Importing Atomic Rare‐Earth Sites to Activate Lattice Oxygen of Spinel Oxides for Electrocatalytic Oxygen Evolution

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Окт. 9, 2024

Abstract Spinel oxides have emerged as highly active catalysts for the oxygen evolution reaction (OER). Owing to covalency competition, OER process on spinel often follows an arduous adsorbate mechanism (AEM) pathway. Herein, we propose a novel rare‐earth sites substitution strategy tune lattice redox of and bypass AEM scaling relationship limitation. Taking NiCo 2 O 4 model, incorporation Ce into octahedral site induces formation Ce−O−M (M=Ni, Co) bridge, which triggers charge redistribution within . The developed Ce−NiCo exhibits remarkable activity with low overpotential, satisfactory electrochemical stability, good practicability in anion‐exchange membrane water electrolyzer. Theoretical analyses reveal that surface more favorable (LOM) pathway non‐concerted proton‐electron transfers compared pure , also verified by pH‐dependent behavior situ Raman analysis. 18 O‐labeled mass spectrometry provides direct evidence released during originates from We discover electron delocalization f states through favoring antibonding state occupation Ni−O bonding [Ce−O−Ni] unit site, thereby activating OER. This work new perspective designing offers significant insights rare‐earth‐enhanced LOM mechanism.

Язык: Английский

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Advances in Oxygen Evolution Reaction Electrocatalysts via Direct Oxygen–Oxygen Radical Coupling Pathway

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

Abstract Oxygen evolution reaction (OER) is a cornerstone of various electrochemical energy conversion and storage systems, including water splitting, CO 2 /N reduction, reversible fuel cells, rechargeable metal‐air batteries. OER typically proceeds through three primary mechanisms: adsorbate mechanism (AEM), lattice oxygen oxidation (LOM), oxide path (OPM). Unlike AEM LOM, the OPM via direct oxygen–oxygen radical coupling that can bypass linear scaling relationships intermediates in avoid catalyst structural collapse thereby enabling enhanced catalytic activity stability. Despite its unique advantage, electrocatalysts drive remain nascent are increasingly recognized as critical. This review discusses recent advances OPM‐based electrocatalysts. It starts by analyzing mechanisms guide design Then, several types novel materials, atomic ensembles, metal oxides, perovskite molecular complexes, highlighted. Afterward, operando characterization techniques used to monitor dynamic active sites examined. The concludes discussing research directions advance toward practical applications.

Язык: Английский

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Efficient electrocatalytic oxygen evolution enabled by porous Eu-Ni(PO3)2 nanosheet arrays

Journal of Rare Earths, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 1, 2024

Язык: Английский

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Synergistic geometric and electronic optimized Mo@Mo-Bo electrocatalyst for enhanced oxygen evolution reaction and value-added electrolysis

Sustainable Energy & Fuels, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Metal borates have long-lasting uses due their high electrical conductivity and stability.

Язык: Английский

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Comprehensive Insight Into Electronic Modulation of Rare‐Earth Elements for Enhancing Electrocatalytic Performance of Atomically Dispersed Materials

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Abstract Atomically dispersed materials have been a thriving research field due to their maximum atomic utilization and remarkable performance in energy conversion storage systems. Owing the large radius, strong oxophilicity, unique electronic properties, rare‐earth (RE) elements widely investigated as oxide carriers promoters atomically manipulate regulate structure of active species. Single‐atom state with an adjustable coordination environment on N‐doped carbon endows RE metals special states outstanding catalytic performances. A thorough comprehension modulation mechanism paves way for construction advanced RE‐based electrocatalysts high activity, stability, selectivity. This review provides widespread insight into roles modulating properties combined structure–performance relationship electrocatalysis processes. The characteristic physical chemical are highlighted, synthetic strategy is discussed. Finally, summary perspectives rational design development highly efficient catalysts proposed. aims provide guideline promoting effective functional materials.

Язык: Английский

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Zeolitic Imidazolate Framework-Derived Bifunctional CoO-Mn3O4 Heterostructure Cathode Enhancing Oxygen Reduction/Evolution via Dynamic O-Vacancy Formation and Healing for High-Performance Zn-Air Batteries

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104040 - 104040

Опубликована: Янв. 1, 2025

Язык: Английский

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Catalyst‐Anchored 3D Framework Electrodes: A Breakthrough in Large‐Scale Hydrogen Production

Particle & Particle Systems Characterization, Год журнала: 2025, Номер unknown

Опубликована: Янв. 20, 2025

Abstract The idea of grid‐scale hydrogen production by water electrolysis has been made possible developing catalyst‐anchored three‐dimensional (3D) foam‐based electrodes. Catalytic performance in and oxygen evolution reactions is improved incorporating catalyst 3D interlinked porous architecture, which enhances electrical conductivity speeds up the discharge gas bubbles. detailed study on role‐play frameworks energy generation explained this article. review also focuses recent development utilizing these substrates field electrochemistry. Furthermore, it imperative to enhance their compatibility with renewable systems high‐temperature for sustainable hydrogen. Therefore, briefly explores innovative design self‐supported framework electrodes using heterostructures doping techniques develop stable, durable, efficient electrocatalysts. These catalysts aim provide near‐zero overpotential, high selectivity, long‐term stability through electrolysis, paving way commercial‐scale green production. can emerge as a key technology

Язык: Английский

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Mn-mediated efficient oxygen evolution reaction on phosphorized NiFe electrocatalyst

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159975 - 159975

Опубликована: Янв. 1, 2025

Язык: Английский

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Electrochemical Synthesis of High-Efficiency Water Electrolysis Catalysts

Electrochemical Energy Reviews, Год журнала: 2025, Номер 8(1)

Опубликована: Фев. 6, 2025

Язык: Английский

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Sight into a Rare-Earth-Based Catalyst with Spatial Confinement Effect from the Perspective of Electronic Structure

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Rare-earth elements include 15 kinds of lanthanides as well Sc and Y elements. Interestingly, the special electronic configuration a lanthanide rare earth is [Xe]4fn5d0–16s2 (n = 0–14), which results in rare-earth materials' unique activity such areas thermal catalysis, electrocatalysis, photocatalysis, etc. It worth noting that class materials with spatial confinement effects are playing an increasingly important role catalytic performance; especially, construction hollow multishelled structures (HoMSs) can further enhance materials. In this review, we discuss depth roles 4f5d structure. Subsequently, review systematically summarizes synthesis methods HoMSs their research progress field catalysis specifically introduces advanced characterization analysis HoMSs. Finally, directions, application prospects, challenges need to be focused on future rare-earth-based discussed anticipated. We believe will not only inspire more creativity optimizing local structure design catalysts but also provide valuable insights for designing other types catalysts.

Язык: Английский

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