Water electrolysis for hydrogen production: from hybrid systems to self-powered/catalyzed devices

Energy & Environmental Science, Год журнала: 2023, Номер 17(1), С. 49 - 113

Опубликована: Ноя. 7, 2023

This perspective highlights recent advancements in innovative strategies to provide valuable insights into the potential for energy-saving hydrogen production through water electrolysis.

Язык: Английский

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Interfacial Electronic Modulation of Dual-Monodispersed Pt–Ni3S2 as Efficacious Bi-Functional Electrocatalysts for Concurrent H2 Evolution and Methanol Selective Oxidation

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Янв. 11, 2024

Constructing the efficacious and applicable bi-functional electrocatalysts establishing out mechanisms of organic electro-oxidation by replacing anodic oxygen evolution reaction (OER) are critical to development electrochemically-driven technologies for efficient hydrogen production avoid CO

Язык: Английский

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Principles and Design of Biphasic Self‐Stratifying Batteries Toward Next‐Generation Energy Storage

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(20)

Опубликована: Март 8, 2024

Abstract Large‐scale energy storage devices play pivotal roles in effectively harvesting and utilizing green renewable energies (such as solar wind energy) with capricious nature. Biphasic self‐stratifying batteries (BSBs) have emerged a promising alternative for grid owing to their membraneless architecture innovative battery design philosophy, which holds promise enhancing the overall performance of system reducing operation maintenance costs. This minireview aims provide timely review such emerging technology, including its fundamental principles, existing categories, prototype architectures. The challenges opportunities this undergoing research topic will also be systematically highlighted discussed guidance subsequent R&D superior BSBs while conducive bridging gap future practical application.

Язык: Английский

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A self-reactivated PdCu catalyst for aldehyde electro-oxidation with anodic hydrogen production

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Ноя. 14, 2024

The low-potential aldehyde oxidation reaction can occur at low potential (~0 VRHE) and release H2 the anode, enabling hydrogen production with less than one-tenth of energy consumption required for water splitting. Nevertheless, activity stability Cu catalysts remain inadequate due to oxidative deactivation Cu-based materials. Herein, we elucidate reactivation cycle electrocatalyst develop a self-reactivating PdCu catalyst that exhibits significantly enhanced stability. Initially, in-situ Raman spectroscopy confirm involved in electrochemical non-electrochemical reduction. Subsequently, X-ray absorption fine structure reveal Pd component accelerates rate reduction, thereby enhancing electrocatalyst. Finally, bipolar device is assembled utilizing electrocatalyst, which deliver current 400 mA cm−2 0.42 V operate continuously 120 h. This work offers guidance enhance system. A dual-side system more efficient splitting but suffers from issues. Here, authors report operates stably h, offering an alternative solution energy-efficient production.

Язык: Английский

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Manipulating hydrogenation pathways enables economically viable electrocatalytic aldehyde-to-alcohol valorization

Proceedings of the National Academy of Sciences, Год журнала: 2025, Номер 122(8)

Опубликована: Фев. 20, 2025

Electrocatalytic reduction (ECR) of furfural represents a sustainable route for biomass valorization. Unfortunately, traditional Cu-catalyzed ECR suffers from diversified product distribution and industrial-incompatible production rates, mainly caused by the intricate mechanism-performance relationship. Here, we manipulate hydrogenation pathways on Cu introducing ceria as an auxiliary component, which enables mechanism switching proton-coupled electron transfer to electrochemical hydrogen-atom (HAT) thus high-speed furfural-to-furfuryl alcohol electroconversion. Theoretical kinetic analyses show that oxygen-vacancy-rich delivers efficient formation-diffusion-hydrogenation chain H* diminishing adsorption. Spectroscopic characterizations indicate Cu/ceria interfacial perimeter enriches local furfural, synergistically lowering barrier rate-determining HAT step across perimeter. Our catalyst realizes high-rate HAT-dominated electrosynthesis single-product furfuryl alcohol, achieving high rate 19.1 ± 0.4 mol h-1 m-2 Faradaic efficiency 97 1% at economically viable partial current density over 0.1 A cm-2. results demonstrate highly biofeedstock valorization with enhanced techno-economic feasibility.

