Unlocking high-performance hydrogen evolution: Argon-induced Ni segregation in NiO/TiO2 of core/shell catalysts

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 86, С. 1010 - 1019

Опубликована: Сен. 4, 2024

Язык: Английский

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Self-supporting high-performance nickel-cobalt phosphides as bifunctional catalysts for efficient overall water and seawater splitting

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 105, С. 638 - 645

Опубликована: Янв. 25, 2025

Язык: Английский

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NiP cathode catalyst for alkaline water electrolyser

International Journal of Hydrogen Energy, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Bimetallic Ni–Co-MOF Nanostructures for Seawater Electrolysis: Unveiling the Mechanism of the Oxygen Evolution Reaction Using Impedance Spectroscopy

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Designing anode electrodes with long-term stability and efficiency for seawater electrolysis is crucial addressing key challenges in sustainable hydrogen production clean energy systems. Here, we developed self-supporting bimetallic Ni–Co-MOF electrodes, demonstrating exceptional performance durability alkaline due to their high voltammetric charge density increased electrochemically accessible active sites. The reaction kinetics of the water oxidation presence Cl– ions (at concentrations ranging from 0.5 M 3.5 M) were investigated through electrochemical impedance spectroscopy (EIS) analysis, focusing on kinetic parameters, suggesting that rate-determining step (RDS) chemical process following initial electron transfer. Notably, electrolyte medium do not alter OER rate-limiting step, as indicated by negligible variations anodic transfer coefficient values. However, blocking sites evident decrease interfacial capacitance (Cchem) values increasing concentration. These findings offer a deeper understanding chloride-containing environments correlating parameters site availability. This work highlights critical considerations designing efficient durable anodes electrolysis.

Язык: Английский

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Durable Hierarchical Porous PtCo Nanoparticle Films for Hydrogen Evolution Reaction in Simulated Seawater

ACS Applied Nano Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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Rational design of Mo-doped NixSy/Ni2P heterostructure on nickel foam for high-efficiency hydrogen evolution in alkaline freshwater and seawater media

Journal of Materials Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 15, 2025

Язык: Английский

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Boosting Bifunctional Electrocatalysis: Glycine-Assisted NiMnO₃ with Optimized Calcination Temperatures for Sustainable Water Splitting

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180644 - 180644

Опубликована: Апрель 1, 2025

Язык: Английский

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Bimetallic Ni–Mn Electrocatalysts for Stable Oxygen Evolution Reaction in Simulated/Alkaline Seawater and Overall Performance in the Splitting of Alkaline Seawater

Coatings, Год журнала: 2024, Номер 14(8), С. 1074 - 1074

Опубликована: Авг. 22, 2024

The perfect strategy for the generation of green and renewable hydrogen (H2) fuels is direct electrocatalytic splitting plentiful seawater rather than scarce freshwater. One half-reactions taking place during oxygen evolution (OER). However, OER affected by slow four-electron transfer kinetics as well competitive chlorine reactions (CERs) in seawater. To overcome kinematic barriers achieve an excellent overall performance splitting, we herein report a facile, low-cost, one-step fabrication procedure 3D structured nickel–manganese (NiMn) coatings using dynamic bubble template (DHBT) technique. activities thus synthesized catalytic materials simulated (0.5 M NaCl + 1 KOH, denoted SSW) alkaline natural (natural ASW) were investigated linear sweep voltammetry (LSV) at varying temperatures from 25 to 75 °C. Scanning electron microscopy (SEM) inductively coupled plasma–optical emission spectroscopy (ICP–OES) used examine surface morphology composition prepared catalysts. It was found that NiMn/Ti-1 catalyst plating bath containing molar ratio 1:1 Ni2+:Mn2+ having lowest Mn loading 13.43 µg cm−2 exhibited quite reasonable activity Cl− ion rich SSW ASW. benchmark current density 10 mA ASW, electrocatalyst requires overpotentials 386 388 mV, respectively. In addition, this optimal bimetallic also demonstrated superior long-run stability 1.81 V (vs. RHE) 24 h both working electrolytes. Impressively, two-electrode electrolyzer—NiMn/Ti-5(−)||NiMn/Ti-1(+)—needs only 1.619 deliver electrolysis, which even 0.075 lower noble metal-based electrolyzer (Pt(−)||NiMn/Ti-1(+)).

Язык: Английский

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In situ construction of W-doped Co-P electrocatalyst by electrodeposition for boosting alkaline water/seawater hydrogen evolution reaction

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 89, С. 1430 - 1439

Опубликована: Окт. 7, 2024

Язык: Английский

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Electrocatalyst Design for Hydrogen Evolution Reaction

SpringerBriefs in energy, Год журнала: 2024, Номер unknown, С. 21 - 39

Опубликована: Янв. 1, 2024

Язык: Английский

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