Recent Advances in Hybrid Seawater Electrolysis for Hydrogen Production

Advanced Materials, Год журнала: 2023, Номер 36(13)

Опубликована: Дек. 24, 2023

Abstract Seawater electrolysis (SWE) is a promising and potentially cost‐effective approach to hydrogen production, considering that seawater vastly abundant SWE able combine with offshore renewables producing green hydrogen. However, has long been suffering from technical challenges including the high energy demand interference of chlorine chemistry, leading electrolyzers low efficiency short lifespan. In this context, hybrid SWE, operated by replacing energy‐demanding oxygen evolution reaction interfering (CER) thermodynamically more favorable anodic oxidation (AOR) or designing innovative electrolyzer cells, recently emerged as better alternative, which not only allows occur in safe energy‐saving manner without notorious CER, but also enables co‐production value‐added chemicals elimination environmental pollutants. This review provides first account recent advances for production. The substitutional AOR various small molecules redox mediators, couple seawater, comprehensively summarized. Moreover, how cell design helps briefly discussed. Last, current future outlook about development technology are outlined.

Язык: Английский

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Crystalline-amorphous heterostructures with assortative strong-weak adsorption pairs enable extremely high water oxidation capability toward multi-scenario water electrolysis

Nano Energy, Год журнала: 2023, Номер 110, С. 108349 - 108349

Опубликована: Март 15, 2023

Язык: Английский

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Recent advances in Ru/Ir-based electrocatalysts for acidic oxygen evolution reaction

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 343, С. 123584 - 123584

Опубликована: Дек. 1, 2023

The electrocatalytic process of water splitting offers a promising approach to produce sustainable hydrogen. However, the slow kinetics oxygen evolution reaction (OER) presents notable challenge, especially in acidic environment proton exchange membrane (PEM) systems. Despite extensive progress made catalyst development for hydrogen production through electrolysis last century, significant advancements have been accomplished. quest OER catalysts that possess both high activity and stability, while also being affordable, continues be challenging. Currently, Ru/Ir-based electrocatalysts are only practical anode available. Therefore, it is crucial explore feasible strategies enhance performance longevity catalysts. This review comprehensive assessment obstacles prospective Additionally, underscores areas research concentration, providing valuable perspectives future endeavors development.

Язык: Английский

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Constructing CoO/Mo₂C Heterostructures with Interfacial Electron Redistribution Induced by Work Functions for Boosting Overall Water Splitting

Small, Год журнала: 2023, Номер 19(49)

Опубликована: Авг. 23, 2023

Space charge transfer of heterostructures driven by the work-function-induced built-in field can regulate electronic structure catalysts and boost catalytic activity. Herein, an epitaxial heterojunction catalyst CoO/Mo2 C with interfacial electron redistribution induced work functions (WFs) is constructed for overall water splitting via a novel top-down strategy. Theoretical simulations experimental results unveil that WFs-induced facilitates from CoO to Mo2 through formed "Co─C─Mo" bond at interface C, achieving redistribution, further optimizing Gibbs free energy primitive reaction step then accelerating kinetics hydrogen evolution (HER). As expected, effects exhibits excellent HER activity only needing overpotential 107 mV achieve 10 mA cm-2 stability 60-h continuous catalyzing. Besides, assembled behaves outstanding performance toward (1.58 V ). This provides possibility designing materials based on arising application in other fields.

Язык: Английский

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Acidic enol electrooxidation-coupled hydrogen production with ampere-level current density

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Июль 14, 2023

Hydrogen production coupled with biomass upgrading is vital for future sustainable energy developments. However, most electrooxidation reactions suffer from high working voltage and low current density, which substantially hinder large-scale industrial applications. Herein, we report an acidic hydrogen system that combined anodic ascorbic acid cathodic evolution. Unlike C-H O-H bonds cleavage slow kinetics in conventional organic oxidation, the highly active enol structure allows ultralow overpotential of only 12 mV@10 mA/cm2 using Fe single-atom catalysts, reaches 1 A/cm2 at 0.75 V (versus reversible electrode) approximately 100% Faraday efficiency production. Furthermore, fabricated two-electrode membrane-free electrolyser delivers density 2 A/[email protected] 60 °C (2.63 kWh/Nm3 H2), requires half electricity consumption water electrolysis (~5 H2). This work provides a new avenue achieving industrial-scale biomass.