Язык: Английский

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A Rechargeable Zn‐Redox Battery for Concurrent Electricity Generation and The‐Whole‐Process Chemical Production

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 9, 2025

Abstract The rechargeable Zn‐redox battery represents a promising, efficient, and sustainable energy storage technology. Herein, novel 4‐nitrobenzyl alcohol (4‐NBA)‐assisted battery, driven by NiSe─Cu 2 Se/NF bifunctional electrocatalysts is developed. different redox activities of ─NO ─OH groups in 4‐NBA allow conversion for chemical production during the whole discharge/charge process, maximizing economic value technologies. Detailed charge analyses indicate that internal electric field within Se heterostructure modulates d‐band center, optimizes adsorption/desorption strength intermediates, reduces reaction barriers 4‐NBA. This electrocatalyst enables selective to 4‐aminobenzyl discharge process 4‐nitrobenzoic acid with Faradaic efficiencies above 96%. Consequently, 4‐NBA‐assisted achieves high power density 16.13 mW cm −2 maintains stable yield rate 15.92 µmol h −1 22.84 acid. work presents an appealing strategy integrating the‐whole‐process production, paving way developing multifunctional systems.

Язык: Английский

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Selective Stereoretention of Carbohydrates upon C−C Cleavage Enabling D‐Glyceric Acid Production with High Optical Purity over a Ag/γ‐Al₂O₃ Catalyst

Angewandte Chemie, Год журнала: 2024, Номер 136(22)

Опубликована: Март 15, 2024

Abstract Chiral carboxylic acid production from renewable biomass by chemocatalysis is vitally important for reducing our carbon footprint, but remains underdeveloped. We herein establish a strategy that make use of stereogenic center to achieve rare example D‐glyceric with the highest yield (86.8 %) reported date as well an excellent ee value (>99 %). Unlike traditional asymmetric catalysis, chiral catalysts/additives are not required. Ample experiments combined quantum chemical calculations established origins and catalyst performance. The chirality at C4 in D‐xylose was proved be retained successfully delivered C2 during C−C cleavage. remarkable cooperative‐roles Ag + 0 constructed Ag/γ‐Al 2 O 3 disclosed crucial contributors. responsible low‐temperature activation D‐xylose, while facilitated generation active O* . cooperatively promoted precise cleavage C2−C3 bond, more importantly allowed immediate fast oxidization D‐glyceraldehyde intermediate stabilize acid, thereby inhibiting side reaction induced racemization. This makes significant breakthrough overcoming limitation poor enantioselectivity current chemocatalytic conversion biomass.

Язык: Английский

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Recent Advances in Electrochemical Cell Design for Concurrent Chemical Production and Electricity Generation

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

Опубликована: Май 21, 2024

Abstract Electricity generation and chemical production are both critical cornerstone for modern society. Integrating electricity output high value in an electrochemical system is highly attractive environmentally sustainably. In this review, we summarize the recent advances development of these multifunctional devices (electrocatalytic flow batteries) that could generate chemicals through rational coupling half‐electrode reactions, covering basic principles, device configurations, applications. We also discuss current challenges suggest potential research directions.

Язык: Английский

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Selective Stereoretention of Carbohydrates upon C−C Cleavage Enabling D‐Glyceric Acid Production with High Optical Purity over a Ag/γ‐Al₂O₃ Catalyst

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(22)

Опубликована: Март 15, 2024

Abstract Chiral carboxylic acid production from renewable biomass by chemocatalysis is vitally important for reducing our carbon footprint, but remains underdeveloped. We herein establish a strategy that make use of stereogenic center to achieve rare example D‐glyceric with the highest yield (86.8 %) reported date as well an excellent ee value (>99 %). Unlike traditional asymmetric catalysis, chiral catalysts/additives are not required. Ample experiments combined quantum chemical calculations established origins and catalyst performance. The chirality at C4 in D‐xylose was proved be retained successfully delivered C2 during C−C cleavage. remarkable cooperative‐roles Ag + 0 constructed Ag/γ‐Al 2 O 3 disclosed crucial contributors. responsible low‐temperature activation D‐xylose, while facilitated generation active O* . cooperatively promoted precise cleavage C2−C3 bond, more importantly allowed immediate fast oxidization D‐glyceraldehyde intermediate stabilize acid, thereby inhibiting side reaction induced racemization. This makes significant breakthrough overcoming limitation poor enantioselectivity current chemocatalytic conversion biomass.

Язык: Английский

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Amorphous Fe-O-P electro(pre)catalysts for energy-efficient H2 production coupled with ethylene glycol oxidation

Chemical Communications, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

This study presents the synthesis and electrocatalytic performance of amorphous Fe-O-P nanocages derived from Fe-MOFs for water ethylene glycol (EG) oxidation. Despite structural compositional changes, electrocatalyst in an electrolytic cell with Pt/C shows high activity reduced voltage, efficiently generating H

Язык: Английский

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