Effectual Water Oxidation Reinforced by Three-Dimensional (3D) MnO: A Highly Sustainable Electrocatalyst

Muhammad Ali Ehsan; Asghar Ali; Muhammad Shahzeb Khan; Muhammad Younas; Muhammad Zubair; Amir Habib; Abbas Saeed Hakeem; Naseer Iqbal

doi:10.1021/acsaem.3c00863

Effectual Water Oxidation Reinforced by Three-Dimensional (3D) MnO: A Highly Sustainable Electrocatalyst

Muhammad Ali Ehsan, Asghar Ali, Muhammad Shahzeb Khan, Muhammad Younas, Muhammad Zubair, Amir Habib, Abbas Saeed Hakeem, Naseer Iqbal^*

^*Corresponding author for this work

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

Abstract

Fabricating highly effective, durable, eco-friendly, and low-cost electrocatalysts are challenging in renewable energy applications. Manganese(II) oxide (MnO), an oxygen evolution reaction (OER) catalyst, is an appealing contender in electrocatalytic water oxidation. Herein, we report the fabrication of single-phase MnO films over nickel foam (NF) as 3D electrode materials via a facile aerosol-assisted chemical vapor deposition (AACVD). HR-TEM confirms the nanoscale composition and polycrystalline structure, while the cauliflower-like morphology was observed under FE-SEM supported by EDX for conforming elemental composition. XRD and XPS analysis proved their chemical structure and oxidation states. The electrochemical investigations of MnO films prepared at 60 min revealed excellent OER performance in 1.0 M KOH. The benchmark decade current density was achieved just at an overpotential of 150 mV, whereas at an overpotential of 430 mV, Mn@NF-60 showed a maximum current density of 1158 mA cm^-2 which is 4-6-folds better than its counterparts. The large electrochemical surface area (154 cm²), lower Tafel slope (80.93 mV/dec), and charge transfer resistance (18 Ω), excellent durability throughout extended chronopotentiometry analysis, and fast electron transfer reaction kinetics for OER comprehend Mn@NF-60 as an effectual electrocatalyst. These attributes of a single-phase MnO@NF-60 are credited to ample electroactive sites that enhance electron transfer processes. This study offered highly active single-phase metal oxide thin films by AACVD as 3D electrode materials for plentiful electrocatalytic applications.

Original language	English
Pages (from-to)	7156-7168
Number of pages	13
Journal	ACS Applied Energy Materials
Volume	6
Issue number	13
DOIs	https://doi.org/10.1021/acsaem.3c00863
State	Published - 10 Jul 2023

Bibliographical note

Funding Information:
This research work was funded by institutional fund projects under no (IFP-A-2022-2-4-15). Therefore, the authors gratefully acknowledge the technical and financial support from the Ministry of Education and the University of Hafr Al Batin, Hafr Al Batin, Saudi Arabia.

Publisher Copyright:
© 2023 American Chemical Society.

Keywords

aerosol-assisted chemical deposition
low-overpotential catalyst
manganese oxide
nickel foam
oxygen evolution

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Energy Engineering and Power Technology
Electrochemistry
Materials Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acsaem.3c00863

Cite this

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title = "Effectual Water Oxidation Reinforced by Three-Dimensional (3D) MnO: A Highly Sustainable Electrocatalyst",

abstract = "Fabricating highly effective, durable, eco-friendly, and low-cost electrocatalysts are challenging in renewable energy applications. Manganese(II) oxide (MnO), an oxygen evolution reaction (OER) catalyst, is an appealing contender in electrocatalytic water oxidation. Herein, we report the fabrication of single-phase MnO films over nickel foam (NF) as 3D electrode materials via a facile aerosol-assisted chemical vapor deposition (AACVD). HR-TEM confirms the nanoscale composition and polycrystalline structure, while the cauliflower-like morphology was observed under FE-SEM supported by EDX for conforming elemental composition. XRD and XPS analysis proved their chemical structure and oxidation states. The electrochemical investigations of MnO films prepared at 60 min revealed excellent OER performance in 1.0 M KOH. The benchmark decade current density was achieved just at an overpotential of 150 mV, whereas at an overpotential of 430 mV, Mn@NF-60 showed a maximum current density of 1158 mA cm-2 which is 4-6-folds better than its counterparts. The large electrochemical surface area (154 cm2), lower Tafel slope (80.93 mV/dec), and charge transfer resistance (18 Ω), excellent durability throughout extended chronopotentiometry analysis, and fast electron transfer reaction kinetics for OER comprehend Mn@NF-60 as an effectual electrocatalyst. These attributes of a single-phase MnO@NF-60 are credited to ample electroactive sites that enhance electron transfer processes. This study offered highly active single-phase metal oxide thin films by AACVD as 3D electrode materials for plentiful electrocatalytic applications.",

keywords = "aerosol-assisted chemical deposition, low-overpotential catalyst, manganese oxide, nickel foam, oxygen evolution",

author = "Ehsan, {Muhammad Ali} and Asghar Ali and Khan, {Muhammad Shahzeb} and Muhammad Younas and Muhammad Zubair and Amir Habib and Hakeem, {Abbas Saeed} and Naseer Iqbal",

note = "Funding Information: This research work was funded by institutional fund projects under no (IFP-A-2022-2-4-15). Therefore, the authors gratefully acknowledge the technical and financial support from the Ministry of Education and the University of Hafr Al Batin, Hafr Al Batin, Saudi Arabia. Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

