Sustainable Hydrogen Generation Facilitated through Ethylene Glycol Oxidation in Fresh/Seawater with Cobalt- and Iron-Based Fluorinated Nanosheets

Energy & Fuels, Год журнала: 2024, Номер 38(22), С. 22393 - 22401

Опубликована: Ноя. 5, 2024

Replacing the kinetically sluggish and energy-intensive oxygen evolution reaction (OER) at anode with oxidation of more thermodynamically favorable small organic molecules is a promising strategy for boosting hydrogen production. This study focuses on sustainable generation cathode facilitated by ethylene glycol (EGOR) anode, coupled production value-added formate. For this, we designed deposited cobalt- iron-based fluorinated two-dimensional (2D)-nanosheets (2D-CoFe@OF) through straightforward hydrothermal method onto nickel foam substrate (NF). The resulting 2D-CoFe@OF/NF exhibits an anodic potential that 100 mV lower in 0.5 M EG-added 1.0 KOH electrolyte to achieve benchmark electrolysis current density 10 mA cm–2, compared pure electrolyte. Additionally, assembling two identical 2D-CoFe@OF/NF||2D-CoFe@OF/NF electrode-based electrolyzers resulted 150 reduction operating cell voltage when electrolyzing particularly OER was replaced EGOR, thereby demonstrating significant improvement energy efficiency. Under this condition, electrolyzer demonstrated nearly 100% Faradaic efficiency (HER). Furthermore, practical application system studied EG-seawater suggests its replace freshwater abundant seawater, expanding horizon generation. study, thus, highlights 2D-CoFe@OF nanosheets EGOR advancing green technology toward future.

Язык: Английский

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Surface Corrosion‐Resistant and Multi‐Scenario MoNiP Electrode for Efficient Industrial‐Scale Seawater Splitting

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 30, 2024

Abstract The construction of efficient and durable multifunctional electrodes for industrial‐scale hydrogen production presents a main challenge. Herein, molybdenum‐modulated phosphorus‐based catalytic (Mo‐NiP@NF) are prepared via mild electroless plating. Heteroatoms doping or heterostructures can reconfigure the intrinsic electronic structure pre‐catalyst optimizes key intermediates adsorption. Moreover, (hypo/meta‐)phosphite anions (PO x δ− ) molybdate ions (MoO on electrode surface Mo‐NiP@NF afford resistance to chloride (Cl − corrosion. exhibits ultralow overpotentials 278/550 282/590 mV at 1 A cm −2 during hydrogen/oxygen evolution reaction (HER/OER) in alkaline simulated real seawater, respectively, whereas overall seawater splitting (OWS) reach 1.96 1.97 V cell . Remarkably, maintains stable operation 1500 h OWS. scalability allowing assembly proton exchange membrane (PEM) electrolyzer powered by photovoltaic energy, simulating portable hydrogen‐oxygen respirator provides an oxygen/hydrogen flows 160/320 mL min −1 Expanding further, trace ruthenium‐loaded catalyst sodium borohydride (NaBH 4 hydrolysis achieving generation rate (HGR) 11049.2 g This work strategic innovations optimization solutions economical multi‐scenario green energy conversion materials application.

Язык: Английский

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Mesoporous Co-MoS2 with sulfur vacancies: A bifunctional electrocatalyst for enhanced water-splitting reactions in alkaline media

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 684, С. 158 - 169

Опубликована: Янв. 5, 2025

Язык: Английский

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NiFe-based arrays with manganese dioxide enhance chloride blocking for durable alkaline seawater oxidation

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 684, С. 64 - 72

Опубликована: Янв. 13, 2025

Язык: Английский

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Polyoxometalates Metal–Organic Frameworks-Derived transition metal sulfides with rich interfaces for efficient alkaline oxygen evolution reaction

Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Enhanced supercapacitor performance of NaCrSnNiCeO₂ and NaCuFeNiCeO₂ nanocomposites: a comparative study of electrode materials

New Journal of Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Recent advancements have focused on developing innovative and renewable technologies for energy production storage.

Язык: Английский

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Strategies for Designing Anti‐Chlorine Corrosion Catalysts in Seawater Splitting

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Abstract The seawater splitting for green hydrogen production is emerging as a key research focus sustainable energy. Nevertheless, the inherent complexity of seawater, with its diverse ion composition – especially chloride ions, calcium and magnesium ions poses significant challenges in catalyst design. Designing highly active electrocatalysts that can resist corrosion during still challenge. This article presents an overview fundamental mechanisms explores issues encountered at both cathode anode electrode. then shifts to chlorine anode, examining recent advances preventing strategies. Notably, these design strategies, such anionic passivation layers, corrosion‐resistant metal doping, physical barrier situ phase transition‐driven desalination, decoupled splitting, are comprehensively investigated, all which aim enhance catalytic stability splitting. review concludes outlook on practical applications producing through

Язык: Английский

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Dynamic chloride ion repulsion facilitated by graphene quantum dots for stable electrolytic seawater oxidation

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Challenges and strategies in catalysts design towards efficient and durable alkaline seawater electrolysis for green hydrogen production

Energy Materials, Год журнала: 2025, Номер 5(8)

Опубликована: Март 21, 2025

Seawater electrolysis offers a sustainable solution for hydrogen production by utilizing ocean water as an electrolyte. However, the chlorine evolution reaction (ClER) and accumulation of magnesium calcium precipitates pose significant challenges to efficiency durability. ClER competes with oxygen reaction, reducing output accelerating electrode degradation, while precipitate formation on cathode blocks catalytic sites impairs long-term performance. Anion exchange membrane electrolyzers tackle these leveraging alkaline media suppress enhance catalyst stability. Recent advances in selective catalysts, protective coatings, alternative oxidation reactions further improve selectivity energy efficiency. Additionally, strategies such surface engineering pH modulation mitigate formation, ensuring stable operation. Scaling innovations into anion electrolyzer systems demonstrates their potential industrial-level production. By overcoming fundamental practical barriers, seawater toward commercial deployment future.

Язык: Английский

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Activating FeMoO4 nanosheet arrays by partial nickel substitution for efficient electrocatalytic seawater oxidation

Chemical Communications, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Nickel is integrated into self-supported FeMoO 4 nanosheet arrays by a spontaneous redox reaction, which shows significantly enhanced electrocatalytic OER performance and long-term durability under both alkaline seawater conditions.

Язык: Английский

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