Next-Generation Green Hydrogen: Progress and Perspective from Electricity, Catalyst to Electrolyte in Electrocatalytic Water Splitting

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

Опубликована: Июль 5, 2024

Green hydrogen from electrolysis of water has attracted widespread attention as a renewable power source. Among several production methods, it become the most promising technology. However, there is no large-scale system currently that can compete with conventional fossil fuel production. Renewable energy electrocatalytic splitting an ideal technology environmental cleanliness protection and good purity, which meet requirements future development. This review summarizes introduces current status by three aspects: electricity, catalyst electrolyte. In particular, present situation latest progress key sources power, catalytic materials electrolyzers for are introduced. Finally, problems generation electrolytic directions next-generation green in discussed outlooked. It expected this will have important impact on field water.

Язык: Английский

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In Situ Growth and Dynamic Transformation of Nickel Chelate Nanoarrays into Reactive Surface Reconstituted Heterostructure for Overall Water Splitting

Advanced Functional Materials, Год журнала: 2024, Номер 34(46)

Опубликована: Июнь 25, 2024

Abstract In this work, self‐derivation and surface reconstruction strategies are innovatively introduced into the synthetic route of metal complex‐derived catalysts. The in situ grown nanorod arrays Ni‐based complex prepared by a simple rapid ligand chelation reaction. Furthermore, highly active heterogeneous electrocatalysts developed mild‐temperature calcination. Attributed to maintained morphology dispersed Ni/Ni(OH) 2 heterojunction sites, as‐prepared electrode exhibits superior hydrogen evolution activity (38.4 mV–10 mA cm −2 ). particular, dynamic during oxygen through Fourier transform infrared Raman spectroscopies observed. reconstructed Ni(OH) /NiOOH activation gives higher performance (369 mV–200 Further density functional theory mechanism studies disclose that contributes adsorption H* activated optimizes formation intermediates evolution.

Язык: Английский

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Structural Modulation of Covalent Organic Frameworks for Efficient Hydrogen Peroxide Electrocatalysis

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(37)

Опубликована: Июнь 25, 2024

Abstract The electrochemical production of hydrogen peroxide (H 2 O ) using metal‐free catalysts has emerged as a viable and sustainable alternative to the conventional anthraquinone process. However, precise architectural design these electrocatalysts poses significant challenge, requiring intricate structural engineering optimize electron transfer during oxygen reduction reaction (ORR). Herein, we introduce novel covalent organic frameworks (COFs) that effectively shift ORR from four‐electron more advantageous two‐electron pathway. Notably, JUC‐660 COF, with strategically charge‐modified benzyl moieties, achieved continuous high H yield over 1200 mmol g −1 h for an impressive duration 85 hours in flow cell setting, marking it one most efficient non‐pyrolyzed reported date. Theoretical computations alongside situ infrared spectroscopy indicate markedly diminishes adsorption OOH* intermediate, thereby steering towards desired Furthermore, versatility was demonstrated through its application electro‐Fenton reaction, where efficiently rapidly removed aqueous contaminants. This work delineates pioneering approach altering pathway, ultimately paving way development highly effective electrocatalysts.

Язык: Английский

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ZIF‐67/ZIF‐8 and its Derivatives for Lithium Sulfur Batteries

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 22, 2024

Abstract Lithium–sulfur batteries (LSBs), renowned for their superior energy density and the plentiful availability of sulfur resources, are progressively emerging as focal point forthcoming storage technology. Nevertheless, they presently confront fundamental challenges including insulation its discharge product, lithium polysulfides (LiPSs) shuttle phenomenon, growth dendrites. Zeolite imidazole framework materials (ZIFs), particularly ZIF‐8 ZIF‐67, significant members metal–organic frameworks (MOFs) family. Owing to high porosity, exceptional adsorption capacity, structural tunability, straightforward synthesis process, these have demonstrated unique application potential in field LSBs. This review initially provides a comprehensive summary developmental status associated with Subsequently, it delves into an in‐depth analysis distinctive properties strategies ZIFs, particular emphasis on well composites derivatives. The systematically categorizes innovative examples design cathode structures optimization separators It also presents forward‐looking perspective insights future trajectory ZIF‐67 materials, informed by latest research advancements field.

