Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 683, P. 694 - 702
Published: Dec. 17, 2024
Language: Английский
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155736 - 155736
Published: Sept. 12, 2024
Language: Английский
Citations
9
Journal of Materials Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 14, 2025
Language: Английский
Citations
1
Small, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 29, 2025
Abstract The hydrogen spillover phenomenon provides an expeditious reaction pathway via transfer from a strong H adsorption site to weak site, enabling cost‐efficient evolution (HER) analogous platinum with moderate energy. Here, high‐entropy oxychalcogenide (HEOC) comprising Co, Ni, Mo, W, O, Se, and Te is prepared by two‐step electrochemical deposition for spillover‐enhanced HER in acidic alkaline water electrolysis. anodic–cathodic reversal current enables the co‐deposition of cations aliovalent anions, facilitating glass structure multiple active sites spillover. HEOC exhibits low overpotentials 52 57 mV obtain density 10 mA cm −2 media, respectively, long‐term stability 500 h. analytical approaches elucidate toward Mo/W−O both acid HERs. Meanwhile, other act as or dissociation‐derived hydroxide sites, showing accommodable behavior media. practically high 1 A at cell voltages 1.78 1.89 V 100 h proton anion exchange membrane electrolyzers, respectively.
Language: Английский
Citations
1
Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)
Published: March 13, 2025
Abstract The state-of-the-art anion-exchange membrane water electrolyzers (AEMWEs) require highly stable electrodes for prolonged operation. stability of the electrode is closely linked to effective evacuation H 2 or O gas generated from surface during electrolysis. In this study, we prepared a super-hydrophilic by depositing porous nickel–iron nanoparticles on annealed TiO nanotubes (NiFe/ATNT) rapid outgassing such nonpolar gases. NiFe/ATNT exhibited an overpotential 235 mV at 10 mA cm −2 oxygen evolution reaction in 1.0 M KOH solution, and was utilized as anode AEMWE achieve current density 1.67 A 1.80 V. addition, with electrode, which enables outgassing, showed record 1500 h 0.50 under harsh temperature conditions 80 ± 3 °C.
Language: Английский
Citations
1
ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 8, 2025
A key challenge in the field of hydrogen evolution reaction (HER) is to develop catalysts that not only perform well pure alkaline conditions but also maintain high efficiency simulated seawater, which poses additional complexities due presence salts. This study introduces Nd-doped MoS2 nanosheets on carbon cloth (Mo1–xNdxS2⊥CC) as a high-performance electrocatalyst tailored for HER both saltwater and water. The optimized catalyst demonstrates an exceptional overpotential 112 mV at current density 10 mA/cm2, significantly lower than 235 exhibited by pristine under same conditions. Density functional theory (DFT) calculations experimental data indicate Nd doping enhances catalytic performance creating oxophilic sites improve water adsorption dissociation, modulating electronic structure accelerate Volmer Heyrovsky kinetics. Additionally, sulfur vacancy (Sv) further strengthens interaction between S, enhancing activation lowering dissociation barrier. maintains over 95% its initial activity after 48 h operation underscoring excellent stability effectiveness. These advancements design address pressing need robust variable electrolytes underscore broader applicability metal-doped other transition metals like Ru, Mn, Fe, potentially across diverse operational environments.
Language: Английский
Citations
0
Ionics, Journal Year: 2025, Volume and Issue: 31(3), P. 2757 - 2769
Published: Feb. 4, 2025
Language: Английский
Citations
0
Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178967 - 178967
Published: Feb. 1, 2025
Language: Английский
Citations
0
Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: April 16, 2025
Transition metal-based electrocatalysts are active materials for the oxygen evolution reaction (OER). However, their activities depend heavily on in situ reconstructed new catalytic layer, which severely curtails rational design and screening of well-defined during synthesis stage. Here, we present a method to deliberately catalyst layer by adding small amount Fe3+ ions electrolyte. We investigated effect reconstruction process NiCuOxHy subsequent contribution activity. The presence promotes formation with fewer vacancies. This structural feature allows fast charge active-species transfer near layer. Moreover, Fe3+-ion-regulated has suitable electronic configuration intermediate adsorption, thus reducing kinetics. With assistance trace ions, an increase current density up 54.2% can be achieved. electrolyte concentration saved 50% (0.5 M) while maintaining 150 mA cm-2. work provides insights into ion-catalyst correlation surface offers guidance efficient OER electrocatalysts.
Language: Английский
Citations
0
International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 130, P. 54 - 63
Published: April 24, 2025
Language: Английский
Citations
0
International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 130, P. 373 - 380
Published: April 27, 2025
Language: Английский
Citations
0