Tuning the Hydrogen Bond Network Inside the Helmholtz Plane for Industrial Hydrogen Evolution DOI Creative Commons
Xinyu Chen, Bianjing Sun, Qunliang Song

et al.

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

Published: April 3, 2025

Abstract The role of the hydrogen bond network (HBN) within Helmholtz plane (HP) in regulating evolution kinetics for catalyst development remains ambiguous owing to lack fundamental understanding. Herein, leveraging ab initio molecular dynamics simulations, it is discovered that introducing weak metal bonds Ru/RuO 2 remarkably reshapes HBN. Subsequently, nanosheets loaded with single Ga atoms (Ga SA ‐Ru/RuO ) are successfully synthesized using a one‐step annealing strategy. In situ characterizations and theoretical calculations demonstrate atomic electric field generated by Ru─Ga can further improve proportion 4‐coordinated hydrogen‐bonded water free water, thus ensuring sufficient supply reactants under high current density. Especially, ‐based anion exchange membrane electrolyzers (AEMWEs) require only 1.69 1.84 V reach an industrial density 1,000 mA cm⁻ alkaline seawater conditions, respectively, operate stably 200 h. This study offers atomic‐level perspective designing highly efficient catalysts production.

Language: Английский

Asymmetric Bond Delta‐Polarization at the Interfacial Se─Ru─O Bridge for Efficient pH‐Robust Water Electrolysis DOI
Ya Chen, Yaoda Liu, Lei Li

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Abstract The rationalization of pH‐robust catalysis is highly desired but challengeable for overall water electrolysis (WE). It requests a metal active site that can make an efficient adaption with both cathodic hydrogen and anodic oxygen evolution reactions (HER/OER). Herein, RuO 2‐x /RuSe 2 heterostructure electrocatalyst profiled interfacial Se─Ru─O bridge the splitting studies. An asymmetric bond delta‐polarization (Δp) found at bridge, including Δp > 0 Ru─O part < Ru─Se side by experiment calculation results. enlarged polarizability (Δp 0) in principle trigger lattice mediated (LOM) pathway OER; meanwhile, reduced benefit HER due to strengthened d‐p band hybridization. Resultantly, deliver ultralow overpotentials 25/10 mV Pt‐beyond 210/255 OER 10 mA cm −2 acidic/alkaline media, respectively. In especial, acidic WE be stably operated 200 h low cell voltage 1.478 V . This research clarifies polarization as criterion rational design catalysts.

Language: Английский

Citations

40
Selective oxygen reduction reaction: mechanism understanding, catalyst design and practical application DOI Creative Commons
Shilong Li, Lei Shi, Yingjie Guo

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(29), P. 11188 - 11228

Published: Jan. 1, 2024

The oxygen reduction reaction (ORR) is a key component for many clean energy technologies and other industrial processes. However, the low selectivity sluggish kinetics of ORR catalysts have hampered conversion efficiency real application these new mentioned before. Recently, tremendous efforts been made in mechanism understanding, electrocatalyst development system design. Here, comprehensive critical review provided to present recent advances field electrocatalytic ORR. two-electron four-electron transfer catalytic mechanisms evaluation parameters are discussed first. Then, up-to-date synthetic strategies

Language: Английский

Citations

22
Targeted doping induces interfacial orientation for constructing surface-functionalized Schottky junctions to coordinate redox reactions in water electrolysis DOI Creative Commons
Guangping Yang, Tianxiang Yang, Ke Wang

et al.

Advanced Powder Materials, Journal Year: 2024, Volume and Issue: 3(5), P. 100224 - 100224

Published: July 27, 2024

Tuning the surface properties of catalysts is an effective method for accelerating water electrolysis. Herein, we propose a directional doping and interfacial coupling strategy to design two surface-functionalized Schottky junction coordinating hydrogen evolution reaction (HER) oxygen (OER). Directional with B/S atoms endows amphiphilic g-C3N4 significant n-/p-type semiconductor properties. Further Fe3C modulates energy band levels B–C3N4 S–C3N4, thus resulting in functionalized specific surface-adsorption The space-charge region generated by dual modulation induces local "OH−- H+-enriched" environment, selectively promoting kinetic behavior OER/HER. Impressively, designed B–C3N4@Fe3C||S–C3N4@Fe3C pair requires only low voltage 1.52 ​V achieve efficient electrolysis at 10 ​mA ​cm−2. This work highlights potential redox reactions electrolysis, thereby resolving trade-off between catalytic activity stability.

