Journal of Colloid and Interface Science, Год журнала: 2024, Номер 679, С. 958 - 965
Опубликована: Окт. 10, 2024
Язык: Английский
Progress in Materials Science, Год журнала: 2024, Номер 145, С. 101294 - 101294
Опубликована: Апрель 5, 2024
Язык: Английский
Процитировано
34
Nano Letters, Год журнала: 2024, Номер unknown
Опубликована: Сен. 13, 2024
Electrochemical acidic oxygen evolution reaction (OER) is an important part for water electrolysis utilizing a proton exchange membrane (PEM) apparatus industrial H
Язык: Английский
Процитировано
21
ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(11), С. 4551 - 4564
Опубликована: Март 1, 2024
A metal–organic framework (MOF) embedded by transition metal sulfide (TMS) particles is one of the promising electrocatalyst candidates for overall water splitting (OWS) due to large surface area and abundant active sites from MOF precursor, as well tunable electronic structure higher intrinsic conductivity TMS. More importantly, its self-restructuring under alkaline conditions will lead chemical composition phase evolution catalyst surface, which source further enhanced catalytic activity. semi-MOF (labeled Co@Ni/Fe-MS/MOF) with semisacrificial template a TMS particle guest was designed exercisable universal heteroatomic Co doping partial vulcanization. The TMS/MOF heterostructure establishes an ideal bridge electron transfer. Simultaneously, dopant synergistic effect multiple also effectively regulate charge environment around sites, jointly improve adsorption/desorption kinetics reaction intermediates. As result, Co@Ni/Fe-MS/MOF exhibits distinguished overpotential (η10 = 229 mV OER, η10 174 HER) Tafel slope (52.37/114.35 dec–1 OER/HER), unrivaled long-term durability (80 h OWS). Moreover, two-electrode ∥ cell illustrates small voltage 1.54 V achieve power 10 mA cm–2. Impressively, this superior OER property comes three-layer sandwich restructured hybrid semi-MOFs in true sites. This work aspired catalyst, induce effects, shed light on preparation materials heterogeneous interface engineering, evolution.
Язык: Английский
Процитировано
20
ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(6), С. 2313 - 2323
Опубликована: Янв. 27, 2024
The proton exchange membrane (PEM) water hydrolyzer is crucial to promoting the sustainable development of hydrogen energy and facilitating large-scale transformation. However, achieving sustained stable oxygen evolution reaction (OER) in acidic solutions presents a significant challenge for noniridium based electrocatalysts. Herein, we develop Co3O4-supported RuO2 electrocatalyst with optimized catalyst–support interface interactions breaking activity–stability trade-off relationship OER. Through detailed electrochemical experiments characterization analysis, demonstrate that crystal growth Co3O4 support can be precisely regulated by modifying ligand layer-confined domain cobalt-based metal–organic frameworks (Co-MOF) precursor, thereby optimizing RuO2/Co3O4 interface. Due weakened self-sacrifice effect Co3O4, active heterogeneous electron interaction impeccable coating effect, OER stability RuO2/Co3O4–B3DC significantly improved compared while preserving intrinsic activity. Theoretical modeling suggests formation optimizes adsorption intermediates, process. Additionally, anode demonstrates promising potential application PEM electrolyzers variety renewable energy-driven electrolytic cells.
Язык: Английский
Процитировано
10
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 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.
Язык: Английский
Процитировано
10
Energy & Fuels, Год журнала: 2024, Номер 38(13), С. 11521 - 11540
Опубликована: Июнь 18, 2024
Proton exchange membrane water electrolysis (PEMWE) technology is seen as the most compatible hydrogen production with renewable energy generation. However, sluggish kinetics of anodic oxygen evolution reaction (OER) and scarcity acid-resistant, high-activity, low-cost catalysts have seriously hindered overall efficiency manufacturing costs PEMWE. Recently, ruthenium (Ru)-based materials gradually attracted attention due to their suitable binding strength toward intermediates lowest price in noble metal family. Herein, great achievements progress Ru-based acidic OER electrocatalysts are comprehensively reviewed, which started a general description mechanisms situ characterization techniques understand structure–activity relationships. Subsequently, some typical strategies enhance activity stability highlighted. Insights from synthesis methods, advanced characterizations, intermediate evolution, theoretical calculations provided, together our viewpoints on daunting challenges future endeavors for practical employment.
