Pt-decorated spinel MnCo2O4 nanosheets enable ampere-level hydrazine assisted water electrolysis

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 676, С. 13 - 21

Опубликована: Июль 14, 2024

Язык: Английский

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Encapsulation of ruthenium oxide nanoparticles in nitrogen-doped porous carbon polyhedral for pH-universal hydrogen evolution electrocatalysis

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 74, С. 10 - 16

Опубликована: Июнь 12, 2024

Язык: Английский

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Self‐Encapsulation of High‐Entropy Alloy Nanoparticles inside Carbonized Wood for Highly Durable Electrocatalysis

Advanced Materials, Год журнала: 2024, Номер 36(28)

Опубликована: Апрель 26, 2024

High-entropy alloy nanoparticles (HEAs) show great potential in emerging electrocatalysis due to their combination and optimization of multiple elements. However, synthesized HEAs often exhibit a weak interface with the conductive substrate, hindering applications long-term catalysis energy conversion. Herein, highly active durable electrocatalyst composed quinary (PtNiCoFeCu) encapsulated inside activated carbonized wood (ACW) is reported. The self-encapsulation achieved during Joule heating synthesis (2060 K, 2 s) where naturally nucleate at defect sites. In meantime, catalyze deposition mobile carbon atoms form protective few-layer shell rapid quenching process, thus remarkably strengthening stability between ACW. As result, HEAs@ACW shows not only favorable activity an overpotential 7 mV 10 mA cm

Язык: Английский

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Engineering active sites on N, S co-doped carbon matrix-encapsulated Ni-modified Co9S8 nanoparticles enabling efficient urea electrooxidation

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 685, С. 331 - 341

Опубликована: Янв. 18, 2025

Язык: Английский

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Review of electrospinning technology of photocatalysis, electrocatalysis and magnetic response

Journal of Materials Science, Год журнала: 2024, Номер 59(24), С. 10623 - 10649

Опубликована: Июнь 1, 2024

Язык: Английский

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Regulating Reconstruction‐Engineered Active Sites for Accelerated Electrocatalytic Conversion of Urea

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(36)

Опубликована: Июнь 14, 2024

Reconstruction-engineered electrocatalysts with enriched high active Ni species for urea oxidation reaction (UOR) have recently become promising candidates energy conversion. However, to inhibit the over-oxidation of brought by valence state Ni, tremendous efforts are devoted obtaining low-value products nitrogen gas avoid toxic nitrite formation, undesirably causing inefficient utilization cycle. Herein, we proposed a mediation engineering strategy significantly boost high-value formation help close loop employment economy. Specifically, platinum-loaded nickel phosphides (Pt-Ni

Язык: Английский

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Generating highly active oxide-phosphide heterostructure through interfacial engineering to break the energy scaling relation toward urea-assisted natural seawater electrolysis

Journal of Energy Chemistry, Год журнала: 2024, Номер 97, С. 687 - 699

Опубликована: Июль 14, 2024

Язык: Английский

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Synthesis of polymetallic oxide nanoarrays as efficient hydrogen evolution reaction electrocatalyst for alkaline seawater and urea splitting

Fuel, Год журнала: 2024, Номер 372, С. 132281 - 132281

Опубликована: Июнь 21, 2024

Язык: Английский

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Self‐Encapsulated Ni Nanoparticles on Delignified Wood Carbon for Efficient Urea‐Assisted Hydrogen Production

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 8, 2024

Abstract Developing efficient, low‐cost electrocatalysts for industrial‐level hydrogen production remains a significant challenge. Here lattice‐distorted Ni nanoparticles (NPs) encapsulated within nitrogen‐doped carbon shell on delignified wood (Ni‐NC@DWC) are constructed through chitosan‐induced assembly and the pyrolysis process. Experimental theoretical results indicate that lattice distortion due to strong metal‐support interactions, boosts electron transfer reaction intermediate adsorption/desorption, enhancing both urea oxidation (UOR) evolution (HER). Interestingly, active center 3+ ‐O is dynamically cyclically generated during UOR. When utilized as self‐standing electrode in an alkaline electrolyte, Ni‐NC@DWC exhibits low potentials of 24 mV 1.244 V at 100 mA cm −2 HER UOR, respectively. Moreover, achieves ultrasmall cell voltage 1.13 urea‐assisted water splitting can operate stably over 1000 h. Furthermore, when it self‐assembled anion exchange membrane (AEM) electrolyzer, requires only 1.62 2000 industrial operates 150 h without degradation, confirming highly attractive economical, sustainable, scalable production.

Язык: Английский

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Manipulating d‐Band Center of Ru Sites in Branched RuO₂ Nanofibers Enables Significantly Enhanced Alkaline Overall Water Splitting Performance

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 9, 2024

Abstract Although ruthenium dioxide (RuO 2 ) is an efficacious oxygen evolution reaction (OER) catalyst in acidic media, its performance alkaline conditions subpar and it also ineffective for hydrogen (HER) common electrolytes. Here, effective phosphorus (P)‐doping strategy introduced to manipulate the d ‐band center of (Ru) sites, attenuating adsorption energy HER intermediates lowering barrier OER, thereby significantly accelerating both OER performance. The representative 10%P‐RuO nanofibers (NFs) presents ultralow overpotential 177.9 mV at 1 A cm −2 long‐term stability 300 h m KOH toward HER, greatly exceeding those benchmark platinum (Pt)/C catalyst. Moreover, NFs exhibits exceptional with a low 250 10 mA (η desirable 150 , which far better than commercial RuO many other typical previously reported catalysts. Additionally, overall water electrolytic cell using as anode cathode necessitates working voltage 1.52 V demonstrates over 100 outperforming electrolysis cells.

Язык: Английский

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