Journal of Materials Chemistry A, Год журнала: 2024, Номер unknown
Опубликована: Янв. 1, 2024
Co 2 P/FeP nanosheets prepared by an aerogel-assisted method showed high OER activity in alkaline media thanks to their 2D structure and Co–P/Fe–P charge bridges enhancing electronic interactions.
Язык: Английский
Advanced Materials, Год журнала: 2024, Номер 36(29)
Опубликована: Апрель 29, 2024
Abstract The development of high‐performance electrocatalysts for energy conversion reactions is crucial advancing global sustainability. design catalysts based on their electronic properties (e.g., work function) has gained significant attention recently. Although numerous reviews electrocatalysis have been provided, no such reports function‐guided electrocatalyst are available. Herein, a comprehensive summary the latest advancements in diverse electrochemical applications provided. This includes function‐based catalytic activity descriptors, and both monolithic heterostructural catalysts. measurement function first discussed descriptors various fully analyzed. Subsequently, function‐regulated material‐electrolyte interfacial electron transfer (IET) employed catalyst design, methods regulating optimizing performance discussed. In addition, key strategies tuning function‐governed material‐material IET examined. Finally, perspectives determination, put forward to guide future research. paves way rational efficient sustainable applications.
Язык: Английский
Процитировано
58
Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 124660 - 124660
Опубликована: Сен. 1, 2024
Язык: Английский
Процитировано
30
Advanced Energy Materials, Год журнала: 2024, Номер unknown
Опубликована: Сен. 3, 2024
Abstract Platinum (Pt)‐based compounds are the benchmarked catalysts for hydrogen evolution reaction (HER) but exhibit slow kinetics in alkaline environments. The * OH accumulation on Pt surface can block active sites, affecting proton reduction and water re‐adsorption. Alloying Ruthenium (Ru) with sites significantly modulate adsorption desorption of dissociation intermediates. Choosing suitable supports utilizing metal‐support interaction (MSI) is crucial site optimization. PtRu alloy anchored tungsten oxide (WO 3 ) rich oxygen vacancies (O V prepared through an ultrafast microwave‐assisted approach. Benefiting from coupling effects between alloying MSI, PtRu/WO ‐O exhibits exceptionally high HER activity. In 1 m KOH, KOH + seawater, 0.5 H 2 SO 4 , it requires ultralow overpotentials 9, 26, 6 mV to achieve 10 mA cm −2 respectively. designed catalyst surpasses commercial Pt/C mass activity demonstrates considerable potential intermittent energy integration. Density functional theory reveals that Ru reduces barrier dissociating OH, modulating blockage then promoting overall process. This study offers insights into rapid synthesis non‐carbon supported modulation generation.
Язык: Английский
Процитировано
26
Nano Convergence, Год журнала: 2025, Номер 12(1)
Опубликована: Фев. 6, 2025
Abstract The conversion of electricity into hydrogen (H 2 ) gas through electrochemical water splitting using efficient electrocatalysts has been one the most important future technologies to create vast amounts clean and renewable energy. Low-temperature electrolyzer systems, such as proton exchange membrane electrolyzers, alkaline anion electrolyzers are at forefront current technologies. Their performance, however, generally depends on costs system efficiency, which can be significantly improved by developing high-performance enhance kinetics both cathodic evolution reaction anodic oxygen reaction. Despite numerous active research efforts in catalyst development, performance electrolysis remains insufficient for commercialization. Ongoing innovative an understanding catalytic mechanisms critical enhancing their activity stability electrolyzers. This is still a focus academic institutes/universities industrial R&D centers. Herein, we provide overview state directions H production. Additionally, describe detail technological framework production utilized relevant global companies. Graphical
Язык: Английский
Процитировано
5
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Июнь 26, 2024
Abstract Electrocatalysis represents an efficient and eco‐friendly approach to energy conversion, enabling the sustainable synthesis of valuable chemicals fuels. The deliberate engineering electrocatalysts is crucial improving efficacy scalability electrocatalysis. Notably, occurrence in situ amorphization within has been observed during various electrochemical processes, influencing conversion efficiency catalytic mechanism understanding. Of note, dynamic transformation catalysts into amorphous structures complex, often leading configurations. Therefore, revealing this process understanding function species are pivotal for elucidating structure‐activity relationship electrocatalysts, which will direct creation highly catalysts. This review examines mechanisms behind structure formation, summarizes characterization methods detecting species, discusses strategies controlling (pre)catalyst properties conditions that influence amorphization. It also emphasizes importance spontaneously formed oxidation reduction reactions. Finally, it addresses challenges electrocatalysts. aiming guide efficient, selective, stable reactions, inspire future advancements field.
