Lee, Sam S. Yoon

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

6 Citations (Scopus)

Abstract

Iron oxide (Fe₂O₃) nanoparticles and reduced graphene oxide (rGO) sheets were supersonically sprayed onto a nickel substrate to fabricate flexible supercapacitors. The supersonic impact velocity was adjusted by varying the air chamber pressure from 2 to 6 bar, which facilitated the self-healing of Stone-Wall defects in rGO sheets. Supersonic spraying caused exfoliation of the rGO sheets, which in turn increased the surface area and adherence of the Fe₂O₃ nanoparticles. The optimal case exhibited a specific capacitance of 1.44 F⋅cm^-2 at a current rate of 1.5 mA⋅cm^-2 and the energy density was 14.23 mWh⋅cm^-3 at 250 mW⋅cm^-3. The width of the potential window increased to 1.4 V, implying a significant increase in the energy storage capability. The energy density of the supersonically sprayed Fe₂O₃/rGO electrode also showed no signs of deterioration even when the increased current density interfered with the electrode performance.

Original language	English
Pages (from-to)	13684-13694
Number of pages	11
Journal	Ceramics International
Volume	48
Issue number	10
DOIs	https://doi.org/10.1016/j.ceramint.2022.01.250
Publication status	Published - 2022 May 15

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government NRF-2020R1A5A1018153, NRF-2021R1A2C2010530, and 2020K1A3A1A74114847. The authors acknowledge King Saud University , Riyadh, Saudi Arabia, for funding this work through Researchers Supporting Project number (RSP-2021/30).

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

Keywords

Exfoliation
FeO/rGO sheets
Supercapacitor
Supersonic spraying

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.2022.01.250

Cite this

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title = "Iron oxide supercapacitor of high volumetric energy and power density using binder-free supersonic spraying and self-healing rGO",

abstract = "Iron oxide (Fe2O3) nanoparticles and reduced graphene oxide (rGO) sheets were supersonically sprayed onto a nickel substrate to fabricate flexible supercapacitors. The supersonic impact velocity was adjusted by varying the air chamber pressure from 2 to 6 bar, which facilitated the self-healing of Stone-Wall defects in rGO sheets. Supersonic spraying caused exfoliation of the rGO sheets, which in turn increased the surface area and adherence of the Fe2O3 nanoparticles. The optimal case exhibited a specific capacitance of 1.44 F⋅cm-2 at a current rate of 1.5 mA⋅cm-2 and the energy density was 14.23 mWh⋅cm-3 at 250 mW⋅cm-3. The width of the potential window increased to 1.4 V, implying a significant increase in the energy storage capability. The energy density of the supersonically sprayed Fe2O3/rGO electrode also showed no signs of deterioration even when the increased current density interfered with the electrode performance.",

keywords = "Exfoliation, FeO/rGO sheets, Supercapacitor, Supersonic spraying",

author = "Taegun Kim and Edmund Samuel and Chanwoo Park and Ali Aldalbahi and Mohamed El-Newehy and Kang, {Yoon Mook} and Lee, {Hae Seok} and Yoon, {Sam S.}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government NRF-2020R1A5A1018153, NRF-2021R1A2C2010530, and 2020K1A3A1A74114847. The authors acknowledge King Saud University , Riyadh, Saudi Arabia, for funding this work through Researchers Supporting Project number (RSP-2021/30). Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd and Techna Group S.r.l.",

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doi = "10.1016/j.ceramint.2022.01.250",

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AU - Kim, Taegun

AU - Samuel, Edmund

AU - Park, Chanwoo

AU - Aldalbahi, Ali

AU - El-Newehy, Mohamed

AU - Kang, Yoon Mook

AU - Lee, Hae Seok

AU - Yoon, Sam S.

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government NRF-2020R1A5A1018153, NRF-2021R1A2C2010530, and 2020K1A3A1A74114847. The authors acknowledge King Saud University , Riyadh, Saudi Arabia, for funding this work through Researchers Supporting Project number (RSP-2021/30). Publisher Copyright: © 2022 Elsevier Ltd and Techna Group S.r.l.

PY - 2022/5/15

Y1 - 2022/5/15

N2 - Iron oxide (Fe2O3) nanoparticles and reduced graphene oxide (rGO) sheets were supersonically sprayed onto a nickel substrate to fabricate flexible supercapacitors. The supersonic impact velocity was adjusted by varying the air chamber pressure from 2 to 6 bar, which facilitated the self-healing of Stone-Wall defects in rGO sheets. Supersonic spraying caused exfoliation of the rGO sheets, which in turn increased the surface area and adherence of the Fe2O3 nanoparticles. The optimal case exhibited a specific capacitance of 1.44 F⋅cm-2 at a current rate of 1.5 mA⋅cm-2 and the energy density was 14.23 mWh⋅cm-3 at 250 mW⋅cm-3. The width of the potential window increased to 1.4 V, implying a significant increase in the energy storage capability. The energy density of the supersonically sprayed Fe2O3/rGO electrode also showed no signs of deterioration even when the increased current density interfered with the electrode performance.

AB - Iron oxide (Fe2O3) nanoparticles and reduced graphene oxide (rGO) sheets were supersonically sprayed onto a nickel substrate to fabricate flexible supercapacitors. The supersonic impact velocity was adjusted by varying the air chamber pressure from 2 to 6 bar, which facilitated the self-healing of Stone-Wall defects in rGO sheets. Supersonic spraying caused exfoliation of the rGO sheets, which in turn increased the surface area and adherence of the Fe2O3 nanoparticles. The optimal case exhibited a specific capacitance of 1.44 F⋅cm-2 at a current rate of 1.5 mA⋅cm-2 and the energy density was 14.23 mWh⋅cm-3 at 250 mW⋅cm-3. The width of the potential window increased to 1.4 V, implying a significant increase in the energy storage capability. The energy density of the supersonically sprayed Fe2O3/rGO electrode also showed no signs of deterioration even when the increased current density interfered with the electrode performance.

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KW - Supercapacitor

KW - Supersonic spraying

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ER -

Iron oxide supercapacitor of high volumetric energy and power density using binder-free supersonic spraying and self-healing rGO

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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