Molybdenum/selenium based heterostructure catalyst for efficient hydrogen evolution: Effects of ionic dissolution and repolymerization on catalytic performance

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 658, С. 32 - 42

Опубликована: Дек. 9, 2023

Язык: Английский

---

Recent advances in NiFe layered double hydroxide electrocatalysts for seawater oxidation

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1002, С. 175368 - 175368

Опубликована: Июнь 27, 2024

Язык: Английский

---

Catalysts for Direct Seawater Electrolysis: Current Status and Future Prospectives

ChemElectroChem, Год журнала: 2024, Номер 11(9)

Опубликована: Март 14, 2024

Abstract Global freshwater shortage is forcing researchers to focus on seawater electrolysis for large‐scale green hydrogen production. Seawater purification by reverse osmosis (RO) use in conventional water electrolyzers (WEs) another approach, however, that requires large capital investments. Alternatively, can be used directly a novel type of anion exchange membrane WE (AEMWE) which currently under development. The AEMWEs have the advantage using non‐precious catalysts and are less sensitive presence impurities. Success this early‐stage technology relies development efficient durable electrocatalysts. This paper provides comprehensive review status future trends developing operating with seawater. Catalysts ranked based their activity durability at high current densities 500 mAcm −2 1000 . Notable anode catalysts, S−NiFe2O4, NiFe LDH, exhibit reduced OER overpotentials 287 mV 296 Top‐performing cathode HER include HW−NiMoN‐2 h (132 mV) Pt−Co−Mo (117 Bifunctional such as CoxPv@NC operate below an overall voltage 2 V comparative analysis professionals critical insights advancing direct electrolysis.

Язык: Английский

---

Multicomponent nickel-molybdenum-tungsten-based nanorods for stable and efficient alkaline seawater splitting

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 667, С. 414 - 424

Опубликована: Апрель 16, 2024

Язык: Английский

---

Harnessing direct seawater electrolysis for a sustainable offshore Hydrogen future: A critical review and perspective

Applied Energy, Год журнала: 2025, Номер 384, С. 125468 - 125468

Опубликована: Фев. 3, 2025

Язык: Английский

---

Enhanced electrocatalytic performance of double-shell structured NixFe2-xP/NiFe2O4 for oxygen evolution reaction and anion exchange membrane water electrolysis

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 109, С. 254 - 263

Опубликована: Фев. 11, 2025

Язык: Английский

---

Pt quantum dots coupled with NiFe LDH nanosheets for efficient hydrogen evolution reaction at industrial current densities

Microstructures, Год журнала: 2025, Номер 5(2)

Опубликована: Фев. 26, 2025

Developing efficient and economical electrocatalysts for hydrogen generation at high current densities is crucial advancing energy sustainability. Herein, a self-supported evolution reaction (HER) electrocatalyst rationally designed prepared on nickel foam through simple two-step chemical etching method, which consists of Pt quantum dots (PtQDs) coupled with nickel-iron layered double hydroxide (NiFe LDH) nanosheets (named PtQDs@NiFe LDH). The characterization results indicate that the introduction PtQDs induces more oxygen vacancies, thereby optimizing electronic structure LDH. This modification enhances conductivity accelerates adsorption/desorption kinetics intermediates in LDH, ultimately resulting exceptional catalytic performance HER large densities. Specifically, LDH delivers 500 2000 mA·cm-2 remarkably low overpotentials 92 252 mV, respectively, markedly outperforming commercial Pt/C (η500 = 190 η2000 436 mV). Moreover, when employing NiFe precursor catalyst as anode cathode, an overall water electrolysis system, only 1.66 V 2.02 are required to achieve mA·cm-2, while maintaining robust stability 200 h. study introduces feasible approach developing industrial-scale

Язык: Английский

---

Phase Electronic Structure Tuning via Pt, P–Doped Ni₄Mo‐Implanted Ti₄O₇ for Highly Efficient Water Splitting and Mg/Seawater Batteries

Small, Год журнала: 2024, Номер 20(30)

Опубликована: Фев. 26, 2024

Abstract Fine‐tuning nanoscale structures, morphologies, and electronic states are crucial for creating efficient water‐splitting electrocatalysts. In this study, a method structure engineering to enhance overall water splitting in corrosion‐resistant electrocatalyst matrix by integrating Pt, P dual‐doped Ni 4 Mo electrocatalysts onto Ti O 7 nanorod grown on carbon cloth (Pt, P–Ni Mo–Ti /CC) is introduced. By optimizing platinum phosphorus concentrations 1.18% 2.42%, respectively, low overpotentials achieved remarkably: 24 mV at 10 mA cm −2 the hydrogen evolution reaction 290 20 oxygen 1.0 m KOH. These values approach or surpass those of benchmark Pt–C IrO 2 catalysts. Additionally, /CC bifunctional displays cell potentials across various mediums, maintaining excellent current retention (96% stability after 40 h mimic seawater ) demonstrating strong corrosion resistance suitability electrolysis. As cathode magnesium/seawater batteries, it achieves power density 7.2 mW maintains 100 h. Density functional theory simulations confirm that P, Pt doping‐assisted modifications augment electrical conductivity active sites hybrid

Язык: Английский

---

Crystalline Ru-Decorated MOF-Derived Amorphous CoMo-LDH Nanosheet Arrays as Bifunctional Catalysts for Overall Natural Seawater Electrolysis

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown

Опубликована: Сен. 24, 2024

The construction of an amorphous/crystalline heterostructure MOF-derived electrocatalysts offers intriguing pathway to improve hydrogen production efficiency, but it has received little attention. Here, we report crystalline Ru-decorated amorphous CoMo-LDH nanosheet arrays as highly active and robust bifunctional for natural seawater electrolysis. Benefiting from the abundant interfaces, Ru-CoMo-LDH catalyst exhibits excellent activity toward OER under fresh seawater, in particular; requires only 257 406 mV overpotential at 10 500 mA cm

Язык: Английский

---

Engineered Nickel–Iron Nitride Electrocatalyst for Industrial‐Scale Seawater Hydrogen Production

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 25, 2024

Abstract Seawater electrolysis under alkaline conditions is a crucial technology for sustainable hydrogen production. However, achieving the long‐term stability of electrocatalyst remains significant challenge. In this study, it demonstrated that surface reconstruction transition metal nitride (TMN) can be used to develop highly stable oxygen evolution reaction (OER) electrocatalyst. Rapid introduction phosphate groups (PO 4 3− ) accelerates in situ Ni 3 FeN, generating catalyst, with conductive core and Cl − ‐resistant hydroxide shell demonstrates outstanding performance, maintaining over 2500 h at 1 A cm −2 current density seawater. characterization functional theory (DFT) calculations reveal dynamic active sites, providing insights into mechanisms driving stability. This work not only introduces an efficient approach TMN‐based catalyst design but also advances development durable electrocatalysts industrial‐scale seawater

Язык: Английский

---