Electrochemical properties of IrO2-Ti2O5-Co3O4 coated Ti anode in acid media

Nayef M. Alanazi; Abdullatif I. Al-Abdulhadi; Talal Y. Al-Zharani; Turki A. Al-Khaldi; Rasha A. Alghamdi; Anaam H. Al-Shaikh Ali; Shouwen Shen

doi:10.1016/j.surfcoat.2019.06.059

Electrochemical properties of IrO2-Ti2O5-Co3O4 coated Ti anode in acid media

Nayef M. Alanazi, Abdullatif I. Al-Abdulhadi, Talal Y. Al-Zharani, Turki A. Al-Khaldi, Rasha A. Alghamdi, Anaam H. Al-Shaikh Ali, Shouwen Shen

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

6 Scopus citations

Abstract

Iridium oxide-tantalum pentoxide (IrO2–Ta2O5) coated anodes were prepared by thermal decomposition on a tubular titanium substrate with and without cobalt salts containing a precursor. The surface morphology and microstructure of the deposited coatings were investigated by use of an environmental scanning electron microscope (ESEM), X-ray fluorescence (XRF) spectrometry and scanning transmission electron microscope (STEM). The electrochemical properties of the deposited thin coatings were examined by cyclic voltammetry, potentiodynamic polarization scan and electrochemical impedance spectroscopy (EIS) techniques. The service life cycle of the applied coatings was evaluated under electrolysis at a constant current density of 1 A cm−2 in 1 M sulfuric acid (H2SO4) solution. The role of cobalt oxide (Co3O4) in the electrocatalytic activity and stability of IrO2–Ta2O5 coating are discussed. A small amount of Co3O4 resulted in improving the life cycle of the IrO2-Ta2O5 anode in the 1 M H2SO4 solution due to dense nature coating. Meanwhile, the Co3O4 had no significant contribution to the electrochemical measurements.

Original language	English (US)
Pages (from-to)	815-821
Number of pages	7
Journal	Surface and Coatings Technology
Volume	374
DOIs	https://doi.org/10.1016/j.surfcoat.2019.06.059
State	Published - Sep 2019
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2021-03-31
Acknowledgements: Authors would like to thank Saudi Aramco management to give permission to publish this work. Also, they would like to thank KAUST University for the TEM analysis.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

ASJC Scopus subject areas

Materials Chemistry
Surfaces, Coatings and Films
General Chemistry
Surfaces and Interfaces
Condensed Matter Physics

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10.1016/j.surfcoat.2019.06.059

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@article{be360cc7bfcf49bab6ae98675e6c7454,

title = "Electrochemical properties of IrO2-Ti2O5-Co3O4 coated Ti anode in acid media",

abstract = "Iridium oxide-tantalum pentoxide (IrO2–Ta2O5) coated anodes were prepared by thermal decomposition on a tubular titanium substrate with and without cobalt salts containing a precursor. The surface morphology and microstructure of the deposited coatings were investigated by use of an environmental scanning electron microscope (ESEM), X-ray fluorescence (XRF) spectrometry and scanning transmission electron microscope (STEM). The electrochemical properties of the deposited thin coatings were examined by cyclic voltammetry, potentiodynamic polarization scan and electrochemical impedance spectroscopy (EIS) techniques. The service life cycle of the applied coatings was evaluated under electrolysis at a constant current density of 1 A cm−2 in 1 M sulfuric acid (H2SO4) solution. The role of cobalt oxide (Co3O4) in the electrocatalytic activity and stability of IrO2–Ta2O5 coating are discussed. A small amount of Co3O4 resulted in improving the life cycle of the IrO2-Ta2O5 anode in the 1 M H2SO4 solution due to dense nature coating. Meanwhile, the Co3O4 had no significant contribution to the electrochemical measurements.",

