Etching Accelerates Reconstruction and Activates Lattice Oxygen of Anion Vacancies‐Enriched Cobalt‐Iron Phosphide/(Oxy)Hydroxide Nanohybrid Frameworks for Enhanced Oxygen Evolution DOI

Jiayao Fan,

Jiadong Jiang,

Yingying Wang

et al.

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

Published: April 14, 2025

Abstract Transition metal phosphides (TMPs) nanostructures are considered to be promising pre‐catalysts for electrochemical oxygen evolution reaction (OER). Nonetheless, most TMPs only experience limited surface reconstruction during OER, resulting in fewer active layer, insufficient sites and thus unsatisfactory performance. Thereby, finely control the level is crucial but still challenging. Here, Co 0.7−x Fe 0.3−y P/Co x y OOH nanohybird frameworks with numerous crystalline/amorphous interfaces fabricated by alkali etching of hollow crystalline 0.7 0.3 P nanocubes, leading in‐situ growth amorphous nanosheets subunits. Such nanohybrid own abundant phosphorus vacancies, optimal interface electronic structure, hydrophilic character, which manifest exceptional OER performance overpotential 256 mV reach 10 mA cm −2 current alkaline media, exceeding 1−x OOH, 1−y P/Fe P, IrO 2 , reported unprecious‐metal‐based catalysts. As revealed series ex‐situ spectroscopic analyses, formation anion defects phase promote deep such catalyst, triggering lattice participation synergy adsorbate mechanism toward OER. This work may spur development TMPs‐based catalysts integrating defect, engineering via facile etching, their applications water splitting or other clean energy options.

Language: Английский

Rapid Outgassing of Hydrophilic TiO2 Electrodes Achieves Long-Term Stability of Anion Exchange Membrane Water Electrolyzers DOI Creative Commons
Shajahan Shaik,

Jeonghyeon Kim,

Mrinal Kanti Kabiraz

et al.

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
Tuning the eg* band broadening of the in-situ NiOOH by W doping for efficient biomass electrooxidation DOI

Jinlv Wei,

Jianlong Zhang, Huan Fei Wen

et al.

Chinese Journal of Structural Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 100541 - 100541

Published: Feb. 1, 2025

Language: Английский

Citations

0
The synergistic effect of Ni–NiMo4N5 heterointerface construction and Fe-doping enables active and durable alkaline water splitting at industrial current density DOI
Yaling Zhao, Jinsheng Li, Kai Li

et al.

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The synergistic effect of heterogeneous interfaces and doping optimizes electronic structure accelerates charge transfer, significantly boosting alkaline water electrolysis performance.

Language: Английский

Citations

0
Recent advances in lanthanide-based materials for oxygen evolution reaction: Challenges and future prospects DOI

Sheraz Muhammad,

Lixia Wang,

Zhiyang Huang

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 534, P. 216573 - 216573

Published: March 4, 2025

Language: Английский

Citations

0
Cation (Cr3+, Zn2+, Cu2+ and Mn3+) doping to construct high entropy spinel oxide nanocrystals for modulation of oxygen evolution reaction DOI

Bingxuan Zhai,

Jian Gong,

Leping Liu

et al.

Fuel, Journal Year: 2025, Volume and Issue: 393, P. 134992 - 134992

Published: March 9, 2025

Language: Английский

Citations

0
Bifunctional barium cerate catalyst doped with Fe for enhanced electrochemical stability during oxygen reduction and evolution reactions DOI
P. C. Meléndez-González,

J.F. Méndez-Vázquez,

W. J. Pech-Rodríguez

et al.

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

Published: March 1, 2025

Language: Английский

Citations

0
Enhancing Oxygen Evolution Electrocatalysis in Heazlewoodite: Unveiling the Critical Role of Entropy Levels and Surface Reconstruction DOI Creative Commons

Hangning Liu,

Xinghang Liu, Anbang Sun

et al.

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

Published: April 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.

Language: Английский

Citations

0
Optimizing Electron Delocalization in Cobalt Clusters via d‐d Orbital Coupling for Efficient Bifunctional Oxygen Electrocatalysis DOI
Xin Yu Wang,

Sichen Huo,

Yanjie Chen

et al.

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

Published: April 14, 2025

Abstract Cobalt atom cluster (Co AC )‐based electrocatalysts usually exhibit high activity for oxygen reduction reaction (ORR), but display limited performance in evolution (OER). To enhance their bifunctional catalytic efficiency, it is crucial to tailor the d ‐orbital electronic structure of Co through orbital coupling effect, optimizing chemisorption O‐intermediates. Herein, a 3 ‐4 strategy used construct ‐molybdenum carbide/nanocarbon cake ‐Mo x C/CC) catalyst with hollow ORR/OER zinc‐air batteries (ZABs). Experimental and theoretical results confirm that 4 transition metal Mo, fewer electrons more unfilled orbitals, interacts strongly sites ‐ coupling, promoting electron enrichment triggering delocalization. This process accelerates rate‐limiting steps *OH desorption ORR *OOH formation OER, leading an ultra‐low potential gap 0.604 V improved stability. Notably, C/CC‐based liquid flexible all‐solid‐state ZABs excellent open‐circuit voltages 1.49 1.47 V, power densities 146.4 103.4 mW cm −2 , respectively, highlighting replace precious catalysts. study may open new avenues manipulating properties ‐based boosting strategy.

Language: Английский

Citations

0
Etching Accelerates Reconstruction and Activates Lattice Oxygen of Anion Vacancies‐Enriched Cobalt‐Iron Phosphide/(Oxy)Hydroxide Nanohybrid Frameworks for Enhanced Oxygen Evolution DOI

Jiayao Fan,

Jiadong Jiang,

Yingying Wang

et al.

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

Published: April 14, 2025

Abstract Transition metal phosphides (TMPs) nanostructures are considered to be promising pre‐catalysts for electrochemical oxygen evolution reaction (OER). Nonetheless, most TMPs only experience limited surface reconstruction during OER, resulting in fewer active layer, insufficient sites and thus unsatisfactory performance. Thereby, finely control the level is crucial but still challenging. Here, Co 0.7−x Fe 0.3−y P/Co x y OOH nanohybird frameworks with numerous crystalline/amorphous interfaces fabricated by alkali etching of hollow crystalline 0.7 0.3 P nanocubes, leading in‐situ growth amorphous nanosheets subunits. Such nanohybrid own abundant phosphorus vacancies, optimal interface electronic structure, hydrophilic character, which manifest exceptional OER performance overpotential 256 mV reach 10 mA cm −2 current alkaline media, exceeding 1−x OOH, 1−y P/Fe P, IrO 2 , reported unprecious‐metal‐based catalysts. As revealed series ex‐situ spectroscopic analyses, formation anion defects phase promote deep such catalyst, triggering lattice participation synergy adsorbate mechanism toward OER. This work may spur development TMPs‐based catalysts integrating defect, engineering via facile etching, their applications water splitting or other clean energy options.

Language: Английский

Citations

0