Recent Advances of Modified Ni (Co, Fe)-Based LDH 2D Materials for Water Splitting

Molecules, Journal Year: 2023, Volume and Issue: 28(3), P. 1475 - 1475

Published: Feb. 3, 2023

Water splitting technology is an efficient approach to produce hydrogen (H2) as energy carrier, which can address the problems of environmental deterioration and shortage well, well establishment a clean sustainable economy powered by renewable sources due green reaction H2 with O2. The efficiency production water intimately related reactions on electrode. Nowadays, electrocatalysts in are precious metal-based materials, i.e., Pt/C, RuO2, IrO2. Ni (Co, Fe)-based layered double hydroxides (LDH) two-dimensional (2D) materials typical non-precious their advantages including low cost, excellent electrocatalytic performance, simple preparation methods. They exhibit great potential for substitution materials. This review summarizes recent progress LDH 2D splitting, mainly focuses discussing analyzing different strategies modifying towards high performance. We also discuss achievements, electronic structure, catalytic center, process, mechanism. Furthermore, characterization revealing structure mechanism highlighted this review. Finally, we put forward some future perspectives relating design explore advanced catalysts splitting.

Language: Английский

---

Commercial Anion Exchange Membranes (AEMs) for Fuel Cell and Water Electrolyzer Applications: Performance, Durability, and Materials Advancement

Separations, Journal Year: 2023, Volume and Issue: 10(8), P. 424 - 424

Published: July 26, 2023

The utilization of anion exchange membranes (AEMs) has revolutionized the field electrochemical applications, particularly in water electrolysis and fuel cells. This review paper provides a comprehensive analysis recent studies conducted on various commercial AEMs, including FAA3-50, Sustainion, Aemion™, XION Composite, PiperION™ membranes, with focus their performance durability AEM (AEMWE) cells (AEMFCs). discussed highlight exceptional potential these achieving high current densities, stable operation, extended durability. Furthermore, integration innovative catalysts, such as nitrogen-doped graphene Raney nickel, demonstrated significant improvements performance. Additionally, exploration PGM-free Ag/C, for AEMFC cathodes unveiled promising prospects cost-effective sustainable cell systems. Future research directions are identified, encompassing optimization membrane properties, investigation alternative catalyst materials, assessment under diverse operating conditions. findings underscore versatility suitability AEMs paving way advancement efficient environmentally benign energy technologies. serves valuable resource researchers, engineers, industry professionals seeking to enhance applications.

Language: Английский

---

ZnFe layered double hydroxide wrapped metal-organic framework derived cobalt-nitrogen-doped carbon material as peroxymonosulfate activator for ciprofloxacin degradation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154191 - 154191

Published: July 21, 2024

Language: Английский

---

Transition towards renewable nano-carbon-based electrocatalysts in electrochemical and bio-electrochemical technologies

FlatChem, Journal Year: 2024, Volume and Issue: 44, P. 100623 - 100623

Published: Feb. 7, 2024

Language: Английский

---

Recent developments and prospects for engineering first-row transition metal-based catalysts for electrocatalytic NO_x⁻ reduction to ammonia

Inorganic Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 10(18), P. 5225 - 5243

Published: Jan. 1, 2023

First-row transition metal-based electrocatalysts, including Cu, Fe, Co, Ni, and Ti-based for high-efficiency NO x − reduction are reviewed. These electrocatalysts should possess three advantages indicated in the figure above.

Language: Английский

---

Core–shell heterojunction engineering of Co₃O₄/NiFe LDH nanosheets as bifunctional electrocatalysts for efficient reduction of nitrite to ammonia

Inorganic Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 10(15), P. 4510 - 4518

Published: Jan. 1, 2023

Core–shell Co 3 O 4 /NiFe LDH heterostructured nanosheets serve as remarkable NO 2 − RR and OER bifunctional electrocatalysts for high-efficiency low-cost ammonia production.

Language: Английский

---

Defect Engineering of Oxygen Vacancies in Ultrathin NiFe-Layered Double Hydroxides: Insights from Density Functional Theory

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(10), P. 4161 - 4170

Published: March 5, 2024

Defects and interface engineering in layered double hydroxides (LDH) are crucial for the rational search functional electrocatalysts. Despite known enhancement of LDH activity by oxygen vacancies (Ov), a formal exploration how vacancy content influences electrocatalytic properties is lacking. Herein, density theory (DFT) calculations were employed to investigate impact Ov (1–5%) on electronic structure, NiFe LDH, coupling with heteroatom-doped carbon. Calculations revealed that states bandwidth defect levels induced within band gap depend content, influencing adsorption oxygenated species calculated overpotentials evolution reaction (OER), predicted be three times less than defect-free system. Additionally, binding energy highlight heightened interactions between Ov-enriched doped-carbon surfaces, causing electron redistribution Fermi level shifts due doping effects. Carbon modification pyridinic nitrogen phosphorus promising candidate enhanced defective attributed larger interaction alignment its valence underscoring key role carbon support conductivity LDH/carbon composites.

Language: Английский

---

Fueling the future of clean energy with self‐supported layered double hydroxides‐based electrocatalysts: A step toward sustainability

InfoMat, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 5, 2024

Abstract Amid the ongoing transition toward renewable fuels, self‐supported layered double hydroxides (LDHs) are envisioned as propitious electrocatalysts for reinvigorating electrocatalysis realm, thereby facilitating environmental remediation and bolstering sustainable global energy security. Exploiting appealing attributes such unique lamellar structure, abundant active sites, tunable intercalation spacing compositional flexibility, LDHs boast remarkable activity, selectivity stability across diverse energy‐related applications. By virtue of addressing technological time prominence excavating their renaissance, this review first encompasses facile state‐of‐the‐art synthetic approaches alongside intriguing modification strategies, deciphering authentic structure–performance correlations advancing more robust precise catalyst design. Aside from this, heterostructure engineering employing diversified ranges coupling materials is highlighted, to construct ground‐breaking binder‐free LDHs‐based heterostructures endowing with unprecedented activity stability. Subsequently, milestone gained experimental research theoretical modeling frontier in multifarious electrocatalytic applications, including HER, OER, UOR, AOR, seawater splitting other fundamental conversion reactions rigorously unveiled. As a final note, brief conclusion presented an outline future prospects. Essentially, aspires offer enlightenment incite wise inspiration evolution innovative resilient next‐generation catalysts. image

Language: Английский

---

Design and preparation of NiFeV-LDH @ Ni₃S₂/NF with a dense interlayer for enhanced oxygen evolution reaction performance

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 109, P. 201 - 210

Published: Feb. 11, 2025

Language: Английский

---

Binder- and Additive-Free Electrophoretic Deposition of Solvothermally Synthesized Nickel-Cobalt Layered Double Hydroxide for Energy Storage and Conversionbinder- and Additive-Free Electrophoretic Deposition of Solvothermally Synthesized Nickel-Cobalt Layered Double Hydroxide for Energy Storage and Conversion

Published: Jan. 1, 2025

Language: Английский

---