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Challenges and Opportunities for the Emerging Iridium Center on Transition Metal Oxide for PEM Water Electrolysis.

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Title: Challenges and Opportunities for the Emerging Iridium Center on Transition Metal Oxide for PEM Water Electrolysis.
Authors: Zhang, Bingjie1,2 (AUTHOR), Yang, Fulin1 (AUTHOR), Sengeni, Anantharaj3 (AUTHOR), Feng, Ligang1,2 (AUTHOR) ligang.feng@kust.edu.cn
Source: Advanced Energy Materials. May2026, Vol. 16 Issue 20, p1-29. 29p.
Subject Terms: *Iridium, *Transition metal oxides, *Water electrolysis, *Oxygen evolution reactions, *Durability, *Catalytic activity, *Electrocatalysts, *Hydrogen production
Abstract: The development of highly efficient and stable electrocatalysts for the oxygen evolution reaction (OER) is crucial for advancing proton exchange membrane water electrolysis (PEMWE) for sustainable hydrogen production. Recently, Iridium centers on transition metal oxides (TMOs) have emerged as promising alternatives to conventional noble metal oxides, demonstrating superior activity, stability, and cost‐effectiveness. This review systematically summarizes these advancements by elucidating the intrinsic mechanisms and dynamic evolution patterns of Ir active centers under acidic OER conditions, discussing core strategies for enhancing catalytic performance, and attention is mainly directed to the industrial application requirements by evaluating breakthrough solutions for key technical challenges, including long‐term stability under high‐current‐density operation and Ir dissolution suppression. Finally, from the perspective of rational design, the review outlines current challenges and prospects for oxide‐supported Ir catalysts, emphasizing the urgent need for advanced operando characterization techniques and scalable fabrication processes. By integrating fundamental research with practical applications, this review aims to provide theoretical guidance and technical references for developing next‐generation OER catalysts suitable for large‐scale PEMWE implementation. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194136189
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Challenges and Opportunities for the Emerging Iridium Center on Transition Metal Oxide for PEM Water Electrolysis.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Bingjie%22">Zhang, Bingjie</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Fulin%22">Yang, Fulin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sengeni%2C+Anantharaj%22">Sengeni, Anantharaj</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feng%2C+Ligang%22">Feng, Ligang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> ligang.feng@kust.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Advanced+Energy+Materials%22">Advanced Energy Materials</searchLink>. May2026, Vol. 16 Issue 20, p1-29. 29p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Iridium%22">Iridium</searchLink><br />*<searchLink fieldCode="DE" term="%22Transition+metal+oxides%22">Transition metal oxides</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+electrolysis%22">Water electrolysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Oxygen+evolution+reactions%22">Oxygen evolution reactions</searchLink><br />*<searchLink fieldCode="DE" term="%22Durability%22">Durability</searchLink><br />*<searchLink fieldCode="DE" term="%22Catalytic+activity%22">Catalytic activity</searchLink><br />*<searchLink fieldCode="DE" term="%22Electrocatalysts%22">Electrocatalysts</searchLink><br />*<searchLink fieldCode="DE" term="%22Hydrogen+production%22">Hydrogen production</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The development of highly efficient and stable electrocatalysts for the oxygen evolution reaction (OER) is crucial for advancing proton exchange membrane water electrolysis (PEMWE) for sustainable hydrogen production. Recently, Iridium centers on transition metal oxides (TMOs) have emerged as promising alternatives to conventional noble metal oxides, demonstrating superior activity, stability, and cost‐effectiveness. This review systematically summarizes these advancements by elucidating the intrinsic mechanisms and dynamic evolution patterns of Ir active centers under acidic OER conditions, discussing core strategies for enhancing catalytic performance, and attention is mainly directed to the industrial application requirements by evaluating breakthrough solutions for key technical challenges, including long‐term stability under high‐current‐density operation and Ir dissolution suppression. Finally, from the perspective of rational design, the review outlines current challenges and prospects for oxide‐supported Ir catalysts, emphasizing the urgent need for advanced operando characterization techniques and scalable fabrication processes. By integrating fundamental research with practical applications, this review aims to provide theoretical guidance and technical references for developing next‐generation OER catalysts suitable for large‐scale PEMWE implementation. [ABSTRACT FROM AUTHOR]
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      – Type: doi
        Value: 10.1002/aenm.70852
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      – Code: eng
        Text: English
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        PageCount: 29
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      – SubjectFull: Iridium
        Type: general
      – SubjectFull: Transition metal oxides
        Type: general
      – SubjectFull: Water electrolysis
        Type: general
      – SubjectFull: Oxygen evolution reactions
        Type: general
      – SubjectFull: Durability
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      – SubjectFull: Catalytic activity
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      – SubjectFull: Electrocatalysts
        Type: general
      – SubjectFull: Hydrogen production
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      – TitleFull: Challenges and Opportunities for the Emerging Iridium Center on Transition Metal Oxide for PEM Water Electrolysis.
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            NameFull: Zhang, Bingjie
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            NameFull: Yang, Fulin
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            NameFull: Sengeni, Anantharaj
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            NameFull: Feng, Ligang
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            – D: 22
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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            – TitleFull: Advanced Energy Materials
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