Characterization of two-step solution grown Ni(OH)2/S@MnO2 core-shell heterostructure as binder-free active electrode material for high performance planar solid-state asymmetric supercapattery cell

Saheed A. Adewinbi; Lukman O. Animasahun; Vusani M. Maphiri; Gbadebo I. Olatona; Omar H. Abd-Elkader; S. K. Mosa; Haekyonug Kim; Bidini A. Taleatu

doi:10.1016/j.inoche.2025.114008

Characterization of two-step solution grown Ni(OH)₂/S@MnO₂ core-shell heterostructure as binder-free active electrode material for high performance planar solid-state asymmetric supercapattery cell

Saheed A. Adewinbi^*, Lukman O. Animasahun, Vusani M. Maphiri, Gbadebo I. Olatona, Omar H. Abd-Elkader, S. K. Mosa, Haekyonug Kim, Bidini A. Taleatu

^*Corresponding author for this work

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

Abstract

Supercapattery represents a new energy storage device technology aimed at closing the gap between the supercapacitor's high power density and the battery's high energy density. Therefore, this report unveiled the utilization of binder-free solution-grown Ni(OH)₂/S@MnO₂ heterostructured electrode film in the fabrication of a novel hybrid solid-state supercapattery planar device. Some surface characterization of the material revealed successful sulfurization of electrodeposited particulate MnO₂ film (S@MnO₂), forming a base core layer for the amalgamation of electroless deposited thinly flakelike Ni(OH)₂ scaffold film. The electro-sulfurization process yielded the deposition of thin layer Mn-(O/S) composite film on ITO with enhanced pseudocapacitive responses. The electrochemical charge storage measurements also revealed highly stable Ni(OH)₂/S@MnO₂ supercapattery electrode via the synergistic S@MnO₂ pseudocapacitive and scaffolding Ni(OH)₂ battery-type, responses. Consequently, the as-grown heterostructure exhibited a capacitance value of 2825 F/g (113.56 mF cm⁻²) and with capacity value of 1252 C/g at 1 A/g current density. In the two-electrode mode, a fabricated device encompassing Ni(OH)₂/S@MnO₂ positive electrode and thermally reduced graphene oxide (TRGO) negative electrode, exhibited comparable areal capacitance (8.7 mF cm⁻²), high cell voltage (1.7 V) and areal energy density 3.542 μWh cm⁻² at 0.1 mAcm⁻² current density. Excellent charge–discharge capacitance retention (87.1 % after 20,000 cycles) and voltage holding strength were also demonstrated by the cell.

Original language	English
Article number	114008
Journal	Inorganic Chemistry Communications
Volume	174
DOIs	https://doi.org/10.1016/j.inoche.2025.114008
Publication status	Published - Apr 2025
Externally published	Yes

Keywords

Electrodeposition
Energy density
Heterostructure
MnO-Ni(OH)
Sulfurization
Supercapattery

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10.1016/j.inoche.2025.114008

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Adewinbi, S. A., Animasahun, L. O., Maphiri, V. M., Olatona, G. I., Abd-Elkader, O. H., Mosa, S. K., Kim, H., & Taleatu, B. A. (2025). Characterization of two-step solution grown Ni(OH)₂/S@MnO₂ core-shell heterostructure as binder-free active electrode material for high performance planar solid-state asymmetric supercapattery cell. Inorganic Chemistry Communications, 174, Article 114008. https://doi.org/10.1016/j.inoche.2025.114008

