Tuning the high-entropy perovskite as efficient and reliable electrocatalysts for oxygen evolution reaction

Wei, Ruixue; Fu, Gaoliang; Qi, Huafeng; Liu, Hewei

doi:10.1039/d4ra02680b

RSC Adv.

2024

DOI: 10.1039/d4ra02680b

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Tuning the high-entropy perovskite as efficient and reliable electrocatalysts for oxygen evolution reaction

Ruixue Wei,

Gaoliang Fu,

Huafeng Qi

et al.

Abstract: This work reports a high-entropy perovskite La0.3Sr0.7(CrMnFeCoNi)0.2O3 as a high-performance OER electrocatalyst. Sr doping induces the formation of higher-valence Cr6+, Mn4+, Fe4+, Co4+ and Ni3+ responsible for the excellent OER activity.

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Cited by 2 publications

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Recent Advances in Perovskite Oxides for Oxygen Evolution Reaction: Structures, Mechanisms, and Strategies for Performance Enhancement

Sun,

Yuan,

Liu

et al. 2024

Adv Funct Materials

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Perovskite‐type oxides are widely employed as oxygen evolution reaction (OER) electrocatalysts due to their tunable composition, diverse structure, abundant natural reserves, remarkable stability, and low cost. The intrinsic OER electrocatalytic activity of these perovskite oxides is generally enhanced by improving conductivity, increasing specific surface area, and optimizing the adsorption of oxygen‐containing intermediates. This is achieved through rationally designed strategies, including compositional engineering, defect engineering, hybridization, and surface regulation. In this review, recent advances in perovskite oxides for OER are summarized, with a focus on exploring structure‐performance relationships. This review provides a brief introduction to the application of perovskite oxides in OER, followed by the classification and characteristics of these perovskite oxides. The primary OER catalytic mechanisms, and well‐established activity descriptors are discussed. The key strategies are concentrated for enhancing OER activity, including composition engineering, defect engineering, hybridization, and surface reconstruction. Finally, the challenges and opportunities in developing high‐performance perovskite oxides as OER electrocatalysts are presented.

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Recent Advances in Perovskite Oxides for Oxygen Evolution Reaction: Structures, Mechanisms, and Strategies for Performance Enhancement

Sun,

Yuan,

Liu

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

Lanthanides in the water electrolysis

Gaur,

Sharma,

Enkhbayar

et al. 2024

EcoMat

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The most feasible technique for producing green hydrogen is water electrolysis. In recent years, there has been significant study conducted on the use of transition metal compounds as electrocatalysts for both anodes and cathodes. Peoples have attempted several strategies to improve the electrocatalytic activity of their original structure. One such technique involves introducing rare earth metals or creating heterostructures with compounds based on rare earth metals. The incorporation of rare earth metals significantly enhances the activity by many folds, while their compounds offer structural stability and the ability to manipulate the electronic properties of the original system. These factors have led to a recent boom in investigations on rare earth metal‐based electrocatalysts. There is currently a pressing demand for a review article that can provide a comprehensive overview of the scientific advancements and elucidate the mechanistic aspects of the impact of lanthanide doping. This review begins by explaining the electronic structure of the lanthanides. We next examine the mechanistic aspects, followed by recent advancements in lanthanide doping and heterostructure formation for water electrolysis applications. It is expected that this particular effort will benefit a broad audience and stimulate more research in this area of interest.image

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Tuning the high-entropy perovskite as efficient and reliable electrocatalysts for oxygen evolution reaction

Abstract: This work reports a high-entropy perovskite La0.3Sr0.7(CrMnFeCoNi)0.2O3 as a high-performance OER electrocatalyst. Sr doping induces the formation of higher-valence Cr6+, Mn4+, Fe4+, Co4+ and Ni3+ responsible for the excellent OER activity.

Cited by 2 publications

References 52 publications

Recent Advances in Perovskite Oxides for Oxygen Evolution Reaction: Structures, Mechanisms, and Strategies for Performance Enhancement

Recent Advances in Perovskite Oxides for Oxygen Evolution Reaction: Structures, Mechanisms, and Strategies for Performance Enhancement

Lanthanides in the water electrolysis

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