Nano Research, Journal Year: 2024, Volume and Issue: 17(7), P. 5786 - 5794
Published: March 15, 2024
Language: Английский
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(40)
Published: Aug. 14, 2023
In the pursuit of long-term stability for oxygen evolution reaction (OER) in seawater, retaining intrinsic catalytic activity is essential but has remained challenging. Herein, we developed a Nix Cry O electrocatalyst that manifested exceptional OER alkaline condition while improving over time by dynamic self-restructuring. 1 M KOH, required overpotentials only 270 and 320 mV to achieve current densities 100 500 mA cm-2 , respectively, with excellent exceeding 475 h at 280 . The combination electrochemical measurements situ studies revealed leaching redistribution Cr during prolonged electrolysis resulted increased electrochemically active surface area. This eventually enhanced catalyst porosity improved activity. was further applied real seawater from Red Sea (without purification, KOH added), envisaging dynamically evolving can offset adverse site-blocking effect posed impurities. Remarkably, exhibited stable operation 2000, 275 10, respectively. proposed mechanistic insights represented step towards realization non-noble metal-based direct splitting.
Language: Английский
Citations
78
Advanced Science, Journal Year: 2024, Volume and Issue: 11(21)
Published: March 19, 2024
Abstract The generation of green hydrogen by water splitting is identified as a key strategic energy technology, and proton exchange membrane electrolysis (PEMWE) one the desirable technologies for converting renewable sources into hydrogen. However, harsh anode environment PEMWE oxygen evolution reaction (OER) involving four‐electron transfer result in large overpotential, which limits overall efficiency production, thus efficient electrocatalysts are needed to overcome high overpotential slow kinetic process. In recent years, noble metal‐based (e.g., Ru/Ir‐based metal/oxide electrocatalysts) have received much attention due their unique catalytic properties, already become dominant acidic OER process applied commercial devices. these still face thorny problem conflicting performance cost. this review, first, metal briefly classified according forms existence, mechanisms outlined. Then, focus on summarizing improvement strategies with respect activity stability over years. Finally, challenges development prospects discussed.
Language: Английский
Citations
78
Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(25), P. 13089 - 13106
Published: Jan. 1, 2023
This article reviews the recent development of self-supporting metal–organic framework-based hydrogen and oxygen electrocatalysts with a focus on synthesis strategy application, concluding some current challenges future perspectives.
Language: Английский
Citations
58
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151348 - 151348
Published: April 16, 2024
Language: Английский
Citations
57
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(24)
Published: Jan. 7, 2024
Abstract Resourceful and inexpensive seawater direct splitting omits the desalination process effectively increases efficiency of hydrogen energy generation. However, development is hampered by competing selectivity challenges from anodic oxygen evolution reaction (OER) chlorine issues electrode corrosion. Herein, borate anion‐intercalated NiV‐LDH nanoflakes/NiCoP nanowires heterostructures supported on Ni foam (2D/1D NiV‐BLDH/NiCoP/NF) synthesized. Theoretical calculations show that a small amount V atom doping in Ni(OH) 2 favorable for changing electronic environment around atoms via bridging Ni─O, which can construct Ni─O─V to accelerate electron transfer promote catalytic activity. The anions (B(OH) 4 − ) intercalation not only results good hydrophilicity high OH but also weakens adsorption (Cl ), restrains reaction. Thus, component optimized NiV 0.1 ‐BLDH/NiCoP/NF electrocatalyst requires 268 mV overpotential reach 100 mA cm −2 OER an alkaline environment. Particularly, NiCoP/NF||NiV cell exhibits attractive overall water performance with low voltage 1.46 1.53 at 10 freshwater seawater, respectively. design strategy this provides new avenue splitting.
Language: Английский
Citations
48
Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(43)
Published: Oct. 6, 2023
Abstract Hydrogen production from water electrolysis plays an important role for the development of hydrogen‐based energy sources. Developing efficient electrocatalysts is crucial accelerating reaction kinetics and achieving large‐scale electrolysis. Despite significant advancements in hydrogen evolution (HER) achieved over past few decades, there remains a lack comprehensive discussion on in‐depth mechanism enhanced activity, particularly with regard to active intermediates. Recently, state‐of‐the‐art characterization methods theoretical computation, optimizing interaction between intermediates corresponding sites has been demonstrated as effective strategy enhance intrinsic catalytic activity. Herein, recent advances design guided by HER are presented. Emphasis focused key that determine activity strategies tune Finally, outlook future challenges perspectives based given.
Language: Английский
Citations
46
Chemical Communications, Journal Year: 2023, Volume and Issue: 59(81), P. 12144 - 12147
Published: Jan. 1, 2023
Herein, two-dimensional cobalt-doped MnPSe3 nanosheets (CMPS) were constructed, which served as an outstanding bifunctional catalyst for alkaline seawater splitting, i.e., offering the current density of 10 mA cm-2 with applied overpotentials 59 and 300 mV hydrogen evolution reaction (HER) oxygen (OER), respectively. The assembled two-electrode system CMPS//CMPS also demonstrated excellent catalytic activity (10 cm-2, 1.59 V) can remain stable more than 100 h. Moreover, theoretical calculations showed that CMPS features a suitable H* adsorption beneficial HER, well lower free energy barrier favorable OER.
Language: Английский
Citations
45
Small, Journal Year: 2024, Volume and Issue: 20(28)
Published: Feb. 16, 2024
Abstract Renewable electricity‐driven seawater splitting presents a green, effective, and promising strategy for building hydrogen (H 2 )‐based energy systems (e.g., storing wind power as H ), especially in many coastal cities. The abundance of Cl − seawater, however, will cause severe corrosion anode catalyst during the electrolysis, thus affect long‐term stability catalyst. Herein, oxidation performances NiFe layered double hydroxides (LDH), classic oxygen (O ) evolution material, can be boosted by employing tungstate (WO 4 2– intercalated guest. Notably, insertion WO 2− to LDH layers upgrades reaction kinetics selectivity, attaining higher current densities with ≈100% O generation efficiency alkaline seawater. Moreover, after 350 h test at 1000 mA cm −2 , only trace active chlorine detected electrolyte. Additionally, follows lattice mechanism on .
Language: Английский
Citations
42
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 514, P. 215899 - 215899
Published: May 13, 2024
Language: Английский
Citations
40
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)
Published: Feb. 1, 2024
Abstract Seawater electrolysis for hydrogen production is a sustainable and economical approach that can mitigate the energy crisis global warming issues. Although various catalysts/electrodes with excellent activities have been developed high‐efficiency seawater electrolysis, their unsatisfactory durability, especially anodes, severely impedes industrial applications. In this review, attention paid to factors affect stability of anodes corresponding strategies designing catalytic materials prolong anode's lifetime. addition, two important aspects—electrolyte optimization electrolyzer design—with respect anode improvement are summarized. Furthermore, several methods rapid assessment proposed fast screening both highly active stable catalysts/electrodes. Finally, perspectives on future investigations aimed at improving systems outlined.
Language: Английский
Citations
33