International Journal of Hydrogen Energy, Год журнала: 2025, Номер 124, С. 263 - 270
Опубликована: Апрель 8, 2025
Язык: Английский
Journal of Energy Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
6
Advanced Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 10, 2025
Abstract Designing heterogeneous interface to enhance the kinetics for electrocatalysts is a highly efficient but challenging pathway toward hydrogen evolution reaction (HER) in water electrolysis. Herein, coupling of CeO 2 quantum dots onto porous Ru aerogel through interfacial Ru‐O‐Ce bridge proposed construct ‐Ru as superior HER electrocatalyst with ultra‐low overpotentials. In situ characterizations and theoretical calculations reveal electron distribution at boost bonding sites, faster adsorption dissociation sites kinetics. Furthermore, employed excellent cathodes both acidic alkaline electrolyzers ampere‐level current density stably operated over 500 hours. Thus, synergistic effect tunes catalytic mechanism reinforces activity, realizing generation
Язык: Английский
Процитировано
2
Chemical Reviews, Год журнала: 2024, Номер 124(23), С. 13095 - 13098
Опубликована: Дек. 11, 2024
Язык: Английский
Процитировано
13
ACS electrochemistry., Год журнала: 2025, Номер unknown
Опубликована: Фев. 7, 2025
Anion exchange membrane water electrolysis (AEMWE) is an emerging technology for the low-cost production of hydrogen. However, efficiency and durability AEMWE devices currently insufficient to compete with other low-temperature technologies. The porous transport layer (PTL) a critical cell component that remains relatively unoptimized AEMWE. In this study, we demonstrate device performance significantly affected by morphology composition PTL. For Ni fiber-based PTLs ∼2 μm Co3O4 oxygen evolution reaction catalyst layer, decreasing pore size porosity resulted in 20% increase current density at 2 V 1 M KOH supporting electrolyte. Alloy even lower had higher performance; particular, stainless steel PTL gave 80% relative Ni. Without Co3O4, alloy still demonstrated high activity, indicating material was catalytically active. characterization electrode electrolyte after testing indicated also underwent restructuring corrosion processes may limit long-term stability. This study demonstrates design improved important area focus achieve targets.
Язык: Английский
Процитировано
1
Nanoscale, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Rice leaves inspired the development of an anisotropic microstructured gas conduction electrode featuring rapid desorption and transfer bubbles to achieve highly efficient hydrogen production.
Язык: Английский
Процитировано
1
Small Methods, Год журнала: 2025, Номер unknown
Опубликована: Фев. 16, 2025
Abstract Electrocatalytic water splitting for hydrogen generation plays a crucial role in promoting the energy transition and achieving goals of carbon neutrality. Nevertheless, context electrolysis, generated bubbles have an adverse impact on consumption mass transfer efficiency. To address this challenge, variety strategies are investigated to accelerate bubble detachment transport. It is utmost significance summarize those facilitating advancement electrolysis performance. In review, comprehensive account presented enhancing performance through behavior management. First, electrolyte discussed. Then, optimized interactions between electrode surface introduced, which focus reducing adhesion forces implementing other forces. Next, dynamic bubbling deformable catalysts discussed, such as fern‐ caterpillar‐like catalysts. Following that, bubble‐bubble coalescence proved be beneficial earlier departure compared buoyancy effect alone. Finally, outlooks future development efficient removal enhanced The review aims deepen comprehension stimulate management strategies, thereby further electrolysis.
Язык: Английский
Процитировано
1
Industrial & Engineering Chemistry Research, Год журнала: 2025, Номер 64(9), С. 5087 - 5098
Опубликована: Фев. 21, 2025
Gas bubble adhesion, a ubiquitous phenomenon in electrochemical gas-evolving reactions, reduces the hydrogen evolution reaction (HER) activity water electrolysis. Understanding dynamics of gas detachment and its dependence on force balance is crucial for manipulating departure, but it remains insufficiently investigated. Here, we found that differ markedly between fluidizable stationary electrocatalysts, with electrocatalysts minimizing adhesion showing 37-fold increase HER rate constant. This enhancement attributed to accelerated driven by fluidization effect electrocatalyst particles. Specifically, transition from marks shift flat particulate model, introducing promoting effects arising particle movement spin-induced centrifugal collision-triggered coalescence. Consequently, measured approaches intrinsic value. work highlights as an effective strategy eliminate thereby exposing nearly all active sites electrocatalytic reactions.
Язык: Английский
Процитировано
1
ACS electrochemistry., Год журнала: 2025, Номер unknown
Опубликована: Фев. 21, 2025
Язык: Английский
Процитировано
1
ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown
Опубликована: Фев. 26, 2025
Gas evolution plays an important role in water electrolysis, as sluggish bubble dynamics lead to blockage of active sites, reduced catalytic performance, and even detachment the catalysts. In this work, we present a strategy fabricate highly rough three-dimensional (3D)-printed Ni (3DPNi) electrodes with ordered flow channel structures, achieving exceptional performance through enhanced transport dynamics. The surfaces enhance hydrophilic aerophobic properties, suppressing coalescence accelerating structures 3DPNi serve efficient channels effectively prevent trapping, facilitating rapid Collectively, these features optimize dynamics, significantly boosting for electrolysis. Computational fluid simulations visual experiments validate improved When coated NiFe-LDH (NiFe-LDH/3DPNi), low overpotential 238 mV is required deliver 100 mA cm-2 OER. overall splitting, NiFe-LDH/3DPNi || Pt plate setup requires cell voltage 1.86 V achieve 1 A demonstrates excellent stability over h at current density, indicating strong potential practical applications.
Язык: Английский
Процитировано
1
ACS Energy Letters, Год журнала: 2025, Номер unknown, С. 837 - 844
Опубликована: Янв. 17, 2025
Exploring a general method for constructing uniform heterostructures with sub-5 nm crystallites and dense interfaces is crucial yet challenging advancing water electrocatalysis. Herein, bottom-up cocrystallization strategy, involving in situ transformation of amorphous Ni–P through gas–solid reactions, proposed to synthesize series nickel-based heterojunctions on carbon cloth (CC). Thereinto, interface-wealthy NiS2-Ni2P/CC densely packed 3–4 demonstrates superb catalytic performance both hydrogen oxygen evolution. The electrolyzer merely requires cell voltages 1.79 1.89 V propel overall splitting currents 200 400 mA cm–2, respectively, outperforming the vast majority reported heterojunctions. Theoretical calculations reveal that charge redistribution electronic structure modulation optimize evolution pathways at NiS2 Ni2P sides interfaces, respectively. Moreover, hybridization distributed heterointerfaces offers abundant active sites electrocatalysis, pioneering an extendable approach advanced heterojunction catalysts green production.
Язык: Английский
Процитировано
0