Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160619 - 160619
Опубликована: Фев. 1, 2025
Язык: Английский
Advanced Functional Materials, Год журнала: 2024, Номер 34(37)
Опубликована: Май 6, 2024
Abstract The exploitation of highly activity oxygen evolution reaction (OER) electrocatalysts is critical for the application electrocatalytic water splitting. Triggering lattice mechanism (LOM) expected to provide a promising pathway overcome sluggish OER kinetics, however, effectively enhancing involvement remains challenging. In this study, fabrication B, Fe co‐doped CoP (B, Fe─CoP) nanofibers reported, which serve as efficient electrocatalyst through phosphorization and boronation treatment Fe‐doped Co 3 O 4 nanofibers. Experimental results combined with theoretical calculations reveal that simultaneous incorporation both B can more trigger participation in CoFe oxyhydroxides reconstructed from Fe─CoP compared incorporating only or Fe. Therefore, optimized exhibit superb low overpotentials 361 376 mV at 1000 mA cm −2 alkaline freshwater natural seawater, respectively. present work provides significant guidelines innovative design concepts development following LOM pathway.
Язык: Английский
Процитировано
35
Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(20), С. 11771 - 11820
Опубликована: Янв. 1, 2024
Electrochemical water splitting is one of the promising approaches for generating hydrogen.
Язык: Английский
Процитировано
28
Small, Год журнала: 2024, Номер 20(33)
Опубликована: Март 20, 2024
Transition metal hydroxides have attracted significant research interest for their energy storage and conversion technique applications. In particular, nickel hydroxide (Ni(OH)
Язык: Английский
Процитировано
12
Journal of the American Chemical Society, Год журнала: 2024, Номер 146(39), С. 27090 - 27099
Опубликована: Сен. 21, 2024
In pursuit of advancing the electrooxidation amines, which is typically encumbered by inertness C(sp
Язык: Английский
Процитировано
12
Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown
Опубликована: Окт. 16, 2024
In the context of oxygen evolution reaction (OER), construction high-valence transition metal sites to trigger lattice oxidation mechanism is considered crucial for overcoming performance limitations traditional adsorbate mechanism. However, dynamic during poses significant challenges stability sites, particularly in high-current-density water-splitting systems. Here, we have successfully constructed Co-O-Fe catalytic active motifs cobalt-iron Prussian blue analogs (CoFe-PBA) through plasma bombardment, effectively activating reactivity while sustaining robust stability. Our spectroscopic and theoretical studies reveal that bridged enable a unique double-exchange interaction between Co Fe atoms, promoting formation species as OER centers maintaining low-valence state, preventing its dissolution. The resultant catalyst (CoFe-PBA-30) requires an overpotential only 276 mV achieve 1000 mA cm
Язык: Английский
Процитировано
12
Nano-Micro Letters, Год журнала: 2024, Номер 17(1)
Опубликована: Сен. 26, 2024
Abstract Anion-exchange membrane water electrolyzers (AEMWEs) for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based catalysts. By introducing a third metal into catalysts construct asymmetrical M-NiFe units, the d -orbital and electronic structures can be adjusted, which is an important strategy achieve sufficient oxygen evolution reaction (OER) performance in AEMWEs. Herein, ternary NiFeM (M: La, Mo) featured with distinct units varying -orbitals are reported this work. Experimental theoretical calculation results reveal that doping La leads optimized hybridization between orbital 2 p oxygen, resulting enhanced adsorption strength intermediates, reduced rate-determining step energy barrier, responsible OER performance. More critically, obtained NiFeLa catalyst only requires 1.58 V reach 1 A cm −2 anion exchange electrolyzer demonstrates excellent long-term stability up 600 h.
Язык: Английский
Процитировано
9
Materials Today Energy, Год журнала: 2025, Номер unknown, С. 101796 - 101796
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
1
Energy & environment materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 10, 2025
Electrocatalytic water splitting (EWS) driven by renewable energy is vital for clean hydrogen (H 2 ) production and reducing reliance on fossil fuels. While IrO RuO are the leading electrocatalysts oxygen evolution reaction (OER) Pt (HER) in acidic environments, need efficient, stable, affordable materials persists. Recently, transition‐metal borides (TMBs), particularly metal diborides (MDbs), have gained attention due to their unique layered crystal structures with multicentered boron bonds, offering remarkable physicochemical properties. Their nearly 2D boost electrochemical performance high conductivity a large active surface area, making them well‐suited advanced storage conversion technologies. This review provides comprehensive overview of critical factors splitting, electronic MDbs, synthetic strategies. Furthermore, it examines relationship between catalytic intermediate adsorption as elucidated first‐principle calculations. The also highlights latest experimental advancements MDb‐based addresses current challenges future directions development.
Язык: Английский
Процитировано
1
Korean Journal of Chemical Engineering, Год журнала: 2025, Номер unknown
Опубликована: Фев. 1, 2025
Abstract The expansion of electric vehicles has increased spent lithium-ion batteries (LIBs) containing valuable transition metals. Recycling these materials reduces economic costs and addresses resource shortages. Additionally, metal-based catalysts derived from LIBs can replace expensive noble metal catalysts. This study examines the catalytic performance LiNi 0.8 Co 0.1 Mn O 2 (NCM811) materials, enhanced by adjusting mixed valence states defect structures. Increasing calcination temperature transformed layered structure into spinel rock salt phases, inducing states. Consequently, optimized NCM exhibited improved activity in both oxygen reduction reaction (ORR) evolution (OER). ORR onset potential 0.07 V, while OER overpotential decreased about 26.9%. In a zinc-air battery, catalyst demonstrated discharge capacity 792.1 mAh g⁻ 1 stable over 100 cycles. Operando X-ray absorption spectroscopy (XAS) confirmed as main active site, with Ni enhancing Mn's electron donors acceptors. These findings suggest that calcination-induced structural changes enhance site reactivity, improving performance. Overall, this highlights feasibility repurposing LIB cathode efficient electrocatalysts, thereby viability sustainability development.
Язык: Английский
Процитировано
1
EES Catalysis, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
The Fe uptake influence on Ni-MOF-74 derived oxygen evolution electrocatalysts is studied bridging operando XAS studies with implementation in AEM-WE.
Язык: Английский
Процитировано
1