Язык: Английский
Процитировано
9
International Journal of Hydrogen Energy, Год журнала: 2025, Номер 105, С. 116 - 125
Опубликована: Янв. 22, 2025
Язык: Английский
Процитировано
1
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 23, 2025
Abstract The oxygen evolution reaction (OER) in proton exchange membrane water electrolyzers (PEMWE) has long stood as a formidable challenge for green hydrogen sustainable production, hindered by sluggish kinetics, high overpotentials, and poor durability. Here, these barriers are transcended through novel material design: strategic engineering of high‐density grain boundaries within solid‐solution Ru 0.8 Ir 0.2 O x ultrathin nanosheets. These carefully tailored synergistic Ir─Ru interactions, reduce the coordination atoms optimize distribution charge, thereby enhancing both catalytic activity stability nanosheets, verified merely requiring an overpotential 189 mV to achieve 10 mA cm −2 acidic electrolyte. In situ electrochemical techniques, complemented theoretical calculations, reveal that OER follows adsorption mechanism, demonstrating pivotal role boundary electronic modulation accelerating kinetics. Most notably, exhibits outstanding industrial‐scale performance PEMWE, reaching 4.0 A at 2 V maintaining >1000 h 500 . This efficiency reduces production costs $0.88 kg −1 work marks transformative step forward designing efficient, durable catalysts, offering promising pathway toward technologies advancing global transition energy.
Язык: Английский
Процитировано
1
ACS Sustainable Chemistry & Engineering, Год журнала: 2023, Номер 11(50), С. 17564 - 17594
Опубликована: Дек. 6, 2023
Proton exchange membrane water electrolysis (PEMWE) is considered the most compatible technology with intermittent renewable energies for clean hydrogen generation. More than that, compared alkaline electrolyzers, totality of practicality enhances due to obvious advantages such as efficiency, high purity, low operation pressure, etc. However, sluggish four-electron-transfer reaction oxygen evolution (OER), which involves complex intermediates and multiple steps, significantly impacts overall efficiency PEMWE. Therefore, developing highly efficient, stable, low-cost high-tech electrocatalysts acidic OER crucial. In comparison expensive commercial iridium or oxide electrocatalyst, Ru oxides are much cheaper alternatives that demonstrate superior catalytic performance OER. this perspective, generally accepted mechanisms including AEM LOM introduced corresponding pathways. Then, Ru-based explicated on performances OER, include metal metal-based alloys, RuO2-based catalysts, solid solutions, perovskites, pyrochlores, single atoms, other catalysts. Finally, challenges future research perspectives catalysts discussed.
Язык: Английский
Процитировано
16
Journal of Materials Science, Год журнала: 2024, Номер 59(23), С. 10193 - 10206
Опубликована: Июнь 1, 2024
Abstract An amphiphilic block copolymer, poly (styrene-2-polyvinyl pyridine-ethylene oxide), was used as a structure-directing and stabilizing agent to synthesize TiO 2 /RuO nanocomposite. The strong interaction of polymers with metal precursors led formation porous heterointerface . It acted bridge for electron transport, which can accelerate the water splitting reaction. Scanning microscopy, energy-dispersive X -ray spectroscopy, transmission diffraction analysis samples revealed successful fabrication nanocomposites. nanocomposites were measure electrochemical in three-electrode systems 0.1-M KOH. Electrochemical activities unveil that -150 displayed superior oxygen evolution reaction activity, having low overpotential 260 mV Tafel slope 80 mVdec −1 Graphical abstract
Язык: Английский
Процитировано
6