Fuel, Journal Year: 2024, Volume and Issue: 377, P. 132782 - 132782
Published: Aug. 14, 2024
Language: Английский
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(1)
Published: Nov. 23, 2023
Seawater electrolysis is an attractive way of making H2 in coastal areas, and NiFe-based materials are among the top options for alkaline seawater oxidation (ASO). However, ample Cl- can severely corrode catalytic sites lead to limited lifespans. Herein, we report that situ carbon oxyanion self-transformation (COST) from oxalate carbonate on a monolithic NiFe micropillar electrode allows safeguard high-valence metal reaction ASO. In situ/ex studies show spontaneous, timely, appropriate COST safeguards active against attack during ASO even at ampere-level current density (j). Our catalyst shows efficient stable performance, which requires overpotential as low 349 mV attain j 1 A cm-2 . Moreover, with protective surface CO32- exhibits slight activity degradation after 600 h under seawater. This work reports effective design concepts level self-transformation, acting momentous step toward defending seawater-to-H2 conversion systems.
Language: Английский
Citations
122
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Aug. 5, 2024
Electrocatalytic H
Language: Английский
Citations
73
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(31)
Published: May 20, 2024
Abstract It is of essential importance to design bifunctional electrocatalysts with excellent performance for both hydrogen evolution reaction (HER) and oxygen (OER) in seawater splitting. Herein, an approach manipulating electron redistribution NiCoP treated by P defect (P v ) engineering (NiCoP @NF) presented, exhibiting catalytic activities stability toward HER/OER alkaline solution. The reduces the surface electrooxidation reconfiguration energy barrier, making it easier drive local conversion crystals active oxy(hydroxide) OER. In addition, Ni site Co NiCoOOH are sites HER OER processes, respectively. situ generated PO 4 3− adsorbed on catalyst causes spatial repulsion, preventing Cl − corrosion electrolysis. AEM electrolyzer using @NF couple achieves high activity (2.43 V at 500 mA cm −2 long‐term durability (500 over 110 h). working efficiency 1.0 M KOH as 77.0% 100 price per GGE H 2 low $ 0.87.
Language: Английский
Citations
58
Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 12(2), P. 634 - 656
Published: Dec. 2, 2023
This review summarizes advances in bifunctional electrocatalysts and electrolyzers for seawater splitting, including various catalysts ( e.g. , phosphides, chalcogenides, borides, nitrides, (oxy)hydroxides) membrane-based/membrane-less systems.
Language: Английский
Citations
53
ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(9), P. 6981 - 6991
Published: April 19, 2024
Ferroferric oxide-based electrocatalysts are widely applied as hydrogen evolution reaction (HER) catalysts due to their low cost and good electrical conductivity, but they tend exhibit slow adsorption kinetics for HER poison by corrosive Cl– alkaline seawater splitting. In this regard, we report a nanosheet-like catalyst constructed decorating Fe3O4 with Ru P dual doping (Ru/P–Fe3O4@IF). situ characterization density functional theory (DFT) calculations demonstrate that the resulting Ru/P–Fe3O4@IF shows enhanced strength coverage thermal neutral free energy of adsorbed H (ΔGH*) modulating d-band center Fe3O4. Moreover, Ru/P moving up center, weak makes on active sites be avoided in Benefiting from above, exhibits superior performance commercial Pt/C overpotentials only −46 −144 mV reach 100 1000 mA cm–2, respectively. addition, AEM electrolyzer assembled Ru/P–Fe3O4 requires 1.93 V (cell voltage) drive current 2 A cm–2 can maintain stable operation more than h at 500
Language: Английский
Citations
48
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Sept. 27, 2024
Language: Английский
Citations
45
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(30)
Published: May 27, 2024
Abstract Electrochemical water splitting is a promising technique for the production of high‐purity hydrogen. Substituting slow anodic oxygen evolution reaction with an oxidation that thermodynamically more favorable enables energy‐efficient Moreover, this approach facilitates degradation environmental pollutants and synthesis value‐added chemicals through rational selection small molecules as substrates. Strategies small‐molecule electrocatalyst design are critical to electrocatalytic performance, focus on achieving high current density, selectivity, Faradaic efficiency, operational durability. This perspective discusses key factors required further advancement, including technoeconomic analysis, new reactor system design, meeting requirements industrial applications, bridging gap between fundamental research practical product detection separation. aims advance development hybrid electrolysis applications.