@article{77464d9d5b674785b168e21cc8904301,

title = "Characterization of two-step solution grown Ni(OH)2/S@MnO2 core-shell heterostructure as binder-free active electrode material for high performance planar solid-state asymmetric supercapattery cell",

abstract = "Supercapattery represents a new energy storage device technology aimed at closing the gap between the supercapacitor's high power density and the battery's high energy density. Therefore, this report unveiled the utilization of binder-free solution-grown Ni(OH)2/S@MnO2 heterostructured electrode film in the fabrication of a novel hybrid solid-state supercapattery planar device. Some surface characterization of the material revealed successful sulfurization of electrodeposited particulate MnO2 film (S@MnO2), forming a base core layer for the amalgamation of electroless deposited thinly flakelike Ni(OH)2 scaffold film. The electro-sulfurization process yielded the deposition of thin layer Mn-(O/S) composite film on ITO with enhanced pseudocapacitive responses. The electrochemical charge storage measurements also revealed highly stable Ni(OH)2/S@MnO2 supercapattery electrode via the synergistic S@MnO2 pseudocapacitive and scaffolding Ni(OH)2 battery-type, responses. Consequently, the as-grown heterostructure exhibited a capacitance value of 2825 F/g (113.56 mF cm−2) and with capacity value of 1252 C/g at 1 A/g current density. In the two-electrode mode, a fabricated device encompassing Ni(OH)2/S@MnO2 positive electrode and thermally reduced graphene oxide (TRGO) negative electrode, exhibited comparable areal capacitance (8.7 mF cm−2), high cell voltage (1.7 V) and areal energy density 3.542 μWh cm−2 at 0.1 mAcm−2 current density. Excellent charge–discharge capacitance retention (87.1 % after 20,000 cycles) and voltage holding strength were also demonstrated by the cell.",

keywords = "Electrodeposition, Energy density, Heterostructure, MnO-Ni(OH), Sulfurization, Supercapattery",

author = "Adewinbi, {Saheed A.} and Animasahun, {Lukman O.} and Maphiri, {Vusani M.} and Olatona, {Gbadebo I.} and Abd-Elkader, {Omar H.} and Mosa, {S. K.} and Haekyonug Kim and Taleatu, {Bidini A.}",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier B.V.",

year = "2025",

month = apr,

doi = "10.1016/j.inoche.2025.114008",

language = "English",

volume = "174",

journal = "Inorganic Chemistry Communications",

issn = "1387-7003",

publisher = "Elsevier B.V.",

}

Adewinbi, SA, Animasahun, LO, Maphiri, VM, Olatona, GI, Abd-Elkader, OH, Mosa, SK, Kim, H & Taleatu, BA 2025, 'Characterization of two-step solution grown Ni(OH)₂/S@MnO₂ core-shell heterostructure as binder-free active electrode material for high performance planar solid-state asymmetric supercapattery cell', Inorganic Chemistry Communications, vol. 174, 114008. https://doi.org/10.1016/j.inoche.2025.114008

Characterization of two-step solution grown Ni(OH)₂/S@MnO₂ core-shell heterostructure as binder-free active electrode material for high performance planar solid-state asymmetric supercapattery cell. / Adewinbi, Saheed A.; Animasahun, Lukman O.; Maphiri, Vusani M. et al.
In: Inorganic Chemistry Communications, Vol. 174, 114008, 04.2025.

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

TY - JOUR

T1 - Characterization of two-step solution grown Ni(OH)2/S@MnO2 core-shell heterostructure as binder-free active electrode material for high performance planar solid-state asymmetric supercapattery cell

AU - Adewinbi, Saheed A.

AU - Animasahun, Lukman O.

AU - Maphiri, Vusani M.

AU - Olatona, Gbadebo I.

AU - Abd-Elkader, Omar H.

AU - Mosa, S. K.

AU - Kim, Haekyonug

AU - Taleatu, Bidini A.

