Construction of PdCu Alloy Decorated on the N-Doped Carbon Aerogel as a Highly Active Electrocatalyst for Enhanced Oxygen Reduction Reaction

Gels, Год журнала: 2025, Номер 11(3), С. 166 - 166

Опубликована: Фев. 26, 2025

Fuel cells/zinc–air cells represent a transformative technology for clean energy conversion, offering substantial environmental benefits and exceptional theoretical efficiency. However, the high cost limited durability of platinum-based catalysts sluggish oxygen reduction reaction (ORR) at cathode severely restrict their scalability practical application. To address these critical challenges, this study explores groundbreaking approach to developing ORR with enhanced performance reduced costs. We present novel Pd3Cu alloy, innovatively modified N-doped carbon aerogels, synthesized via simple self-assembly freeze-drying method. The three-dimensional aerogel-based porous structures provide diffusion channels molecules, excellent electrical conductivity, abundant sites. Pd3Cu@2NC-20% aerogel exhibits remarkable enhancement in activity, achieving half-wave potential 0.925 V, limiting current density 6.12 mA/cm2, long-term stability. Density functional theory (DFT) calculations reveal that electrons tend transfer from Pd atoms neighboring *O, leading an increase negative charge around *O. This, turn, weakens interaction between catalyst surface *O optimizes elementary steps process.

Язык: Английский

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Bifunctional Ni3S2 nanoflake/NiMoO4 nanoneedle composite electrocatalysts for efficient urea oxidation and hydrogen evolution in sustainable water electrolysis

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162044 - 162044

Опубликована: Апрель 1, 2025

Язык: Английский

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Fe₂P/ZnS Heterostructures Supported on N‐Doped Porous Carbon as Efficient Oxygen Reduction Electrocatalysts for High‐Performance Zinc–Air Batteries

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 3, 2025

The development of oxygen reduction reaction (ORR) catalysts with high catalytic activity, stability, and low cost is great significance for the rechargeable zinc-air batteries (ZABs). Designing heterostructures within catalyst can regulate charge distribution to enhance electron transfer rate during process, optimize adsorption oxygen-containing intermediates, resulting in high-performance ORR catalysts. In this study, Fe2P/ZnS supported on N-doped porous carbon (Fe2P/ZnS@NC) are designed fabricated through one-step synthesis via high-temperature pyrolysis. significantly conductivity carbon. electronic structure catalyst, thereby optimizing key intermediate *O at Fe site enhancing performance Fe2P/ZnS@NC, a half-wave potential 0.885 V. Fe2P/ZnS@NC-based ZABs show maximum power density 148.5 mW cm-2, an energy 818.2 mA h g-1, excellent cycling stability (≈800 h), surpassing 40 wt.% Pt/C-based ZABs. above results that play role improving

Язык: Английский

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Mesoporous carbon materials doped with Co, Fe and nitrogen as oxygen reduction reaction electrocatalysts for anion-exchange membrane fuel cell

Electrochimica Acta, Год журнала: 2025, Номер unknown, С. 146226 - 146226

Опубликована: Апрель 1, 2025

Язык: Английский

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Machine-learning-assisted Design of Cathode Catalysts for Metal-Sulfur/Oxygen/Carbon Dioxide Batteries

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104261 - 104261

Опубликована: Апрель 1, 2025

Язык: Английский

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