author = "Alanazi, {Nayef M.} and Al-Abdulhadi, {Abdullatif I.} and Al-Zharani, {Talal Y.} and Al-Khaldi, {Turki A.} and Alghamdi, {Rasha A.} and {Al-Shaikh Ali}, {Anaam H.} and Shouwen Shen",

note = "KAUST Repository Item: Exported on 2021-03-31 Acknowledgements: Authors would like to thank Saudi Aramco management to give permission to publish this work. Also, they would like to thank KAUST University for the TEM analysis. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2019",

month = sep,

doi = "10.1016/j.surfcoat.2019.06.059",

language = "English (US)",

volume = "374",

pages = "815--821",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Electrochemical properties of IrO2-Ti2O5-Co3O4 coated Ti anode in acid media

AU - Alanazi, Nayef M.

AU - Al-Abdulhadi, Abdullatif I.

AU - Al-Zharani, Talal Y.

AU - Al-Khaldi, Turki A.

AU - Alghamdi, Rasha A.

AU - Al-Shaikh Ali, Anaam H.

AU - Shen, Shouwen

N1 - KAUST Repository Item: Exported on 2021-03-31 Acknowledgements: Authors would like to thank Saudi Aramco management to give permission to publish this work. Also, they would like to thank KAUST University for the TEM analysis. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2019/9

Y1 - 2019/9

N2 - Iridium oxide-tantalum pentoxide (IrO2–Ta2O5) coated anodes were prepared by thermal decomposition on a tubular titanium substrate with and without cobalt salts containing a precursor. The surface morphology and microstructure of the deposited coatings were investigated by use of an environmental scanning electron microscope (ESEM), X-ray fluorescence (XRF) spectrometry and scanning transmission electron microscope (STEM). The electrochemical properties of the deposited thin coatings were examined by cyclic voltammetry, potentiodynamic polarization scan and electrochemical impedance spectroscopy (EIS) techniques. The service life cycle of the applied coatings was evaluated under electrolysis at a constant current density of 1 A cm−2 in 1 M sulfuric acid (H2SO4) solution. The role of cobalt oxide (Co3O4) in the electrocatalytic activity and stability of IrO2–Ta2O5 coating are discussed. A small amount of Co3O4 resulted in improving the life cycle of the IrO2-Ta2O5 anode in the 1 M H2SO4 solution due to dense nature coating. Meanwhile, the Co3O4 had no significant contribution to the electrochemical measurements.

AB - Iridium oxide-tantalum pentoxide (IrO2–Ta2O5) coated anodes were prepared by thermal decomposition on a tubular titanium substrate with and without cobalt salts containing a precursor. The surface morphology and microstructure of the deposited coatings were investigated by use of an environmental scanning electron microscope (ESEM), X-ray fluorescence (XRF) spectrometry and scanning transmission electron microscope (STEM). The electrochemical properties of the deposited thin coatings were examined by cyclic voltammetry, potentiodynamic polarization scan and electrochemical impedance spectroscopy (EIS) techniques. The service life cycle of the applied coatings was evaluated under electrolysis at a constant current density of 1 A cm−2 in 1 M sulfuric acid (H2SO4) solution. The role of cobalt oxide (Co3O4) in the electrocatalytic activity and stability of IrO2–Ta2O5 coating are discussed. A small amount of Co3O4 resulted in improving the life cycle of the IrO2-Ta2O5 anode in the 1 M H2SO4 solution due to dense nature coating. Meanwhile, the Co3O4 had no significant contribution to the electrochemical measurements.

UR - http://hdl.handle.net/10754/668391

UR - https://linkinghub.elsevier.com/retrieve/pii/S0257897219306826

UR - http://www.scopus.com/inward/record.url?scp=85067871610&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2019.06.059

DO - 10.1016/j.surfcoat.2019.06.059

M3 - Article

SN - 0257-8972

VL - 374

SP - 815

EP - 821

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Electrochemical properties of IrO2-Ti2O5-Co3O4 coated Ti anode in acid media

Abstract

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ASJC Scopus subject areas

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