PY - 2025/4

Y1 - 2025/4

N2 - Supercapattery represents a new energy storage device technology aimed at closing the gap between the supercapacitor's high power density and the battery's high energy density. Therefore, this report unveiled the utilization of binder-free solution-grown Ni(OH)2/S@MnO2 heterostructured electrode film in the fabrication of a novel hybrid solid-state supercapattery planar device. Some surface characterization of the material revealed successful sulfurization of electrodeposited particulate MnO2 film (S@MnO2), forming a base core layer for the amalgamation of electroless deposited thinly flakelike Ni(OH)2 scaffold film. The electro-sulfurization process yielded the deposition of thin layer Mn-(O/S) composite film on ITO with enhanced pseudocapacitive responses. The electrochemical charge storage measurements also revealed highly stable Ni(OH)2/S@MnO2 supercapattery electrode via the synergistic S@MnO2 pseudocapacitive and scaffolding Ni(OH)2 battery-type, responses. Consequently, the as-grown heterostructure exhibited a capacitance value of 2825 F/g (113.56 mF cm−2) and with capacity value of 1252 C/g at 1 A/g current density. In the two-electrode mode, a fabricated device encompassing Ni(OH)2/S@MnO2 positive electrode and thermally reduced graphene oxide (TRGO) negative electrode, exhibited comparable areal capacitance (8.7 mF cm−2), high cell voltage (1.7 V) and areal energy density 3.542 μWh cm−2 at 0.1 mAcm−2 current density. Excellent charge–discharge capacitance retention (87.1 % after 20,000 cycles) and voltage holding strength were also demonstrated by the cell.

AB - Supercapattery represents a new energy storage device technology aimed at closing the gap between the supercapacitor's high power density and the battery's high energy density. Therefore, this report unveiled the utilization of binder-free solution-grown Ni(OH)2/S@MnO2 heterostructured electrode film in the fabrication of a novel hybrid solid-state supercapattery planar device. Some surface characterization of the material revealed successful sulfurization of electrodeposited particulate MnO2 film (S@MnO2), forming a base core layer for the amalgamation of electroless deposited thinly flakelike Ni(OH)2 scaffold film. The electro-sulfurization process yielded the deposition of thin layer Mn-(O/S) composite film on ITO with enhanced pseudocapacitive responses. The electrochemical charge storage measurements also revealed highly stable Ni(OH)2/S@MnO2 supercapattery electrode via the synergistic S@MnO2 pseudocapacitive and scaffolding Ni(OH)2 battery-type, responses. Consequently, the as-grown heterostructure exhibited a capacitance value of 2825 F/g (113.56 mF cm−2) and with capacity value of 1252 C/g at 1 A/g current density. In the two-electrode mode, a fabricated device encompassing Ni(OH)2/S@MnO2 positive electrode and thermally reduced graphene oxide (TRGO) negative electrode, exhibited comparable areal capacitance (8.7 mF cm−2), high cell voltage (1.7 V) and areal energy density 3.542 μWh cm−2 at 0.1 mAcm−2 current density. Excellent charge–discharge capacitance retention (87.1 % after 20,000 cycles) and voltage holding strength were also demonstrated by the cell.

KW - Electrodeposition

KW - Energy density

KW - Heterostructure

KW - MnO-Ni(OH)

KW - Sulfurization

KW - Supercapattery

UR - http://www.scopus.com/inward/record.url?scp=85217034795&partnerID=8YFLogxK

U2 - 10.1016/j.inoche.2025.114008

DO - 10.1016/j.inoche.2025.114008

M3 - Article

AN - SCOPUS:85217034795

SN - 1387-7003

VL - 174

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

M1 - 114008

ER -

Adewinbi SA, Animasahun LO, Maphiri VM, Olatona GI, Abd-Elkader OH, Mosa SK et al. Characterization of two-step solution grown Ni(OH)₂/S@MnO₂ core-shell heterostructure as binder-free active electrode material for high performance planar solid-state asymmetric supercapattery cell. Inorganic Chemistry Communications. 2025 Apr;174:114008. doi: 10.1016/j.inoche.2025.114008

Characterization of two-step solution grown Ni(OH)₂/S@MnO₂ core-shell heterostructure as binder-free active electrode material for high performance planar solid-state asymmetric supercapattery cell

Abstract

Keywords

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