Experimental study on composite oxygen carrier NiFe2O4/Sr4Fe6O13 in chemical looping reforming coupled with thermochemical water splitting

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Amorphous/Crystalline ZrO₂ with Oxygen Vacancies Anchored Nano‐Ru Enhance Reverse Hydrogen Spillover in Alkaline Hydrogen Evolution

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

Published: Jan. 6, 2025

Hydrogen spillover-based binary (HSBB) system has attracted significant attention in alkaline hydrogen evolution reaction (HER). Accelerating spillover the HSBB is crucial for HER activity. Herein, a highly efficient developed by anchoring nano-Ru on oxygen vacancy (Vo) rich amorphous/crystal ZrO

Language: 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, Journal Year: 2025, Volume and Issue: 102, P. 1084 - 1092

Published: Jan. 14, 2025

Language: Английский

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Induction of Nanoscale Magnetic Ordering in Non‐Ferrous Layered Double Hydroxides: Stabilizing Spintronic Electrocatalysis

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

Published: Jan. 15, 2025

Abstract Inducing magnetic ordering in a non‐ferrous layered double hydroxides (LDHs) instigates higher spin polarization, which leads to enhanced efficiency during oxygen evolution reaction (OER). In nano‐sized materials, the concept of elongated grains drives domain alignment under application an external field. Hence, near solid electrode interface, modified magnetohydrodynamics (MHD) positively impacts electrocatalytic ability nanocatalysts. Consequently, significant improvement water‐splitting kinetics can be obtained by using even low fields. At 100 Gauss, 20% and 10% decrement overpotential is reported for OER hydrogen (HER), respectively. Density functional theory (DFT) calculations are also presented explain thermodynamics HER/OER processes. It established that Gibbs energy process reduce exchange barrier dopant like cobalt. The additional cobalt metal active site have highest probability adsorption reactive intermediates HER OER, results efficiencies.

Language: Английский

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Tandem paired electrodes for efficient hydrogen evolution coupled with biomass valorization

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160052 - 160052

Published: Jan. 1, 2025

Language: Английский

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Stabilizing Bulk Lattice Oxygen Via the Enhancement of Ir/Ru–O Bonds for Stable Oxidation Catalysts in Acidic Media

Published: Jan. 1, 2025

Language: Английский

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Enhancing energy efficiency through combined PEMFC and MH systems and advanced exhaust management strategies

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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Design and Synthesis of Self-Supported Water-Splitting Transition Metal-Based Electrocatalysts via Electrospinning

Catalysts, Journal Year: 2025, Volume and Issue: 15(3), P. 205 - 205

Published: Feb. 21, 2025

Recent advances in transition metal-based electrocatalysts have significantly enhanced the hydrogen evolution reaction (HER) and oxygen (OER) water electrocatalysis. Self-supported electrodes, where active sites are directly integrated with substrates, offer superior kinetics stability compared to traditional powder-based electrocatalysts. The electrospinning technique is particularly effective for fabricating self-supported high surface areas, porosity, uniform distribution of sites, leading improved catalytic performance. Despite extensive research on electrocatalysts, a comprehensive review focusing those developed via remains scarce. This provides detailed overview process, fundamental principles electrocatalysis, recent progress development fabricated through this approach.

Language: Английский

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Strain-induced water reorientation for enhanced alkaline hydrogen evolution reaction

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 111, P. 33 - 39

Published: Feb. 24, 2025

Language: Английский

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Scalable Electrocatalytic Urea Wastewater Treatment Coupled with Hydrogen Production by Regulating Adsorption Behavior of Urea Molecule

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Feb. 24, 2025

Abstract Electrocatalytic urea wastewater treatment technology has emerged as a promising method for environmental remediation. However, the realization of highly efficient and scalable electrocatalytic (SEUWT) is still an enormous challenge. Herein, through regulating adsorption behavior functional groups, SEUWT coupled hydrogen production realized in anion exchange membrane water electrolyzer (AEMWE). Density theory calculations indicate that self-driven electron transfer at heterogeneous interface (NiO/Co 3 O 4 ) can induce charge redistribution, resulting electron-rich NiO electron-deficient Co , which are superior to adsorbing C=O (electron-withdrawing group) –NH 2 (electron-donating group), respectively, molecule accelerating reaction kinetics oxidation. This viewpoint further verified by temperature-programmed desorption experiments. The AEMWE assembled with NiO/Co (anode) NiCoP (cathode) continuously treat initial current density 600 mA cm −2 average efficiency about 53%. Compared overall splitting, H rate (8.33 mmol s −1 increases approximately 3.5 times. work provides cost-effective strategy purifying urea-rich energy-saving production.

Language: Английский

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