Язык: Английский
Процитировано
17
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(22), С. 28625 - 28637
Опубликована: Май 20, 2024
Metal node engineering, which can optimize the electronic structure and modulate composition of poor electrically conductive metal–organic frameworks, is great interest for electrochemical natural seawater splitting. However, mechanism underlying influence mixed-metal nodes on electrocatalytic activities still ambiguous. Herein, a strategic design comprehensively demonstrated in mixed Ni Co metal redox-active centers are uniformly distributed within NH2–Fe-MIL-101 to obtain synergistic effect overall enhancement activities. Three-dimensional metallic MOF nanosheet arrays, consisting three different nodes, were situ grown foam as highly active stable bifunctional catalyst urea-assisted A well-defined NH2–NiCoFe-MIL-101 reaches 1.5 cm–2 at 360 mV oxygen evolution reaction (OER) 0.6 295 hydrogen (HER) freshwater, substantially higher than its bimetallic monometallic counterparts. Moreover, electrode exhibits eminent catalytic activity stability seawater-based electrolytes. Impressively, two-electrode alkaline electrolysis cell based needs only 1.56 yield 100 mA cm–2, much lower 1.78 V cells superior long-term current density 80 h.
Язык: Английский
Процитировано
13
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Авг. 2, 2024
Abstract Orbital hybridization is a promising approach to modulating the electronic structure of designed electrocatalysts boost reaction kinetics. In contrast d‐d hybridization, p‐d orbital between p‐block elements and d‐block metals can provide new opportunities modulate properties thus promote catalytic performance. Herein, phosphorus‐doped osmium (P‐Os) catalyst through ultrafast (20 s) microwave plasma engineering. Theoretical calculations verify d‐p P Os, leading modulation d‐band center Os active site. Specifically, neighboring exhibit highest activity, facilitating crucial processes such as H 2 O/H* adsorption dissociation. The overpotential P‐Os in alkaline seawater only 152 mV at 1 A cm −2 , which superior reported electrocatalysts. Moreover, synthesized catalysts are integrated into an anion exchange membrane (AEM) electrolyzer, demonstrating remarkable AEM electrolyzer requires 1.86/2.02 V achieve 500/1000 mA current densities. Then, achieved have great potential for practical electrocatalytic water‐splitting applications.
Язык: Английский
Процитировано
13
Chemistry - An Asian Journal, Год журнала: 2025, Номер unknown
Опубликована: Фев. 4, 2025
Abstract The effective use of metal‐organic framework (MOF)‐based materials in the electrocatalytic hydrogen evolution reaction (HER) relies on understanding their structural and electronic properties. While structure morphology MOF‐derived catalysts significantly impact HER activity, tuning d‐band through modulation has emerged as a key factor optimizing catalytic performance. Techniques such composition tuning, heteroatom doping, surface modification, interface engineering were found to be methods for manipulating configuration and, turn, modulating d‐band. This review systematically explores design strategies by focusing modulation. It provides detailed discussion various – used modulate structure. Furthermore, establishes relationship between Gibbs free energy, modulation, supported both spectroscopic theoretical evidences.
Язык: Английский
Процитировано
1
Nano-Structures & Nano-Objects, Год журнала: 2025, Номер 41, С. 101457 - 101457
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
1
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 7, 2025
Abstract Entropy engineering has proven effective in enhancing catalyst electrochemical properties, particularly for the oxygen evolution reaction (OER). Challenges persist, however, modulating entropy and understanding dynamic reconfiguration of high‐entropy sulfides during OER. In this study, an innovative situ corrosion method is introduced to convert low‐valent nickel on a foam substrate into heazlewoodite (HES/NF), significantly boosting OER performance. By synthesizing series low‐, medium‐, heazlewoodites, intrinsic factors influence surface electrocatalytic activity systematically explored. Employing combination ex characterization techniques, it observed that HES/NF dynamically transforms stable hydroxide oxide (MOOH)‐sulfide composite under conditions. This transition, coupled with lattice distortion, optimizes electrostatic potential distribution, ensuring superior catalytic preventing sulfide deactivation through formation HES‐MOOH species. synergy enables achieve remarkably low overpotentials: 172.0 mV at 100.0 mA cm −2 229.0 extreme current density 300.0 . When paired Pt/C cathode, exhibits rapid kinetics, outstanding stability, exceptional water‐splitting The scalable, cost‐effective approach paves way advanced electrocatalyst design, promising breakthroughs energy storage conversion technologies.
Язык: Английский
Процитировано
1