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doi = "10.1021/acsaem.3c00863",

language = "English",

volume = "6",

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T1 - Effectual Water Oxidation Reinforced by Three-Dimensional (3D) MnO

T2 - A Highly Sustainable Electrocatalyst

AU - Ehsan, Muhammad Ali

AU - Ali, Asghar

AU - Khan, Muhammad Shahzeb

AU - Younas, Muhammad

AU - Zubair, Muhammad

AU - Habib, Amir

AU - Hakeem, Abbas Saeed

AU - Iqbal, Naseer

N1 - Funding Information: This research work was funded by institutional fund projects under no (IFP-A-2022-2-4-15). Therefore, the authors gratefully acknowledge the technical and financial support from the Ministry of Education and the University of Hafr Al Batin, Hafr Al Batin, Saudi Arabia. Publisher Copyright: © 2023 American Chemical Society.

PY - 2023/7/10

Y1 - 2023/7/10

N2 - Fabricating highly effective, durable, eco-friendly, and low-cost electrocatalysts are challenging in renewable energy applications. Manganese(II) oxide (MnO), an oxygen evolution reaction (OER) catalyst, is an appealing contender in electrocatalytic water oxidation. Herein, we report the fabrication of single-phase MnO films over nickel foam (NF) as 3D electrode materials via a facile aerosol-assisted chemical vapor deposition (AACVD). HR-TEM confirms the nanoscale composition and polycrystalline structure, while the cauliflower-like morphology was observed under FE-SEM supported by EDX for conforming elemental composition. XRD and XPS analysis proved their chemical structure and oxidation states. The electrochemical investigations of MnO films prepared at 60 min revealed excellent OER performance in 1.0 M KOH. The benchmark decade current density was achieved just at an overpotential of 150 mV, whereas at an overpotential of 430 mV, Mn@NF-60 showed a maximum current density of 1158 mA cm-2 which is 4-6-folds better than its counterparts. The large electrochemical surface area (154 cm2), lower Tafel slope (80.93 mV/dec), and charge transfer resistance (18 Ω), excellent durability throughout extended chronopotentiometry analysis, and fast electron transfer reaction kinetics for OER comprehend Mn@NF-60 as an effectual electrocatalyst. These attributes of a single-phase MnO@NF-60 are credited to ample electroactive sites that enhance electron transfer processes. This study offered highly active single-phase metal oxide thin films by AACVD as 3D electrode materials for plentiful electrocatalytic applications.

AB - Fabricating highly effective, durable, eco-friendly, and low-cost electrocatalysts are challenging in renewable energy applications. Manganese(II) oxide (MnO), an oxygen evolution reaction (OER) catalyst, is an appealing contender in electrocatalytic water oxidation. Herein, we report the fabrication of single-phase MnO films over nickel foam (NF) as 3D electrode materials via a facile aerosol-assisted chemical vapor deposition (AACVD). HR-TEM confirms the nanoscale composition and polycrystalline structure, while the cauliflower-like morphology was observed under FE-SEM supported by EDX for conforming elemental composition. XRD and XPS analysis proved their chemical structure and oxidation states. The electrochemical investigations of MnO films prepared at 60 min revealed excellent OER performance in 1.0 M KOH. The benchmark decade current density was achieved just at an overpotential of 150 mV, whereas at an overpotential of 430 mV, Mn@NF-60 showed a maximum current density of 1158 mA cm-2 which is 4-6-folds better than its counterparts. The large electrochemical surface area (154 cm2), lower Tafel slope (80.93 mV/dec), and charge transfer resistance (18 Ω), excellent durability throughout extended chronopotentiometry analysis, and fast electron transfer reaction kinetics for OER comprehend Mn@NF-60 as an effectual electrocatalyst. These attributes of a single-phase MnO@NF-60 are credited to ample electroactive sites that enhance electron transfer processes. This study offered highly active single-phase metal oxide thin films by AACVD as 3D electrode materials for plentiful electrocatalytic applications.

KW - aerosol-assisted chemical deposition

KW - low-overpotential catalyst

KW - manganese oxide

KW - nickel foam

KW - oxygen evolution

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DO - 10.1021/acsaem.3c00863

M3 - Article

AN - SCOPUS:85164471878

SN - 2574-0962

VL - 6

SP - 7156

EP - 7168

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

IS - 13

ER -

Effectual Water Oxidation Reinforced by Three-Dimensional (3D) MnO: A Highly Sustainable Electrocatalyst

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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