Язык: Английский

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From Single-atom to Bi-atom and Ordered Multi-atom: Not Just a Number Changing for Electrocatalysis

Chemical Research in Chinese Universities, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Язык: Английский

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Enhanced Hydrogen Evolution Reaction Using Biomass-Activated Carbon Nanosheets Derived from Eucalyptus Leaves

Materials, Год журнала: 2025, Номер 18(3), С. 670 - 670

Опубликована: Фев. 3, 2025

Carbonaceous-based metal-free catalysts are promising aspirants for effective electrocatalytic hydrogen generation. Herein, we synthesized mesoporous-activated carbon nanosheets (ELC) from biomass eucalyptus leaves through KOH activation. The microstructure, structural, and textural characteristics of the prepared materials were characterized by FE-SEM, Raman, XRD, BET measurements. high temperature (700 °C) KOH-activated ELC exhibited an interconnected nanosheet morphology with a large specific surface area (1436 m2/g) mesoporosity. ELC-700 catalyst excellent HER performance low overpotential (39 mV at 10 mA/cm2), durability, Trivial Tafel slope (36 mV/dec) in 0.5 M H2SO4 electrolyte. These findings indicate new approach developing biomass-derived electrocatalysts substantially efficient green production.

Язык: Английский

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Recent advances in core–shell structured noble metal-based catalysts for electrocatalysis

Rare Metals, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

Язык: Английский

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Construction of Ni–P/TiO2 Schottky heterojunction via photo-deposition to enhance photocatalytic hydrogen evolution activity

Applied Physics Letters, Год журнала: 2025, Номер 126(5)

Опубликована: Фев. 3, 2025

Photocatalytic hydrogen evolution (PHE) is sustainable and environmentally friendly. Titanium dioxide (TiO2) commonly chosen as a photocatalyst of PHE due to its non-toxicity, robust stability, superior photocatalytic activity. However, the efficacy TiO2 restricted by rapid electron–hole pair recombination, limited electron mobility, sluggish surface reactions. To address these issues, we have synthesized Ni–P alloy onto (Ni–P/TiO2) using safe efficient photo-deposition method, thereby constructing Schottky heterojunction photocatalyst. The construction significantly reduces recombination rates photoinduced pairs enhances charge transfer within Additionally, incorporation increases density oxygen vacancies, providing abundant active sites for reduction reaction. metallic properties improve overall light absorption capacity. As result, Ni–P/TiO2 exhibits exceptional production capability. When mass ratio 12 wt. %, rate reaches maximum value at 1654.2 μmol g−1 h−1. Furthermore, functional theory calculations substantiate that formation an internal electric field between facilitates migration carrier separation. This investigation provides promising strategy TiO2-based heterojunctions performance.

Язык: Английский

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Locally-doped MoS2 monolayer with in-plane bifunctional heterostructure toward overall water splitting

Rare Metals, Год журнала: 2025, Номер unknown

Опубликована: Фев. 18, 2025

Язык: Английский

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Laser Ultrafast Confined Alloying of Sub‐5 nm RuM (M = Cu, Rh, and Pd) Particles on Carbon Nanotubes for Hydrogen Evolution Reaction

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Thermodynamic immiscibility is a challenge for intermetallic alloying of sub-5 nm Ru-based alloys, which are excellent electrochemical catalysts water splitting. In this study, nanosecond laser ultrafast confined (LUCA) proposed to break the immiscible-to-miscible transition limit in synthesis carbon nanotubes (CNTs) supported bimetallic RuM (M = Cu, Rh, and Pd) alloy nanoparticles (NPs). The non-noble metal Cu with varying atomic ratios RuCu alloys appealing owing low price cost-effective large-scale practical applications. Benefiting from synergistic effect resultant H/OH binding energy alteration, Ru95Cu5/CNTs display electrocatalytic alkaline hydrogen evolution reaction (HER) activity an overpotential 17 mV Tafel slope 28.4 dec-1 at 10 mA cm-2, high robustness over long-term 5000 cyclic voltammetry cycles. performance much better than LUCA-synthesized CNTs-supported Ru86Rh14, Ru89Pd11, Ru, NPs catalysts, commercial benchmark 20% Pt/C, other mainstream including wet chemistry-synthesized RuRh particles (overpotential 25 mV, 47.5 mVdec-1) RuCu/CNTs 39 mV) synthesized using flash Joule heating method, indicating great potential LUCA screening new classes HER catalysts.

Язык: Английский

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