Applied Catalysis A General, Год журнала: 2024, Номер unknown, С. 120094 - 120094
Опубликована: Дек. 1, 2024
Язык: Английский
Advanced Powder Materials, Год журнала: 2024, Номер 3(6), С. 100246 - 100246
Опубликована: Окт. 5, 2024
Язык: Английский
Процитировано
8
Renewable Energy, Год журнала: 2025, Номер unknown, С. 122943 - 122943
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
1
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Сен. 27, 2024
Abstract In‐depth comprehension and improvement of the sluggish hydrogen evolution kinetics in alkaline media is highly important to enhance activity durability anion exchange membrane water electrolysis (AEMWE) for green production. Herein, a atom‐terminated core–shell PdH@Ru nanobamboos (NBs) developed by synergetic strategy epitaxial growth situ DMF hydrogenation. The synthesized NBs demonstrate exceptional reaction (HER) media, requiring only 14 mV overpotential at 10 mA cm −2 , surpassing those commercial Pt/C (35 mV) H‐free Pd@Ru (37 mV). Furthermore, an AEMWE device using as cathode also achieves current density 1000 − 2 ≈1.80 V 1.0 m KOH 60 °C, with continuous operation 50 h. operando spectroscopic analysis functional theory calculations suggest that insertion into induces tensile strain on Ru surface layer, altering Pd/Ru electronic structure weakening H adsorption, thereby enhancing HER efficiency. bamboo‐like hollow features numerous active sites, which contribute optimization electron/mass diffusion electrolyte. This work provides potential high‐efficiency cathodic electrocatalyst industrial
Язык: Английский
Процитировано
5
Materials Chemistry and Physics, Год журнала: 2025, Номер unknown, С. 130351 - 130351
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159930 - 159930
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Langmuir, Год журнала: 2025, Номер unknown
Опубликована: Фев. 11, 2025
High-performance, cost-effective metal catalysts for alkaline hydrogen evolution reaction (HER) are crucial advancing energy applications. Iron, while affordable and conductive, suffers from excessive adsorption due to its high d-band center, limiting HER efficiency. This study presents a room-temperature synthesis of copper-iron self-supporting electrodes iron microparticles, where the introduction copper significantly improves water dissociation desorption. The electrode achieves low overpotentials 153 431 mV at 10 300 mA cm-2, respectively, with stable performance over 150 h. Notably, this simple method enables direct post-treatment room temperature produce Cu-Fe composite electrodes, demonstrating strong potential practical Furthermore, strategy modulating iron's catalytic not only optimizes efficiency but also offers valuable theoretical guidance design other high-performance catalysts.
Язык: Английский
Процитировано
0
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 26, 2025
Abstract The dissolution and inactivation of anodic oxygen evolution reaction (OER) electrocatalysts remain significant barriers to the development acidic water electrolysis. Here, activity stability BaIrO 3 (BIO) perovskite are enhanced through controlled regulation metal‐oxygen octahedra via B‐site substitution with Co (BICO). During OER process, Ba leads formation highly active IrCoO x nanoparticles on amorphous surface layers BICO. introduction not only increases concentration high‐valence Ir species high but also prevents excessive oxidation by taking over its role during reaction. Theoretical calculations reveal a substantial reduction in energy barrier rate‐determining step (RDS) after doping. BICO‐2 electrocatalyst demonstrates exceptional performance, requiring an overpotential 216 mV achieve current density 10 mA cm −2 , while maintaining continuous operation for 140 h without degradation, boasting number (S‐number) 4.3 × 5 . Additionally, exhibits excellent durability proton exchange membranes (PEM) This work introduces novel approach designing fabricating efficient, long‐lasting electrocatalysts, offering insights advancing electrolysis technologies.
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Апрель 1, 2025
Abstract Developing cost‐effective precious metal electrocatalysts for the hydrogen evolution reaction (HER) is key to realizing economic viability of acidic water electrolysis. Herein, galvanic displacement employed in situ formation bimetallic Pt/Ru deposits on H‐intercalated TiO 2 nanotube arrays. It found that a two‐step procedure yields polydisperse with dominant fraction Ru nanoparticles coated atomic and subnanometric Pt islands. These Pt|Ru nanointerfaces induce charge transfer from Ru, which modulates electronic structure sites accelerated HER kinetics. By varying platinization time second step, balance between exposure catalytically active total number surface achieved. The optimized composite, termed Ru‐30min@Pt‐30min, requires an overpotential 58 mV deliver current density 100 mA cm −2 1.0 m HClO 4 maintains performance stability integrity under prolonged operation. Moreover, it presents 3.5‐fold increase mass activity over Pt/C at η = 80 mV. Theoretical calculations reveal interactions generated by Pt‐modification hydrogenated surfaces provide multiple improved H ads energetics compared pure Ru.
Язык: Английский
Процитировано
0
Journal of Power Sources, Год журнала: 2025, Номер 641, С. 236912 - 236912
Опубликована: Апрель 5, 2025
Язык: Английский
Процитировано
0
Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162421 - 162421
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0