Journal of Colloid and Interface Science, Год журнала: 2024, Номер 676, С. 647 - 656
Опубликована: Июль 22, 2024
Язык: Английский
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Июнь 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.
Язык: Английский
Процитировано
47
Advanced Powder Materials, Год журнала: 2024, Номер 3(5), С. 100214 - 100214
Опубликована: Июнь 13, 2024
Water electrolysis via alkaline hydrogen evolution reaction (HER) is a promising approach for large-scale production of high-purity at low cost, utilizing renewable and clean energy. However, the sluggish kinetics derived from high energy barrier water dissociation impedes seriously its practical application. Herein, series hybrid Pt nanoclusters/Ru nanowires (Pt/Ru NWs) catalysts are demonstrated to accelerate HER. And optimized Pt/Ru NWs (10 % wt Pt) exhibits exceptional performance with an ultralow overpotential (24 mV 10 mA cm−2), small Tafel slope (26.3 dec−1), long-term stability, outperforming benchmark commercial Pt/C-JM-20 catalyst. This amazing also occurred in anion-exchange membrane devices, where it delivered cell voltage about 1.9 V 1 A cm−2 outstanding stability (more than 100 h). The calculations have revealed such superior exhibited by stems formed heterointerfaces, which significantly reduce decisive rate step cooperative-action between cluster Ru substance. work provides valuable perspectives designing advanced materials toward HER beyond.
Язык: Английский
Процитировано
27
Nano Letters, Год журнала: 2024, Номер 24(19), С. 5705 - 5713
Опубликована: Май 3, 2024
Ruthenium (Ru) is an ideal substitute to commercial Pt/C for the acidic hydrogen evolution reaction (HER), but it still suffers from undesirable activity due strong adsorption free energy of H* (ΔGH*). Herein, we propose crystalline phase engineering by loading Ru clusters on precisely prepared cubic and hexagonal molybdenum carbide (α-MoC/β-Mo2C) supports modulate interfacial interactions achieve high HER activity. Advanced spectroscopies demonstrate that β-Mo2C shows a lower valence state withdraws more electrons support than α-MoC, indicative interaction. Density functional theory reveals ΔGH* Ru/β-Mo2C approaches 0 eV, illuminating enhancement mechanism at interface. The resultant exhibits encouraging performance in proton exchange membrane water electrolyzer with low cell voltage (1.58 V@ 1.0 A cm–2) long stability (500 h@ cm–2).
Язык: Английский
Процитировано
22
Chemical Society Reviews, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
This review systematically provides various insights into the pH effect on hydrogen electrocatalysis, and thus providing a reference for future development of electrocatalysis based these insights.
Язык: Английский
Процитировано
19
Advanced Materials, Год журнала: 2024, Номер 36(48)
Опубликована: Окт. 6, 2024
The rational design of multi-site electrocatalysts with three different functions for facile H
Язык: Английский
Процитировано
19
Materials Today Energy, Год журнала: 2025, Номер unknown, С. 101796 - 101796
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
3
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 28, 2025
Abstract Developing highly efficient catalysts to accelerate sluggish electrode reactions is critical for the deployment of sustainable aqueous electrochemical technologies, yet remains a great challenge. Rationally integrating functional components tailor surface adsorption behaviors and adsorbate dynamics would divert reaction pathways alleviate energy barriers, eliminating conventional thermodynamic constraints ultimately optimizing flow within systems. This approach has, therefore, garnered significant interest, presenting substantial potential developing that simultaneously enhance activity, selectivity, stability. The immense promise rapid evolution this design strategy, however, do not overshadow challenges ambiguities persist, impeding realization breakthroughs in electrocatalyst development. review explores latest insights into principles guiding catalytic surfaces enable favorable contexts hydrogen oxygen electrochemistry. Innovative approaches tailoring adsorbate‐surface interactions are discussed, delving underlying govern these dynamics. Additionally, perspectives on prevailing presented future research directions proposed. By evaluating core identifying gaps, seeks inspire rational design, discovery novel mechanisms concepts, ultimately, advance large‐scale implementation electroconversion technologies.
Язык: Английский
Процитировано
3
Advanced Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 10, 2025
Abstract Designing heterogeneous interface to enhance the kinetics for electrocatalysts is a highly efficient but challenging pathway toward hydrogen evolution reaction (HER) in water electrolysis. Herein, coupling of CeO 2 quantum dots onto porous Ru aerogel through interfacial Ru‐O‐Ce bridge proposed construct ‐Ru as superior HER electrocatalyst with ultra‐low overpotentials. In situ characterizations and theoretical calculations reveal electron distribution at boost bonding sites, faster adsorption dissociation sites kinetics. Furthermore, employed excellent cathodes both acidic alkaline electrolyzers ampere‐level current density stably operated over 500 hours. Thus, synergistic effect tunes catalytic mechanism reinforces activity, realizing generation
Язык: Английский
Процитировано
3
Journal of the American Chemical Society, Год журнала: 2024, Номер 146(40), С. 27486 - 27498
Опубликована: Авг. 28, 2024
The improvement of hydrogen evolution reaction kinetics can be largely accelerated by introducing a well-designed spillover pathway into the catalysts. However, driving force and mechanism migration on surface catalysts are poorly understood rarely explored in depth. Here, inspired specific ferroelectric property HfO
Язык: Английский
Процитировано
15
Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 357, С. 124270 - 124270
Опубликована: Июнь 5, 2024
Язык: Английский
Процитировано
10