Tuning Surface Coordination Environment of Ni3N by Fluorine Modification for Efficient Methanol Electrooxidation Assisted Hydrogen Evolution DOI
Hongye Qin, Jinhong Li,

Guangliang Lin

et al.

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

Published: May 30, 2025

Abstract Replacing the kinetically sluggish oxygen evolution reaction with thermodynamically favorable methanol oxidation (MOR) represents a promising strategy for energy‐efficient hydrogen production. However, optimizing electrocatalytic performance in coupled (HER) and MOR requires precise regulation of electrochemical coordination environment fundamental understanding activity origins, posing significant challenge. Here, scalable is developed that harnesses high electronegativity fluorine (F) to tailor Ni 3 N, enhancing HER kinetics. Concurrently, adsorbed F ions induce rapid extensive self‐reconstruction N surface during by dynamically modulating interfacial ion concentrations (OH⁻ species). This reconstruction enhances catalytic enables selective formate via sequential pathway, involving primary O‐H bond activation followed subsequent C‐H cleavage at active sites. Consequently, 10 ‐Ni demonstrates exceptional bifunctional performance, delivering 2.02 V remarkable stability (600 h) MOR‐coupled production membrane electrode assembly‐based flow electrolyzer an industrially relevant current density 200 mA cm −2 . work establishes dual‐regulation paradigm electrocatalysts, offering mechanistic insights into rational design framework next‐generation energy conversion systems.

Language: Английский

Research Progress of Non‐Noble Metal‐Based Self‐Supporting Electrode for Hydrogen Evolution Reaction at High Current Density DOI Open Access

Xiaoqian Shi,

Wenjing Gu,

Bin Zhang

et al.

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

Published: March 5, 2025

Abstract Electrocatalytic water splitting has emerged as a key method for large‐scale production of green hydrogen. Constructing efficient, durable, and low‐cost electrocatalysts the hydrogen evolution reaction at high current densities is prerequisite practical industrial applications splitting. Recently, non‐noble metal‐based self‐supporting electrodes have been explored density due to their cost‐effective, conductivity metal substrate, robust interfacial binding between catalyst strong mechanical stability. In this review, recently reported (Ni, Fe, Cu, Co, Ti, Mo, alloy) electrode applied are comprehensively summarized, classified, discussed. Five fundamental design principles such intrinsic activity, abundant active sites, fast electron transfer, mass transport, stability proposed discussed achieve high‐performance under densities. Furthermore, various modification strategies including heteroatom doping, morphology engineering, interface phase strain engineering enhance catalytic activity durability electrode. Finally, challenges prospects designing efficient stable in future This comprehensive overview will provide valuable insight guidance development production.

Language: Английский

Citations

1
Recent advances in electrochemical cathodic nitrogen oxide reduction coupled with thermodynamically favorable anodic oxidation DOI

Zhijie Cui,

Honghai Wang, Chunli Li

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110939 - 110939

Published: April 1, 2025

Language: Английский

Citations

1
Self‐Supported Bimetallic Nickel Catalyst for High‐Efficiency Urea Electrocatalytic Oxidation DOI

Sundus Umer,

Zhangyou Wang, Haoliang Lu

et al.

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

Published: May 13, 2025

Abstract The electrocatalytic oxidation of urea (UOR) at near‐theoretical potentials presents a promising approach for efficient energy conversion. A critical challenge lies in enhancing the compatibility between active sites and multiple intermediates UOR to accelerate dehydrogenation kinetics, thereby overcoming high overpotential barrier oxidation. Herein, we propose strategy enhance d–p orbital hybridization via bimetallic doping develop silver/cobalt (ACO/NS) co‐doped nickel sulfide‐based self‐supporting composite catalyst. synergistic interaction oxide sulfide heterojunction regulates hybridization, redistributes charge, optimizes adaptability Ni site levels better match various intermediates. This promotes electron coupling processes with OH⁻. Experimental results demonstrate that ACO/NS exhibits outstanding activity, achieving current density 10 mA cm −2 potential 1.04 V (versus RHE) maintaining stable activity over 168 h. Theoretical analysis combined experimental findings reveals microscopic reaction mechanism low potentials: enhanced induced by modulates adsorption strength OH* urea, accelerating kinetics work highlights feasibility through systematic modulation optimization catalysts, providing valuable insights development high‐performance catalytic systems.

