Oxygen Evolution Reaction in Energy Conversion and Storage: Design Strategies Under and Beyond the Energy Scaling Relationship

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 14(1)

Published: April 28, 2022

The oxygen evolution reaction (OER) is the essential module in energy conversion and storage devices such as electrolyzer, rechargeable metal-air batteries regenerative fuel cells. adsorption scaling relations between intermediates, however, impose a large intrinsic overpotential sluggish kinetics on OER catalysts. Developing advanced electrocatalysts with high activity stability based non-noble metal materials still grand challenge. Central to rational design of novel high-efficiency catalysts development understanding quantitative structure-activity relationships, which correlate catalytic activities structural electronic descriptors. This paper comprehensively reviews benchmark descriptors for electrolysis, aiming give an in-depth origins electrocatalytic further contribute building theory electrocatalysis. Meanwhile, cutting-edge research frontiers proposing new paradigms crucial strategies circumvent relationship are also summarized. Challenges, opportunities perspectives discussed, intending shed some light concepts advance more efficient enhancing performance.

Language: Английский

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Ferromagnetic single-atom spin catalyst for boosting water splitting

Nature Nanotechnology, Journal Year: 2023, Volume and Issue: 18(7), P. 763 - 771

Published: May 25, 2023

Language: Английский

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Recent progress on design and applications of transition metal chalcogenide-associated electrocatalysts for the overall water splitting

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2022, Volume and Issue: 44, P. 7 - 49

Published: Dec. 2, 2022

Language: Английский

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Physical upcycling of spent artificial diamond accelerant into bifunctional oxygen electrocatalyst with dual-metal active sites for durable rechargeable Zn–air batteries

Nano Energy, Journal Year: 2024, Volume and Issue: 121, P. 109270 - 109270

Published: Jan. 9, 2024

Language: Английский

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Enhancement of electrocatalysis through magnetic field effects on mass transport

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 3, 2024

Abstract Magnetic field effects on electrocatalysis have recently gained attention due to the substantial enhancement of oxygen evolution reaction (OER) ferromagnetic catalysts. When detecting an enhanced catalytic activity, effect magnetic fields mass transport must be assessed. In this study, we employ a specifically designed magneto-electrochemical system and non-magnetic electrodes quantify effects. Our findings reveal marginal in reactions with high reactant availability, such as OER, whereas boosts exceeding 50% are observed diffusion limited reactions, exemplified by reduction (ORR). Direct visualization quantification whirling motion ions under underscore importance Lorentz forces acting electrolyte ions, demonstrate that bubbles’ movement is secondary phenomenon. results advance fundamental understanding unveil new prospects for developing more efficient sustainable energy conversion technologies.

Language: Английский

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Regulating the Spin Polarization of NiFe Layered Double Hydroxide for the Enhanced Oxygen Evolution Reaction

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(5), P. 3640 - 3646

Published: Feb. 21, 2024

The oxygen evolution reaction (OER) is an electrochemical process that involves the spin-dependent conversion of singlet OH–/H2O to triplet O2. However, sluggish dynamics associated with this severely limits its efficiency in water splitting. Fortunately, utilization a magnetic field can significantly enhance spin selectivity and accelerate kinetics. Herein, we report unique strategy regulate polarization NiFe layered double hydroxide (NiFe-LDH) by harnessing internal induced built-in core. exchange bias effect between core NiFe-LDH selectively remove electrons opposite moments, thereby reducing magnetoresistances minimizing scattering during electron transport. Benefiting from effect, obtained catalyst exhibits excellent OER performance low overpotential 196 mV at current density 30 mA cm–2. Furthermore, functional theory (DFT) calculations further confirm increase hybrid strength Fe-3d O-2p orbitals while decreasing adsorption energy reactant intermediates, thus accelerating generation paramagnetic oxygen.