Язык: Английский

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Dual-Doped Nickel Sulfide for Electro-Upgrading Polyethylene Terephthalate into Valuable Chemicals and Hydrogen Fuel

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Сен. 11, 2023

Abstract Electro-upcycling of plastic waste into value-added chemicals/fuels is an attractive and sustainable way for management. Recently, electrocatalytically converting polyethylene terephthalate (PET) formate hydrogen has aroused great interest, while developing low-cost catalysts with high efficiency selectivity the central ethylene glycol (PET monomer) oxidation reaction (EGOR) remains a challenge. Herein, high-performance nickel sulfide catalyst electro-upcycling designed by cobalt chloride co-doping strategy. Benefiting from interconnected ultrathin nanosheet architecture, dual dopants induced up-shifting d band centre facilitated in situ structural reconstruction, Co Cl co-doped Ni 3 S 2 (Co, Cl-NiS) outperforms single-doped undoped analogues EGOR. The self-evolved sulfide@oxyhydroxide heterostructure catalyzes EG-to-formate conversion Faradic (> 92%) 91%) at current densities 400 mA cm −2 ). Besides producing formate, bifunctional Co, Cl-NiS-assisted PET hydrolysate electrolyzer can achieve production rate 50.26 mmol h −1 M KOH, 1.7 V. This study not only demonstrates dual-doping strategy to engineer cost-effective electrochemical processes, but also provides green upcycling simultaneous energy-saving production.

Язык: Английский

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Unlocking Efficient Hydrogen Production: Nucleophilic Oxidation Reactions Coupled with Water Splitting

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 10, 2024

Abstract Electrocatalytic water splitting driven by sustainable energy is a clean and promising water‐chemical fuel conversion technology for the production of high‐purity green hydrogen. However, sluggish kinetics anodic oxygen evolution reaction (OER) pose challenges large‐scale hydrogen production, limiting its efficiency safety. Recently, OER has been replaced nucleophilic oxidation (NOR) with biomass as substrate coupled (HER), which attracted great interest. Anode NOR offers faster kinetics, generates high‐value products, reduces consumption. By coupling reaction, can be enhanced while yielding products or degrading pollutants. Therefore, NOR‐coupled HER another new electrolytic strategy after significance realizing development global decarbonization. This review explores potential reactions an alternative to delves into mechanisms, guiding future research in production. It assesses different methods, analyzing pathways catalyst effects. Furthermore, it evaluates role electrolyzers industrialized discusses prospects challenges. comprehensive aims advance efficient economical

Язык: Английский

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Energy-efficient hydrogen generation using multiferroic TbCrO3 nanoparticles via electrocatalysis coupled with hydrazine oxidation and photocatalysis

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 58, С. 717 - 725

Опубликована: Янв. 28, 2024

Язык: Английский

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Separators in aqueous zinc-ion batteries: Interfacial chemistry and optimization strategies

Energy storage materials, Год журнала: 2024, Номер 67, С. 103271 - 103271

Опубликована: Фев. 16, 2024

Язык: Английский

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Selectively nucleotide‐derived RuP on N,P‐codoped carbon with engineered mesopores for energy‐efficient hydrogen production assisted by hydrazine oxidation

SusMat, Год журнала: 2024, Номер 4(1), С. 166 - 177

Опубликована: Фев. 1, 2024

Abstract Integrating hydrogen evolution reaction (HER) with hydrazine oxidation (HzOR) has an encouraging prospect for the energy‐saving production, demanding high‐performance bifunctional HER/HzOR electrocatalyst. Ruthenium phosphide/doped carbon composites have exhibited superior activity toward multiple electrocatalytic reactions. To explore decent water‐soluble precursors containing both N and P elements is highly attractive to facilely prepare metal composites. Herein, as one kind ecofriendly biomolecules, adenine nucleotide was first employed selectively fabricate pure RuP nanoparticles embedded into porous N,P‐codoped carbons (RuP/PNPC) a straightforward “mix‐and‐pyrolyze” approach. The newly prepared RuP/PNPC only requires 4.0 −83.0 mV at 10 mA/cm 2 separately in alkaline HER HzOR, outperforming most of reported electrocatalysts, together outstanding neutral performance. Furthermore, two‐electrode overall splitting exhibit significant power‐efficiency superiority corresponding water voltage difference larger than V, which can be also easily driven by fuel cells solar considerable H generation. Our report innovates N‐ P‐bearing effortlessly synthesize high‐quality RuP/doped composite catalysts, potential universal platform phosphide‐related functional materials.

Язык: Английский

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