Language: Английский

Citations

0
Constructing Ultra‐Stable Electrocatalysts to Achieve Adaptability of Industrial‐Level Alkaline Water Electrolyzers for Fluctuating Renewable Energies DOI

Guoqing Xu,

Minghui Xing,

Zelong Qiao

et al.

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

Published: May 15, 2025

Abstract Alkaline water electrolyzer (AWE) is widely considered as an environmentally‐friendly technique for green H 2 production. However, it still a great bottleneck that the AWE technology cannot meet fluctuating renewable energies, due to instability and poor resistant counter‐current property of electrocatalysts in AWE. Herein, high‐stable robust WMo‐CoP@NM electrocatalyst constructed by modulating electronic structure CoP catalysts. The catalyst not only exhibits excellent hydrogen evolution reaction (HER) performance at ampere‐level current densities, but also presents outstanding adaptability multi‐cycle start‐stop tests AWE, which offers opportunity use energies produce . Importantly, (cathode)||NM (anode) holds ultra‐long stability over 1500 h 30 wt.% KOH 65 °C, confirms their potential practical applications. DFT calculation shows synergistic effect Mo W doping can increase adsorption capability optimize species, therefore efficiently promote HER performance. In short, this work provides first example via designing catalysts realize will accelerate coupling with

Language: Английский

Citations

0
Atomic Size Misfit for Electrocatalytic Small Molecule Activation DOI Creative Commons

Ping Hong,

Changfan Xu,

Huaping Zhao

et al.

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

Published: May 26, 2025

Abstract The efficient activation of small molecules such as H 2 O, CO , and N for sustainable fuel chemical production is a critical challenge in catalysis, owing to the strong covalent bonds (O─H, C═O, N≡N) that resist easy cleavage. Catalysts are pivotal overcoming these energy barriers, enhancing reaction rates selectivity. strategy atomic size misfit, which introduces structural defects like vacancies, grain boundaries, dislocations, has gained attention promising approach optimize catalytic activity. This modulates interactions, alters electronic structures, enhances reactivity active sites, facilitating molecules. Moreover, this holds significant potential reducing environmental impact by enabling more processes. However, current research on misfit remains fragmented, lacking unified framework. A comprehensive review essential consolidate its mechanisms, applications, integration with other tuning methods alloying doping. aims provide valuable insights into design next‐generation catalysts, guiding future developments conversion technologies offering pathways practical, scalable applications molecule activation.

Language: Английский

Citations

0
Tuning Surface Coordination Environment of Ni3N by Fluorine Modification for Efficient Methanol Electrooxidation Assisted Hydrogen Evolution DOI
Hongye Qin, Jinhong Li,

Guangliang Lin

et al.

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

Published: May 30, 2025

Abstract Replacing the kinetically sluggish oxygen evolution reaction with thermodynamically favorable methanol oxidation (MOR) represents a promising strategy for energy‐efficient hydrogen production. However, optimizing electrocatalytic performance in coupled (HER) and MOR requires precise regulation of electrochemical coordination environment fundamental understanding activity origins, posing significant challenge. Here, scalable is developed that harnesses high electronegativity fluorine (F) to tailor Ni 3 N, enhancing HER kinetics. Concurrently, adsorbed F ions induce rapid extensive self‐reconstruction N surface during by dynamically modulating interfacial ion concentrations (OH⁻ species). This reconstruction enhances catalytic enables selective formate via sequential pathway, involving primary O‐H bond activation followed subsequent C‐H cleavage at active sites. Consequently, 10 ‐Ni demonstrates exceptional bifunctional performance, delivering 2.02 V remarkable stability (600 h) MOR‐coupled production membrane electrode assembly‐based flow electrolyzer an industrially relevant current density 200 mA cm −2 . work establishes dual‐regulation paradigm electrocatalysts, offering mechanistic insights into rational design framework next‐generation energy conversion systems.

Language: Английский

Citations

0