Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 23, 2024
Regulating competitive reaction pathways to direct the selectivity of electrochemical CO
Language: Английский
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(18)
Published: Feb. 23, 2024
Abstract Developing ruthenium‐based heterogeneous catalysts with an efficient and stable interface is essential for enhanced acidic oxygen evolution reaction (OER). Herein, we report a defect‐rich ultrathin boron nitride nanosheet support relatively independent electron donor acceptor sites, which serves as reservoir receiving station RuO 2 , realizing the rapid supply reception of electrons. Through precisely controlling interface, low OER overpotential only 180 mV (at 10 mA cm −2 ) long‐term operational stability (350 h) are achieved, suggesting potential practical applications. In situ characterization theoretical calculations have validated existence localized electronic recycling between BN nanosheets (BNNS). The electron‐rich Ru sites accelerate adsorption water molecules dissociation intermediates, while interconnection O‐terminal B‐terminal edge establishes back‐donation, effectively suppressing over‐oxidation lattice oxygen. This study provides new perspective constructing highly active catalytic interface.
Language: Английский
Citations
45
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
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
A comprehensive summary of the stability electrocatalytic OER will provide insight into electrocatalyst design and device optimization for industrial applications.
Language: Английский
Citations
38
Materials Horizons, Journal Year: 2024, Volume and Issue: 11(7), P. 1797 - 1807
Published: Jan. 1, 2024
The obtained bimetallic sulfide catalyst can be reconstituted as FeCoOOH, which has high efficacy for water splitting. activation energy barrier of key reaction steps effectively reduced by dual-metal cooperation.
Language: Английский
Citations
36
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(36)
Published: June 15, 2024
Although Ru-based materials are among the outstanding catalysts for oxygen evolution reaction (OER), instability issue still haunts them and impedes widespread application. The of OER is generally ascribed to formation soluble species through over-oxidation Ru structural decomposition caused by involvement lattice oxygen. Herein, an effective strategy selectively activating around site proposed improve activity stability. Our synthesized spinel-type electrocatalyst Zn co-doped Co
Language: Английский
Citations
33
Progress in Materials Science, Journal Year: 2024, Volume and Issue: 145, P. 101294 - 101294
Published: April 5, 2024
Language: Английский
Citations
31
Small, Journal Year: 2024, Volume and Issue: 20(29)
Published: Feb. 13, 2024
Ruthenium oxide is currently considered as the promising alternative to Ir-based catalysts employed for proton exchange membrane water electrolyzers but still faces bottlenecks of limited durability and slow kinetics. Herein, a 2D amorphous/crystalline heterophase ac-Cr
Language: Английский
Citations
26
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(30), P. 18832 - 18865
Published: Jan. 1, 2024
This review focuses mainly on the overall facilitating effect of heterostructures OER process. The fabrication heterostructured electrocatalysts and relationship between their structures electrocatalytic properties are discussed.
Language: Английский
Citations
24
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(33), P. 23146 - 23157
Published: Aug. 7, 2024
The poor durability of Ru-based catalysts limits the practical application in proton exchange membrane water electrolysis (PEMWE). Here, we report that asymmetric active units Ru
Language: Английский
Citations
24
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(32)
Published: May 30, 2024
Abstract Rechargeable Zn–air batteries (ZABs) are promising for energy storage and conversion. However, the high charging voltage low efficiency hinder their commercialization. Herein, these challenges addressed by employing precisely constructed multifunctional Fe–Co diatomic site catalysts (FeCo‐DACs) integrating iodide/iodate redox into ZABs to create Zinc–air/iodide hybrid (ZAIHBs) with highly efficient catalyst. The strong coupling between 3d orbitals of Fe Co weakens excessively binding strength active sites intermediates, enhancing catalytic activities oxygen reduction/evolution reaction redox. Consequently, FeCo‐DACs exhibit outstanding bifunctional activity a small potential gap (Δ E = 0.66 V) stability. Moreover, an performance toward is obtained. Therefore, FeCo‐DAC‐based ZAIHBs up 75% at 10 mA cm −2 excellent cycling stability (72% after 500 h). This research offers critical insights rational design DACs paves way high‐energy devices.
Language: Английский
Citations
22