Amorphous iridium oxide coating on TiO2 for efficient electrocatalytic oxygen evolution reaction

Zhang, Kaiyang; Guo, Chuanming; Wu, Yun; Yao, Rui; Zhao, Qiang; Li, Jinping; Liu, Guang

doi:10.1016/j.ijhydene.2024.05.114

International Journal of Hydrogen Energy

2024

DOI: 10.1016/j.ijhydene.2024.05.114

|View full text |Cite

Amorphous iridium oxide coating on TiO2 for efficient electrocatalytic oxygen evolution reaction

Kaiyang Zhang,

Chuanming Guo,

Yun Wu

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

2025

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Iridium nanoparticles for oxygen evolution reaction on carbon and TiO2 supports from a Raman perspective

Moriau,

Marić,

Bele

et al. 2025

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Iridium nanoparticles for oxygen evolution reaction on carbon and TiO2 supports from a Raman perspective

Moriau,

Marić,

Bele

et al. 2025

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Crystalline–Amorphous IrO_x Supported on Perovskite Nanotubes for pH-Universal OER

Li,

Wang,

Peng

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Designing catalysts with desirable oxygen evolution reaction (OER) performance under pH-universal conditions is of great significance to promote the development of hydrogen production. Herein, we successfully synthesized a crystalline−amorphous IrO x supported on perovskite oxide nanotubes to obtain IrO x @La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3 with superior OER performance in whole pH media. The overpotential of the IrO x @La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3 catalyst in media of pH 14, 7.2, and 1 has been demonstrated to be 120, 400, and 143 mV, respectively, with no significant element dissolution as well as double-layer capacitance decay after the durability test. Through comparative experiments with IrO x @ CNT and the physical mixture of IrO x and La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3 , it is found that the strong metal−support interaction (SMSI) in IrO x @ La 0.6 Ca 0.4 Fe 0.8 Ni 0.2 O 3 makes IrO x exist in an amorphous state rich in Ir 3+ , which is closely associated with the surface-active species Ir-OH. Through the regulation of Ir by a perovskite oxide support at the heterointerface, the reaction breaks through the limitation of the adsorbate evolution mechanism (AEM) and converts to a lattice-oxygen-mediated mechanism (LOM), which was fully demonstrated by the addition of the probe tetramethylammonium cation (TMA + ), a LOM reaction intermediate, to the electrolyte. This work fills the research gap of perovskite oxide supported Ir-based catalysts with heterogeneous structures, providing an excellent strategy for the structural design of efficient pH-universal OER catalysts for hydrogen production systems.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Amorphous iridium oxide coating on TiO2 for efficient electrocatalytic oxygen evolution reaction

Cited by 2 publications

References 58 publications

Iridium nanoparticles for oxygen evolution reaction on carbon and TiO2 supports from a Raman perspective

Iridium nanoparticles for oxygen evolution reaction on carbon and TiO2 supports from a Raman perspective

Crystalline–Amorphous IrO_x Supported on Perovskite Nanotubes for pH-Universal OER

Contact Info

Product

Resources

About

Amorphous iridium oxide coating on TiO2 for efficient electrocatalytic oxygen evolution reaction

Cited by 2 publications

References 58 publications

Iridium nanoparticles for oxygen evolution reaction on carbon and TiO2 supports from a Raman perspective

Iridium nanoparticles for oxygen evolution reaction on carbon and TiO2 supports from a Raman perspective

Crystalline–Amorphous IrOx Supported on Perovskite Nanotubes for pH-Universal OER

Contact Info

Product

Resources

About

Crystalline–Amorphous IrO_x Supported on Perovskite Nanotubes for pH-Universal OER