Durable Acidic Oxygen Evolution Via Self-Construction of Iridium Oxide/Iridium-Tantalum Oxide Bi-Layer Nanostructure with Dynamic Replenishment of Active Sites

Durable Acidic Oxygen Evolution Via Self-Construction of Iridium Oxide/Iridium-Tantalum Oxide Bi-Layer Nanostructure with Dynamic Replenishment of Active Sites

Highlights A self-constructed catalyst with in situ formed IrO2/IrTaO x bi-layer nanostructure was fabricated for high-efficiency acidic oxygen evolution reaction by using an Ir–Ta-based metallic glass as the matrix. The coordinated nature of the catalyst’s active site is manipulated through electro...

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Bibliographic Details
Main Authors: Qi Guo, Rui Li, Yanan Zhang, Qiqin Zhang, Yi He, Zhibin Li, Weihong Liu, Xiongjun Liu, Zhaoping Lu
Format: Article
Language:English
Published: SpringerOpen 2025-02-01
Series:Nano-Micro Letters
Subjects:
Self-construction
Nanoporous
Electronic interaction
Replenishment
Proton exchange membrane (PEM) water electrolysis
Online Access:https://doi.org/10.1007/s40820-025-01680-w
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Summary:Highlights A self-constructed catalyst with in situ formed IrO2/IrTaO x bi-layer nanostructure was fabricated for high-efficiency acidic oxygen evolution reaction by using an Ir–Ta-based metallic glass as the matrix. The coordinated nature of the catalyst’s active site is manipulated through electronic interaction between Ir and Ta, resulting in superior activity and stability. The underlying amorphous IrTaO x layer dynamically replenishes the depletion of surface Ir sites through inward crystallization and selective dissolution to ensure long-term durability.
ISSN:2311-6706
2150-5551

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