ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 4596 - 4604
Published: March 4, 2025
Language: Английский
ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(16), P. 10672 - 10682
Published: July 31, 2023
The acidic water-splitting technology based on the polymer exchange membrane can produce hydrogen efficiently, continuously, and cleanly, which is expected to alleviate energy crisis. However, even noble metal-based electrocatalysts such as IrOx species would dissolve rapidly during oxygen evolution. Herein, we successfully assemble high-density carbon nanotubes (CNTs) encapsulated with IrCo nanoparticles (NPs) cloth (IrCo@CNT/CC) using a facile MOF-templated dicyandiamide-assisted pyrolysis strategy. Benefiting from favorable synergistic effect between Co Ir protection of CNT, obtained IrCo@CNT/CC only requires low cell voltage 1.500 V reach 10 mA cm–2 for water splitting an extremely loading 0.027 mg exhibits robust stability under continuous electrolysis 90 h in 0.5 M H2SO4, ranking it among one best bifunctional splitting. Detailed experiments reveal that CNT-encapsulated NPs remain after evolution reaction (HER) but transform into Co-doped IrO2 (OER). Further DFT simulation calculations confirm doping optimize their electronic structures lower barriers HER OER, respectively.
Language: Английский
Citations
63
Nano Energy, Journal Year: 2023, Volume and Issue: 113, P. 108570 - 108570
Published: May 29, 2023
Language: Английский
Citations
59
Fuel, Journal Year: 2023, Volume and Issue: 359, P. 130131 - 130131
Published: Nov. 24, 2023
Language: Английский
Citations
48
CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2024, Volume and Issue: 59, P. 38 - 81
Published: April 1, 2024
Language: Английский
Citations
34
ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(5), P. 2182 - 2192
Published: April 12, 2024
Introducing oxygen vacancies into Co-based oxides with different surface structures can significantly affect their coordination environments and electronic structures, possibly contributing to the variation of electrocatalytic evolution reaction (OER) activity. Herein, were introduced Co3O4 cubes truncated octahedrons uncover effects facets (001) (111) on intrinsic OER activity oxygen-defective Co3O4. The (001)-faceted exhibited a lower onset overpotential 298 mV than that multifaceted (335 mV) because sufficient lattice participation in process. Theoretical calculations revealed vacancy surfaces upshift O 2p band center trigger oxidation mechanism while matched well absorbate mechanism. This work offers new insight for designing electrocatalysts by selectively introducing defects well-defined crystal facets.
Language: Английский
Citations
33
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
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 13, 2024
Single-atom electrocatalysts (SACs) are a class of promising materials for driving electrochemical energy conversion reactions due to their intrinsic advantages, including maximum metal utilization, well-defined active structures, and strong interface effects. However, SACs have not reached full commercialization broad industrial applications. This review summarizes recent research achievements in the design crucial electrocatalytic on sites, coordination, substrates, as well synthesis methods. The key challenges facing activity, selectivity, stability, scalability, highlighted. Furthermore, it is pointed out new strategies address these increasing activity enhancing utilization improving optimizing local environment, developing fabrication techniques, leveraging insights from theoretical studies, expanding potential Finally, views offered future direction single-atom electrocatalysis toward commercialization.
Language: Английский
Citations
26
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: July 2, 2024
Abstract Exploring an efficient nonnoble metal catalyst for hydrogen evolution reaction (HER) is critical industrial alkaline water electrolysis. However, it remains a great challenge due to the additional energy required H─OH bond cleavage and lack of enough H 2 O adsorption sites most catalysts. Herein, integration oxophilic Eu 3 with NiCo alloy evoked multisite synergism facilitate dissociation HER proposed. The optimized ‐NiCo exhibits excellent activity low overpotential only 60 mV at 10 mA cm −2 good electrochemical stability, which superior that ‐free comparable benchmark Pt/C. key roles on enhanced performance are identified by in situ Raman spectroscopy theoretical calculations. It discovered strong oxophilicity facilitates breakage bonding while evoking electron redistribution /NiCo interface accelerating Volmer step HER. Furthermore, obtained as both anode cathode displays overall water‐splitting stability 1.0 M KOH solution. believed this study provides important inspiration design high‐performance electrocatalysts toward based rare‐earth materials.
Language: Английский
Citations
26
Small, Journal Year: 2024, Volume and Issue: 20(27)
Published: Jan. 28, 2024
Low-cost bifunctional electrocatalysts capable of efficiently driving the hydrogen evolution reaction (HER) and oxygen (OER) are needed for growth a green economy. Herein, Ru/Co
Language: Английский
Citations
18
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216190 - 216190
Published: Sept. 5, 2024
Language: Английский
Citations
17