Dual Doping in Precious Metal Oxides: Accelerating Acidic Oxygen Evolution Reaction

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(4), P. 1582 - 1582

Published: Feb. 13, 2025

Developing a highly active and stable catalyst for acidic oxygen evolution reactions (OERs), the key half-reaction proton exchange membrane water electrolysis, has been one of most cutting-edge topics in electrocatalysis. A dual-doping strategy optimizes electronic environment, modifies coordination generates vacancies, introduces strain effects through synergistic effect two elements to achieve high catalytic performance. In this review, we summarize progress dual doping RuO2 or IrO2 OERs. The three main mechanisms OERs are dicussed firstly, followed by detailed examination development history catalysts, from experimentally driven systems machine learning (ML) theoretical screening systems. Lastly, provide summary remaining challenges future prospects, offering valuable insights into

Language: Английский

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Structure–Activity Relationships in Oxygen Electrocatalysis

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 30, 2024

Abstract Oxygen electrocatalysis, as the pivotal circle of many green energy technologies, sets off a worldwide research boom in full swing, while its large kinetic obstacles require remarkable catalysts to break through. Here, based on summarizing reaction mechanisms and situ characterizations, structure–activity relationships oxygen electrocatalysts are emphatically overviewed, including influence geometric morphology chemical structures electrocatalytic performances. Subsequently, experimental/theoretical is combined with device applications comprehensively summarize cutting‐edge according various material categories. Finally, future challenges forecasted from perspective catalyst development applications, favoring researchers promote industrialization electrocatalysis at an early date.

Language: Английский

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NiFe‐Based Electrocatalysts for Alkaline Oxygen Evolution: Challenges, Strategies, and Advances Toward Industrial‐Scale Deployment

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 2, 2024

Abstract Developing high‐efficiency alkaline water splitting technology holds great promise in potentially revolutionizing the traditional petrochemical industry to a more sustainable hydrogen economy. Importantly, oxygen evolution reaction (OER) accompanied at anode is considered as critical bottleneck terms of both complicated mechanism and sluggish kinetics, requiring rational design OER electrocatalysts elucidate structure‐performance relationship reduce applied overpotential. As benchmarked non‐precious metal candidate, NiFe‐based have gained enormous attention due low‐cost, earth‐abundance, remarkable intrinsic activity, which are expected be implemented industrial splitting. In this contribution, comprehensive overview provided, starting with fundamental mechanisms, evaluation metrics, synthetic protocols. Subsequently, basic principles corresponding regulatory strategies summarized following sequence substrate‐catalyst‐electrolyte efficient robust toward industrial‐scale deployment. Perspectives on remaining challenges instructive opportunities booming field finally discussed.

Language: Английский

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Ni etching bimetallic ZIF in-situ construction of NiCo layer double hydroxides to promote oxygen evolution reaction

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162383 - 162383

Published: Jan. 1, 2025

Language: Английский

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Carbothermal Shock Synthesis of Lattice Oxygen-Mediated High-Entropy FeCoNiCuMo-O Electrocatalyst with a Fast Kinetic, High Efficiency, and Stable Oxygen Evolution Reaction

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Efficient oxygen evolution reaction (OER) catalysts with fast kinetics, high efficiency, and stability are essential for scalable green production of hydrogen. The rational design fabrication play a decisive role in their catalytic behavior. This work presents high-entropy catalyst, FeCoNiCuMo-O, synthesized via carbothermal shock. Synergistic optimization the adsorption mechanism (AEM) lattice (LOM) was realized demonstrated through combination situ spectra/mass spectrometry chemical probe analysis FeCoNiCuMo-O. Furthermore, robust is reinforced by inherent properties conferred design. catalyst exhibits outstanding performance metrics, featuring an exceptionally low Tafel slope 41 mV dec–1, overpotential 272 at 10 mA cm–2, commendable endurance (a mere 2.2% voltage decline after 240-h continuous chronopotentiometry test cm–2). study advances development efficient, durable OER electrocatalysts sustainable hydrogen production.

Language: Английский

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Enhanced oxygen evolution reaction through improved lattice oxygen activity via carbon dots incorporation into MOFs

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 361 - 370

Published: Jan. 19, 2025

Language: Английский

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Structural Regulation Strategies of Atomic Cobalt Catalysts for Oxygen Electrocatalysis

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Oxygen electrocatalysis is a core reaction in renewable energy devices, greatly promoting the transformation and upgrading of structure. Nonetheless, performance conversion devices hindered by large overpotential slow kinetics oxygen electrocatalytic reactions. Recently, single‐atom catalysts (SACs) have emerged as promising contenders field because their exceptional metal atom utilization, distinctive coordination environment, adjustable electronic properties. This review presents latest advancements design Co‐based SACs for electrocatalysis. First, OER ORR mechanisms are introduced. Subsequently, strategies regulating structure summarized three aspects, including centers, support carriers. A particular emphasis given to relationship between properties catalysts. Afterward, applications explored. Ultimately, challenges prospects prospected.

Language: Английский

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Fe Dimers Incorporated within Ni(OH)2 Nanosheets to Enable Rapid Oxygen Radical Coupling and Exceptional Durability in Oxygen Evolution

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124861 - 124861

Published: Nov. 1, 2024

Language: Английский

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Bioinspired Oxygen-Evolution Reaction: Achieving Oxygen-Evolution Reaction on Layered Manganese-Oxide Surface with Extremely Low Overpotential

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(21), P. 10081 - 10091

Published: Oct. 24, 2024

Despite the common belief that manganese (hydr)oxides in absence of other metal ions require high overpotential to catalyze oxygen-evolution reaction (OER) alkaline conditions, our study has uncovered surprising results. Layered oxide demonstrates noteworthy OER activity at Mn(III) Mn(IV) oxidation peak following charge accumulation. This is achieved with remarkably low (120 mV) a 1.0 M KOH solution. Initially, Faraday efficiency modest 20%, which can be attributed initial storage. However, as continues (200 s), significantly increases over 80%. We also propose detailed mechanism for this low-overpotential regime, supported by situ visible and Raman spectroscopies surrounding region. By examining amount oxygen generated concentrations redox-active Mn near redox peak, turnover frequency 3.8 × 10–3 s–1 1.35 V was calculated. The reduced observed during complex interplay between process accumulation it nature, these factors collectively enabling notably overpotential. These findings provide significant insights design development highly efficient stable electrocatalysts water-splitting applications, potentially revolutionizing approaches energy conversion Our have implications applications.

Language: 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, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

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