Language: Английский

Citations

17
Iron‐Induced Localized Oxide Path Mechanism Enables Efficient and Stable Water Oxidation DOI

Bohan Yao,

Yu‐Ting Chen, Yueying Yan

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract The sluggish reaction kinetics of the anodic oxygen evolution (OER) and inadequate catalytic performance non‐noble metal‐based electrocatalysts represent substantial barriers to development anion exchange membrane water electrolyzer (AEMWE). This study performed synthesis a three‐dimensional (3D) nanoflower‐like electrocatalyst (CFMO) via simple one‐step method. substitution Co with Fe in structure induces localized oxide path mechanism (LOPM), facilitating direct O−O radical coupling for enhanced O 2 evolution. optimized CFMO‐2 demonstrates superior OER performance, achieving an overpotential 217 mV at 10 mA cm −2 , alongside exceptional long‐term stability minimal degradation after 1000 h operation 1.0 M KOH. These properties surpass most conventional noble electrocatalysts. Furthermore, assembled AEMWE system, utilizing CFMO‐2, operates cell voltage 1.65 V deliver A . In situ characterizations reveal that, addition traditional adsorbate (AEM) isolated sites, new LOPM occurred around bimetallic sites. First‐principles calculations confirm greatly reduced energy barriers. work highlights potential improving design AEMWE.

Language: Английский

Citations

12
Transition metal tellurides for water electrolysis: Recent advances and perspectives DOI

Chuanfang Zhu,

Linfeng Xiao,

Shengdong Zhang

et al.

Materials Today Energy, Journal Year: 2025, Volume and Issue: unknown, P. 101796 - 101796

Published: Jan. 1, 2025

Language: Английский

Citations

1
Molecular Weight Engineering Modulates Lignin‐Metal Supramolecular Framework to Construct Carbon‐Coated CoRu Alloy for Effective Overall Water Splitting DOI

Dalang Chen,

Jianglin Liu,

Bowen Liu

et al.

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

Published: Feb. 25, 2025

Abstract To overcome the challenges of low catalytic activity and instability, a molecular weight engineering strategy coupled with oxidative ammonolysis is developed to synthesize CoRu‐based alloy catalysts distinct morphologies properties from biorefinery lignin. This approach effectively modulates intrinsic active sites exposes unsaturated nitrogen‐oxygen structures, thereby tailoring morphology defect structure carbon layers in catalysts. The as‐synthesized CoRu lignin precursors varying weights are designated as CoRu@OALC‐EtOAC, CoRu@OALC‐EtOH, CoRu@OALC‐Residual. featuring defect‐rich graphitic carbon‐coated structure, exhibited exceptional overall water‐splitting performance (1.48 V at 10 mA cm −2 ), significantly surpassing Pt/C || Ru/C (1.58 ). In contrast, CoRu@OALC‐Residual, its amorphous demonstrated remarkable stability (350 h 100 vastly outperforming (6 In‐situ Raman spectroscopy DFT calculations revealed that adsorb * H intermediates, accelerating process. strong adsorption also induces layer rearrangement, leading dissolution oxidation metal particles. provides universal method for biomass‐derived catalysts, establishing direct relationship between weight, catalyst morphology, electrocatalytic performance.

Language: Английский

Citations

1
Energy-saving hydrogen production from sulfion oxidation-hybrid seawater splitting enabled by superwettable corrosion-resistant NiFe layered double hydroxide/FeNi2S4 heterostructured nanoarrays DOI
Lunhong Ai,

Yao Tian,

Tanyang Xiao

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 673, P. 607 - 615

Published: June 5, 2024

Language: Английский

Citations

8
Deciphering role of dual nickel sites in reconstructed hetero-anionic structure of nickel sulfide for boosted hydrogen evolution reaction DOI
Xuanzhi Liu,

Hanxiao Liao,

Shaohui Zhang

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 357, P. 124270 - 124270

Published: June 5, 2024

Language: Английский

Citations

8
Mechanism and research progress of hydrogen spillover in hydrogen evolution reaction DOI
Jie Chen, Jie Ni, Hui Xu

et al.

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1004, P. 175883 - 175883

Published: Aug. 6, 2024

Language: Английский

Citations

7
Research progress on layered metal oxide electrocatalysts for an efficient oxygen evolution reaction DOI

Lei Li,

Yaoda Liu, Ya Chen

et al.

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(21), P. 8872 - 8886

Published: Jan. 1, 2024

This article surveys the recent frontier advancements in layered metal oxide (LMO)–based catalysts for oxygen evolution reaction (OER). The design rationales, mechanism, and future perspectives of LMOs efficient OER catalysis are delineated.

Language: Английский

Citations

4