Dual role of sulfur doping in NiCr LDH for water oxidation: Promoting surface reconfiguration and lattice oxygen oxidation

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 351, С. 123994 - 123994

Опубликована: Апрель 24, 2024

Язык: Английский

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Fe-S dually modulated adsorbate evolution and lattice oxygen compatible mechanism for water oxidation

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

Опубликована: Сен. 27, 2024

Язык: Английский

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Recent achievements in noble metal-based oxide electrocatalysts for water splitting

Materials Horizons, Год журнала: 2025, Номер 12(6), С. 1757 - 1795

Опубликована: Янв. 1, 2025

Noble metal-based oxide electrocatalysts are essential for the development of H 2 production technology by water electrolysis, and this review summarises recent research progress noble metal oxides in field electrolysis.

Язык: Английский

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Enhancing the Electrocatalytic Oxidation of 5-Hydroxymethylfurfural Through Cascade Structure Tuning for Highly Stable Biomass Upgrading

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

Опубликована: Авг. 22, 2024

Abstract Electrocatalytic 5-hydroxymethylfurfural oxidation reaction (HMFOR) provides a promising strategy to convert biomass derivative high-value-added chemicals. Herein, cascade is proposed construct Pd–NiCo 2 O 4 electrocatalyst by Pd loading on Ni-doped Co 3 and for highly active stable synergistic HMF oxidation. An elevated current density of 800 mA cm –2 can be achieved at 1.5 V, both Faradaic efficiency yield 2,5-furandicarboxylic acid remained close 100% over 10 consecutive electrolysis. Experimental theoretical results unveil that the introduction atoms modulate local electronic structure Ni/Co, which not only balances competitive adsorption OH – species, but also promote Ni 3+ species formation, inducing high indirect activity. We have discovered incorporation facilitates 2+ pre-oxidation electrophilic OH* generation contribute direct process. This work new approach design advanced upgrading.

Язык: Английский

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Synergistic Effect of P and Co Dual Doping Endows CuNi with High–Performance Hydrogen Evolution Reaction

Small, Год журнала: 2024, Номер unknown

Опубликована: Июнь 3, 2024

Abstract The rational design of highly active and durable non‐noble electrocatalysts for hydrogen evolution reaction (HER) is significantly important but technically challenging. Herein, a phosphor cobalt dual doped copper–nickel alloy (P, Co–CuNi) electrocatalyst with high–efficient HER performance prepared by one‐step electrodeposition method reported the first time. As result, P, Co–CuNi only requires an ultralow overpotential 56 mV to drive current density 10 mA cm −2 , remarkable stability over 360 h, surpassing most previously transition metal‐based materials. It discovered that P doping can simultaneously increase electrical conductivity enhance corrosion resistance, while introduction Co precisely modulate sub‐nanosheets morphology expose more accessible sites. Moreover, XPS, UPS, DFT calculations reveal synergistic effect different dopants achieve optimal electronic structure around Cu Ni, causing down‐shifted d‐band center, which reduces desorption free energy rate‐determining step (H 2 O + e − H* → H OH ) consequently enhances intrinsic activity. This work provides new cognition toward development excellent activity spurs future study other NiCu‐based

Язык: Английский

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Built-in electric field construction and lattice oxygen activation for boosting alkaline electrochemical water/seawater oxidation

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 154279 - 154279

Опубликована: Июль 25, 2024

Язык: Английский

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Facet Engineering of Cobalt Manganese Oxide for Highly Stable Acidic Oxygen Evolution Reaction

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 22, 2024

Abstract Developing cost‐effective, robust, and durable catalysts for water oxidation in acidic conditions remains a significant challenge the practical application of proton exchange membrane electrolyzers. Cobalt‐based spinel catalysts, known their effective oxygen evolution reaction (OER) activity environments, are promising alternatives to costly iridium‐based catalysts. However, is often limited by poor stability under corrosive oxidative potential. Here it demonstrated that doping Co 2 MnO 4 with Ni effectively regulates structural electronic properties enabling stable operation over 285 h at 100 mA cm −2 0.5 m H SO . This enhancement primarily due increased exposure (400) facet, result supported theoretical studies. The electrolysis (PEMWE) performance Ni(5%)Co further demonstrates its potential, achieving 1 A − cell voltage 2.3 V, minimal degradation 500 study not only provides insights into design advanced OER through heteroatoms but also offers pathway enhance sustainability economic viability applications.

Язык: Английский

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Bimetallic ZnCo-MOF derived porous Ir-doped cobalt oxides for water oxidation with improved activity and stability

Inorganic Chemistry Frontiers, Год журнала: 2024, Номер 11(15), С. 4876 - 4885

Опубликована: Янв. 1, 2024

This study proposes a precise base-etching process to prepare MOF-derived Ir-doped ZnCo oxides as electrocatalysts with advantages of improved porous nanostructures and in situ formed oxygen vacancies.

Язык: Английский

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Triggering lattice oxygen in in-situ evolved CoOOH for industrial-scale water oxidation

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 363, С. 124838 - 124838

Опубликована: Ноя. 19, 2024

Язык: Английский

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I Single‐Atom Doped P‐Rich CoP_n Nanocluster@CoP with Enhanced HER

Small, Год журнала: 2024, Номер unknown

Опубликована: Май 30, 2024

Constructing I single-atom (I

Язык: Английский

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