Three-dimensional porous NiCoP foam enabled high-performance overall seawater splitting at high current density

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(5), С. 2680 - 2684

Опубликована: Янв. 1, 2024

Three-dimensional porous NiCoP foam supported on Ni is a superb bifunctional electrocatalyst for overall seawater splitting, attaining large current density of 1000 mA cm −2 at low cell voltage 1.97 V with robust stability over 300 hours.

Язык: Английский

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Tungstate Intercalated NiFe Layered Double Hydroxide Enables Long‐Term Alkaline Seawater Oxidation

Small, Год журнала: 2024, Номер 20(28)

Опубликована: Фев. 16, 2024

Abstract Renewable electricity‐driven seawater splitting presents a green, effective, and promising strategy for building hydrogen (H 2 )‐based energy systems (e.g., storing wind power as H ), especially in many coastal cities. The abundance of Cl − seawater, however, will cause severe corrosion anode catalyst during the electrolysis, thus affect long‐term stability catalyst. Herein, oxidation performances NiFe layered double hydroxides (LDH), classic oxygen (O ) evolution material, can be boosted by employing tungstate (WO 4 2– intercalated guest. Notably, insertion WO 2− to LDH layers upgrades reaction kinetics selectivity, attaining higher current densities with ≈100% O generation efficiency alkaline seawater. Moreover, after 350 h test at 1000 mA cm −2 , only trace active chlorine detected electrolyte. Additionally, follows lattice mechanism on .

Язык: Английский

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Heteroanion induced structural asymmetricity centered on Ru sites switches the rate-determining step of acid water oxidation

Energy & Environmental Science, Год журнала: 2024, Номер 17(5), С. 1885 - 1893

Опубликована: Янв. 1, 2024

The intervening Se induces the structural asymmetricity of Ru-S 6 octahedrons and then regulates electronic structure active Ru site, which possesses excellent acid water oxidation performance as an Ir-free catalyst.

Язык: Английский

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Oxalate anions-intercalated NiFe layered double hydroxide as a highly active and stable electrocatalyst for alkaline seawater oxidation

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 662, С. 596 - 603

Опубликована: Фев. 6, 2024

Язык: Английский

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Impressive efficiency of zinc oxide-manganese oxide/MAX composite in two-electrode system for photovoltaic-electrolyzer water splitting

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 689, С. 133599 - 133599

Опубликована: Фев. 28, 2024

Язык: Английский

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Structural evolution and self-reconstruction of nickel hexacyanoferrate Prussian blue analogues for long-lasting ampere-current seawater oxidation

Nano Today, Год журнала: 2024, Номер 58, С. 102454 - 102454

Опубликована: Авг. 23, 2024

Язык: Английский

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Surface-derived phosphate layer on NiFe-layered double hydroxide realizes stable seawater oxidation at the current density of 1 A°cm−2

Nano Research, Год журнала: 2024, Номер 17(7), С. 5786 - 5794

Опубликована: Март 15, 2024

Язык: Английский

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Nickel-Based Anode Electrocatalysts for Hydrogen Production

ACS Materials Letters, Год журнала: 2023, Номер 6(2), С. 466 - 481

Опубликована: Дек. 30, 2023

Hydrogen is praised as a promising carrier of clean energy due to its high calorific combustion value and environmental friendliness. The idea water electrolysis powered by renewable electricity produce high-quality hydrogen has ignited fervor among researchers in pursuit sustainable development. However, the sluggish kinetics traditional anodic oxygen evolution reaction (OER) hinders efficient conversion. Given this, propose new ideas improve conversion efficiency developing alternative types catalysts. This review focuses on nickel-based electrocatalysts, highlighting their recent advancements conventional OER well emerging small molecule electrooxidation reactions. We provide insights into catalyst design synthesis, performance optimization, mechanism exploration, structure–activity relationships. Additionally, we discuss current challenges potential solutions Ni-based anode electrocatalysts for production.

Язык: Английский

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In Situ Reconstructed Layered Double Hydroxides via MOF Engineering and Ru Doping for Decoupled Acidic Water Oxidation Enhancement

Energy & Fuels, Год журнала: 2024, Номер 38(5), С. 4504 - 4515

Опубликована: Фев. 7, 2024

Discovering cost-effective, durable, and economical electrocatalysts for the lattice oxygen- mediated mechanism (LOM)-based oxygen evolution reaction (OER) under acidic conditions is essential advancing commercialization of electrochemical water-splitting devices. In this study, we effectively constructed a distinctive petal-like nanoflake (NFls) structure by introducing ruthenium (Ru) into NiM (M = Fe, Co) metal–organic framework (MOF) on nickel foam (NFo) substrate through straightforward in situ conversion process layered double hydroxides (LDHs). Utilizing unique properties material, Ru-doped NiFe-BDC/NFo exhibited an impressively low overpotential ∼247 mV at current density 10 mA cm–2 when operating environment OER. Most notably, our champion catalysts displayed exceptional long-term stability during continuous operation 20 h 0.5 M H2SO4, positioning them as some top conditions. The catalytic performance Co)-BDC/NFo can be ascribed to introduction Ru LDH MOF. This transformation significantly enhances kinetics facilitates charge transfer, ultimately resulting attainment optimal activity research introduces novel category OER conditions, which has been relatively underexplored.

Язык: Английский

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Recent achievements in selenium-based transition metal electrocatalysts for pH-universal water splitting

Nano Research, Год журнала: 2024, Номер 17(7), С. 5763 - 5785

Опубликована: Май 16, 2024

Язык: Английский

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