High-Current Density Alkaline Water/Seawater Splitting by Mo and Fe co-doped Ni3S2：Invariant Active Sites with Accelerated Water Dissociation Kinetics

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 361, С. 124698 - 124698

Опубликована: Окт. 16, 2024

Язык: Английский

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Novel amorphous FeOOH-modified Co9S8 nanosheets with enhanced catalytic activity in oxygen evolution reaction

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 669, С. 965 - 974

Опубликована: Май 8, 2024

Язык: Английский

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Achievements and challenges in cobalt-based catalysts for water electrolysis

Chemical Engineering Journal, Год журнала: 2024, Номер 500, С. 157080 - 157080

Опубликована: Окт. 28, 2024

Язык: Английский

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Lanthanides in the water electrolysis

EcoMat, Год журнала: 2024, Номер unknown

Опубликована: Сен. 12, 2024

Abstract 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 both anodes and cathodes. Peoples have attempted several strategies to improve electrocatalytic activity their original structure. One such involves introducing rare earth metals or creating heterostructures with based metals. incorporation significantly enhances by many folds, while offer structural stability ability manipulate electronic properties system. These factors led a boom in investigations metal‐based electrocatalysts. There currently pressing demand review article that can provide comprehensive overview scientific advancements elucidate mechanistic aspects impact lanthanide doping. This begins explaining structure lanthanides. We next examine aspects, followed doping heterostructure formation electrolysis applications. It expected this particular effort will benefit broad audience stimulate more research area interest. image

Язык: Английский

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Engineering surface sulfur vacancies of cobalt-doped nickel sulfide arrays induced by Ar plasma treatment to promote oxygen evolution reaction

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 102, С. 1084 - 1092

Опубликована: Янв. 14, 2025

Язык: Английский

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Recent Advances in Transition Metal Chalcogenides Electrocatalysts for Oxygen Evolution Reaction in Water Splitting

Catalysts, Год журнала: 2025, Номер 15(2), С. 124 - 124

Опубликована: Янв. 27, 2025

Rapid industrial growth has overexploited fossil fuels, making hydrogen energy a crucial research area for its high and zero carbon emissions. Water electrolysis is promising method as it greenhouse gas-free energy-efficient. However, OER, slow multi-electron transfer process, the limiting step. Thus, developing efficient, low-cost, abundant electrocatalysts vital large-scale water electrolysis. In this paper, application progress of transition metal chalcogenides (TMCs) catalysts oxygen evolution reaction in recent years are comprehensively reviewed. The key findings highlight catalytic mechanism performance TMCs synthesized using single or multiple metals. Notably, modifications through recombination, heterogeneous interface engineering, vacancy, atom doping found to effectively regulate electronic structure chalcogenides, increasing number active centers reducing adsorption intermediates barriers OER. paper further discusses shortcomings challenges OER catalysts, including low electrical conductivity, limited sites, insufficient stability under harsh conditions. Finally, potential directions new TMC with enhanced efficiency proposed.

Язык: Английский

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Optimization of 3D Metal‐Based Assemblies for Efficient Electrocatalysis: Structural and Mechanistic Studies

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

Abstract The commercial utilization of low‐dimensional catalysts has been hindered by their propensity for agglomeration and stacking, greatly minimizing active sites. To circumvent this problem, materials can be assembled into systematic 3D architectures to synergistically retain the benefits constituent nanomaterials, with value‐added bulk properties such as increased surface area, improved charge transport pathways, enhanced mass transfer, leading higher catalytic activity durability compared constituents. hierarchical organization building blocks within structures also enables precise control over catalyst's morphology, composition, chemistry, facilitating tailored design specific electrochemical applications. Despite surge in metal‐based assemblies, there are no reviews encompassing different types assemblies from nanomaterials electrocatalysis. Herein, review addresses gap investigating various self‐supported exploring how electrocatalytic performance elevated through structural modifications mechanistic studies tailor them reactions.

Язык: Английский

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Enhancing Oxygen Evolution Electrocatalysis in Heazlewoodite: Unveiling the Critical Role of Entropy Levels and Surface Reconstruction

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

Abstract Entropy engineering has proven effective in enhancing catalyst electrochemical properties, particularly for the oxygen evolution reaction (OER). Challenges persist, however, modulating entropy and understanding dynamic reconfiguration of high‐entropy sulfides during OER. In this study, an innovative situ corrosion method is introduced to convert low‐valent nickel on a foam substrate into heazlewoodite (HES/NF), significantly boosting OER performance. By synthesizing series low‐, medium‐, heazlewoodites, intrinsic factors influence surface electrocatalytic activity systematically explored. Employing combination ex characterization techniques, it observed that HES/NF dynamically transforms stable hydroxide oxide (MOOH)‐sulfide composite under conditions. This transition, coupled with lattice distortion, optimizes electrostatic potential distribution, ensuring superior catalytic preventing sulfide deactivation through formation HES‐MOOH species. synergy enables achieve remarkably low overpotentials: 172.0 mV at 100.0 mA cm −2 229.0 extreme current density 300.0 . When paired Pt/C cathode, exhibits rapid kinetics, outstanding stability, exceptional water‐splitting The scalable, cost‐effective approach paves way advanced electrocatalyst design, promising breakthroughs energy storage conversion technologies.

Язык: Английский

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D-band center modulation of atomic dispersed FeNx sites by incorporating Co9S8 nanoparticles towards agumented ORR/OER electrocatalysis in Zn-air batteries

Materials Today Physics, Год журнала: 2025, Номер unknown, С. 101728 - 101728

Опубликована: Апрель 1, 2025

Язык: Английский

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Innovative Air Cathode with Ni‐Doped Cobalt Sulfide in Highly Ordered Macroporous Carbon Matrix for Rechargeable Zn–Air Battery

Advanced Science, Год журнала: 2024, Номер unknown

Опубликована: Окт. 14, 2024

Abstract To realize the practical application of rechargeable Zn–Air batteries (ZABs), it is imperative to develop a non‐noble metal‐based electrocatalyst with high electrochemical performance for oxygen reduction reaction (ORR) and evolution (OER). Herein, Ni‐doped Co 9 S 8 nanoparticles dispersed on an inverse opal‐structured N, co‐doped carbon matrix (IO─Ni x 9‐x @NSC) as bifunctional presented. The unique 3D porous structure, arranged in opal pattern, provides large active surface area. Also, conductive substrate ensures homogeneous dispersion Ni nanocrystals, preventing aggregation increasing exposure sites. introduction heteroatom dopants into structure generates defect sites enhances polarity, thereby improving electrocatalytic alkaline solutions. Consequently, IO─Ni @NSC shows excellent activity half‐wave potential 0.926 V ORR low overpotential 289 mV at 10 mA cm −2 OER. Moreover, ZAB assembled prepared exhibits higher specific capacity (768 mAh g Zn −1 ), peak power density (180.2 mW outstanding stability (over 160 h) compared precious electrocatalyst.

Язык: Английский

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