Language: Английский

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Magnetic Field‐Assisted Water Splitting: Mechanism, Optimization Strategies, and Future Perspectives

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(26)

Published: Feb. 15, 2024

Abstract Rationally designing of highly efficient electrocatalysts is critical to improving hydrogen production by water electrolysis. However, bottlenecks still require consideration when optimizing the intrinsic performance electrocatalysts. Applying appropriate external fields catalytic systems may effectively overcome such and enhance catalysts. Among various fields, magnetic field has received extensive attention owing its multifunctionality, non‐contact nature, non‐invasiveness, thereby requiring more research development. In this review, recent advances in field‐assisted electrolysis are systematically outlined. Firstly, diverse methods used for pre‐regulating catalysts under including optimized nucleation, induction heating, directed growth, discussed. It then explores effects on electrochemical processes, magnetothermal, magnetohydrodynamic, induced electric impact. Then, influences properties catalysts, as spin polarization reconstruction effects, addressed. Finally, a discussion potential perspectives field‐enhanced splitting, catalyst design, experimental precision, situ characterization, provided guide further research.

Language: Английский

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Enhancing Electrocatalytic Activity Through Targeted Local Electrolyte Micro‐Environment

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

Published: Jan. 10, 2025

Abstract The local electrolyte micro‐environment surrounding the catalyst reaction center, including critical factors such as pH, reactant concentration, and electric field, plays a decisive role in electrocatalytic reactions water splitting. Recently, this topic has garnered significant attention due to its potential significantly enhance catalytic performance. While various strategies optimize processes have been explored, deliberate control over fundamental principles guiding these adjustments remain their early stages of development. This review provides comprehensive examination key efforts aimed at designing tailoring localized micro‐environments improve It discusses advances micro‐environmental design, methodologies for evaluating shifts, mechanistic insights driving developments. Additionally, highlights existing challenges prospective industrial applications strategies. By offering detailed analysis recent developments, aims equip researchers with practical knowledge on controlling micro‐environments, thereby accelerating progress toward real‐world processes.

Language: Английский

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Insights into Operating Conditions on Electrocatalytic CO₂ Reduction

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

Published: Feb. 5, 2025

Abstract Electrocatalytic CO 2 reduction (CO RR) is rapidly emerging as a promising sustainable strategy for transforming into valuable fuels and chemical feedstocks, crucial step toward carbon‐neutral society. The efficiency, selectivity, stability of RR are heavily influenced by the chosen catalyst operating conditions used. Despite substantial advances in development catalysts, there scarcity comprehensive reviews focusing on influence different environments performance. This review offers detailed examination internal external environmental control strategies designed to enhance efficiency. fundamental reaction mechanisms through situ operational techniques, paired with theoretical analyses, discussed while also identifying key challenges future research directions technology. By delivering overview current state field, this highlights critical role control, mechanistic insights, practical considerations needed successful commercialization

Language: Английский

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Magnetic Field Enhanced Electrocatalytic Oxygen Evolution of NiFe‐LDH/Co₃O₄ p‐n Heterojunction Supported on Nickel Foam

Small Methods, Journal Year: 2022, Volume and Issue: 6(6)

Published: April 23, 2022

Here, a strategy to regulate the electron density distribution by integrating NiFe layered double hydroxides (NiFe-LDH) nanosheets with Co3 O4 nanowires construct NiFe-LDH/Co3 p-n heterojunction supported on nickel foam (NiFe-LDH/Co3 /NF) for electrocatalytic oxygen evolution reaction (OER) is proposed. The can induce charge redistribution in heterogeneous interface reach Fermi level alignment, thus modifying adsorption free energy of *OOH and improving intrinsic activity catalyst. As result, /NF exhibits outstanding OER performance low overpotential 274 mV at current 50 mA cm-2 long-time stability over 90 h. Moreover, NF serve as magnetic core that induces exchange bias effect between substrate active species under action field, resulting decreased magnetoresistance weakened scattering spin electrons, which further lowers 25 @ 10 000 G field. This work provides new perspective design catalysts deeper understanding field-enhanced reactions.

Language: Английский

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