Language: Английский
Citations
41
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(22)
Published: Feb. 4, 2024
Abstract Seawater electrolysis is a sustainable technology for producing hydrogen that would neither cause global freshwater shortages nor create carbon emissions. However, this severely hampered by the insufficient stability and competition from chlorine evolution reaction (ClER) in actual application. Herein, metal–organic framework (MOF)‐on‐MOF heterojunction (Ni‐BDC/NH 2 ‐MIL‐88B(Fe)) denoted as (Ni‐BDC/NM88B(Fe)) synthesized an effective oxygen (OER) electrocatalyst high‐performance seawater electrolysis, which exhibits long of 200 h low overpotentials 232 299 mV at 100 mA cm −2 alkaline solution, respectively. The exceptional performance attributed to rapid self‐reconstruction Ni‐BDC/NM88B(Fe) produce NiFeOOH protective layer, thereby avoiding ClER‐induced dissolution. Moreover, interface interaction between Ni‐BDC NM88B(Fe) could form Ni─O─Fe bonds promote electron transfer lower energy barrier rate‐determining step, accelerating OER. These electrochemical properties make it intriguing candidate efficient practical electrolysis.
Language: Английский
Citations
36
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 25, 2024
Abstract Catalysts play a crucial role in water electrolysis by reducing the energy barriers for hydrogen and oxygen evolution reactions (HER OER). Research aims to enhance intrinsic activities of potential catalysts through material selection, microstructure design, various engineering techniques. However, consumption has often been overlooked due intricate interplay among catalyst microstructure, dimensionality, catalyst–electrolyte–gas dynamics, surface chemistry, electron transport within electrodes, transfer electrode components. Efficient development high‐current‐density applications is essential meet increasing demand green hydrogen. This involves transforming with high into electrodes capable sustaining current densities. review focuses on improvement strategies mass exchange, charge transfer, resistance decrease consumption. It bridge gap between laboratory‐developed, highly efficient industrial regarding structural catalyst‐electrode interplay, outlining roadmap hierarchically structured electrode‐based minimizing loss electrocatalysts splitting.
Language: Английский
Citations
34
Accounts of Materials Research, Journal Year: 2024, Volume and Issue: 5(6), P. 712 - 725
Published: May 15, 2024
ConspectusRare earth interface structure materials (RE-ISM) play a crucial role in the field of inorganic synthesis and provide an effective means achieving refined utilization rare elements. By capitalizing on unique properties earth, these are designed for functional applications at interfaces. Given escalating energy environmental concerns, there is urgent need to expedite development efficient pathways clean storage conversion. Electrocatalytic conversion energetic small molecule way with as carrier. However, catalysts often constrained by limitations catalyst system lack clarity regarding reaction processes. It provides new opportunities design catalytic developing RE-ISM analyzing dynamic evolution process across time space dimensions.In this Account, we mainly focus research progress synthesis, application, mechanism order effectively high-performance materials. classified into three categories based size substrate, following guidance provided phase diagram. includes atomic interfaces, cluster heterstructures. strategically designing diverse structures, it feasible synthesize material systems that tailored toward multitude applications. The synthesized employed electrocatalytic molecules, offering novel prospects electrode redox both negative positive grades involves structural molecules through electron transfer. facilitating such reactions. Achieving construction necessitates in-depth analysis mechanisms employing situ spectroscopy technology. transformation morphology, structure, was analyzed from perspective resolution, spatial spectral resolution. We elucidate correlation between interaction intrinsic cognitive foundation analysis. This theoretical support RE-ISM. In summary, expect will ideas insights further promote rapid high performance
Language: Английский
Citations
28