Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(44)
Published: July 16, 2024
The productions of hydrogen peroxide (H
Language: Английский
Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Language: Английский
Citations
2
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 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.
Language: Английский
Citations
16
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: July 26, 2024
Abstract The development of efficient oxygen evolution reaction (OER) electrocatalysts is critical to overcome the efficiency bottleneck in hydrogen generation via water electrolysis. Hollow nanostructured materials have emerged as a hot topic for electrocatalysis research because their advantages, including abundant active sites, large contact area between catalyst and electrolyte, short transmission path. As highly stable OER electrocatalysts, cobalt‐based attracted more attention. In this work, cobalt metal/cobalt phosphides/nitrogen‐doped carbon composites (Co‐Co x P/NC) with hierarchical hollow structure are designed by using ZIF‐67 microspheres precursors. By coating ZIF‐8 on surface further carbonizing, nanowhiskers successfully formed spheres under catalytic effect Co nanoparticles at high temperature. subsequent phosphating process, solid nanocrystalline particles transformed into core–shell CoP 2 P account Kirkendall effect. Through optimization microstructure material synergistic transition metal, metal phosphide, nitrogen doping, overpotential optimal only 287 mV 10 mA cm −2 current density 1 m KOH.
Language: Английский
Citations
12
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(35)
Published: May 21, 2024
Abstract Interstitial filling of light atoms strongly affects the electronic structure and adsorption properties parent catalyst due to ligand ensemble effects. Different from conventional doping surface modification, constructing ordered intermetallic structures is more promising overcome dissolution reconstruction active sites through strong interactions generated by atomic periodic arrangement, achieving joint improvement in catalytic activity stability. However, for tightly arranged metal lattices, such as iridium (Ir), obtaining further unveiling their interstitial effects are still limited highly activated processes. Herein, we report a high‐temperature molten salt assisted strategy form Ir−B compounds (IrB 1.1 ) with boron (B) atoms. The B residing lattice Ir constitutes favorable surfaces donor‐acceptor architecture, which has an optimal free energy uphill rate‐determining step (RDS) oxygen evolution reaction (OER), resulting enhanced activity. Meanwhile, coupling structural units suppresses demetallation behavior Ir, ensuring Such B‐induced endow IrB higher OER performance than commercial IrO 2 , validated proton exchange membrane water electrolyzers (PEMWEs).
Language: Английский
Citations
10
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 9, 2024
Abstract A breakthrough in manufacturing procedures often enables people to obtain the desired functional materials. For field of energy conversion, designing and constructing catalysts with high cost‐effectiveness is urgently needed for commercial requirements. Herein, molten salt‐assisted synthesis (MSAS) strategy emphasized, which combines advantages traditional solid liquid phase catalysts. It not only provides sufficient kinetic accessibility, but effectively controls size, morphology, crystal plane features product, thus possessing promising application prospects. Specifically, selection role salt system, as well mechanism assistance are analyzed depth. Then, creation catalyst by MSAS electrochemical conversion related introduced detail. Finally, key problems countermeasures faced breakthroughs discussed look forward future. Undoubtedly, this systematical review insights here will promote comprehensive understanding further stimulate generation new efficiency
Language: Английский
Citations
10
Materials Horizons, Journal Year: 2025, Volume and Issue: 12(6), P. 1757 - 1795
Published: Jan. 1, 2025
Noble metal-based oxide electrocatalysts are essential for the development of H 2 production technology by water electrolysis, and this review summarises recent research progress noble metal oxides in field electrolysis.
Language: Английский
Citations
1
Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 536, P. 216651 - 216651
Published: April 6, 2025
Language: Английский
Citations
1
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: April 13, 2025
Developing ruthenium-based oxide catalysts capable of suppressing lattice oxygen participation in the catalytic reaction process is crucial for maintaining stable evolution (OER) under acidic conditions. Herein, we delicately construct a RuO2 nanoparticle-anchored LiCoO2 nanosheet electrocatalyst (RuO2/LiCoO2), achieving dynamic optimization during and improving stability. Benefiting from unique electrochemical delithiation characteristics support, covalency Ru-O bond effectively regulated OER process. The weakened covalent inhibits ensures continuous operation Ru active sites. Moreover, extended optimized RuO2/LiCoO2 catalyst reduces formation energy barrier *OOH intermediates, accelerating progress OER. As result, requires only an overpotential 150 ± 2 mV at 10 mA cm-2 0.5 M H2SO4 operates stably 2000 h 1 A proton exchange membrane water electrolysis. This work opens new avenues designing efficient catalysts.
Language: Английский
Citations
1
International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 80, P. 696 - 711
Published: July 17, 2024
Language: Английский
Citations
8
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 3, 2024
Abstract Polymetallic oxides with extraordinary electrons/geometry structure ensembles, trimmed electron bands, and way‐out coordination environments, built by an isomorphic substitution strategy, may create unique contributing to concertedly catalyze water oxidation, which is of great significance for proton exchange membrane electrolysis (PEMWE). Herein, well‐defined rutile InSnRuO 2 density‐controllable oxygen vacancy (Ov)‐free polarons are firstly fabricated in situ substitution, using trivalent In species as Ov generators the adjacent metal ions donors form orderly concerted In‐Ov‐Ru‐O‐Sn substructures tetravalent oxides. For acidic obtained displays ultralow overpotential 183 mV (versus RHE) a mass activity (MA) 103.02 A mg Ru −1 , respectively. long‐term stability test PEMWE, it can run at low unchangeable cell potential (1.56 V) 200 h 50 mA cm −2 far exceeding current IrO ||Pt/C assembly 0.5 m H SO 4 . Accelerated degradation testing results PEMWE pure electrolyte show no significant increase voltage even when gradually increased from 1 5 The remarkably improved performance associated stabilized dense Ov‐electron polarons, synergistically activates band sites then boosting evolution kinetics. More importantly, self‐trapped polaron induces decrease entropy enthalpy, efficiently hinder atoms leaching increasing lattice atom diffusion energy barrier, achieves oxide. This work open door design next‐generation Ru‐based catalysts asymmetric active efficient electrocatalysis application.
Language: Английский
Citations
8