Diatomic Iron with a Pseudo-Phthalocyanine Coordination Environment for Highly Efficient Oxygen Reduction over 150,000 Cycles

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(36), С. 24842 - 24854

Опубликована: Авг. 26, 2024

Atomically dispersed Fe-N-C catalysts emerged as promising alternatives to commercial Pt/C for the oxygen reduction reaction. However, majority of showed unsatisfactory activity and durability due their inferior O-O bond-breaking capability rapid Fe demetallization. Herein, we create a pseudo-phthalocyanine environment coordinated diatomic iron (Fe

Язык: Английский

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Recent achievements in noble metal-based oxide electrocatalysts for water splitting

Materials Horizons, Год журнала: 2025, Номер 12(6), С. 1757 - 1795

Опубликована: Янв. 1, 2025

Noble metal-based oxide electrocatalysts are essential for the development of H 2 production technology by water electrolysis, and this review summarises recent research progress noble metal oxides in field electrolysis.

Язык: Английский

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Regulating the Fe-Nx coordination structure of Fe single-atom catalysts for efficient catalytic degradation of methylparaben

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160462 - 160462

Опубликована: Фев. 1, 2025

Язык: Английский

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MoSe₂/Bi₂Se₃ Heterostructure Immobilized in N‐Doped Carbon Nanosheets Assembled Flower‐Like Microspheres for High‐Rate Sodium Storage

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 12, 2025

Abstract A key challenge for sodium‐ion batteries (SIBs) lies in identifying suitable host materials capable of accommodating large Na + ions while addressing sluggish chemical kinetics. The unique interfacial effects heterogeneous structures have emerged as a critical factor accelerating charge transfer and enhancing reaction Herein, MoSe 2 /Bi Se 3 composites integrated with N‐doped carbon nanosheets are synthesized, which spontaneously self‐assemble into flower‐like microspheres (MoSe @N‐C). Electrochemical measurements density functional theory (DFT) calculations underscore the significant improvement kinetics enabled by structural advantages composite. Remarkably, nanosheet morphology provides more storage sites, uniformly distributed heterostructure can optimize carrier concentration alter electric field distribution, thereby facilitating enabling additional sodium ion storage. When employed an anode material SIBs, @N‐C exhibits exceptional performance, delivering reversible capacity 521.4 mAh g −1 at 1 800 cycles 407.9 10 over 1400 cycles. Notably, be fully restored to its initial level after cycling high current densities. This study, combining experimental theoretical insights, novel perspective on interface engineering advance practical application SIBs.

Язык: Английский

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Breaking symmetry for better catalysis: insights into single-atom catalyst design

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This review examines the strategies of symmetry breaking (charge/coordination/geometric) in single-atom catalysts to regulate active site electronic structures, greatly enhancing catalytic performance.

Язык: Английский

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FeCo-SN-C dual-site catalyst with high stability and oxygen reduction activity

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 118, С. 417 - 425

Опубликована: Март 20, 2025

Язык: Английский

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Boosting Iodine Redox Kinetics by Nickel‐Cobalt Diatomic Electrocatalyst for Zinc‐Iodine Batteries

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 24, 2025

Abstract Single‐atom catalysts (SACs) offer an efficient solution of a well‐defined structure‐activity relationship for boosting iodine redox kinetics and suppressing the shuttle effect in zinc‐iodine (Zn‐I 2 ) batteries, but further upgradation their electrocatalytic activity is still constrained to date. Herein, atomically dispersed transition‐metal electrocatalysts comprised heteronuclear nickel‐cobalt diatomic sites anchored on porous carbon nanosheets (Ni‐Co‐DA/PCNs) are proposed by novel interlayer‐confinement pyrolysis strategy. Thereinto, NiCoAl‐layered double hydroxides employed as 2D topological structure induce confined polycondensation aromatic hydrocarbon precursors, ions simultaneously trapped hierarchical frameworks oxygen‐containing species. The detailed experimental investigations combined with situ Raman spectroscopy reveal that Ni‐Co‐DA/PCNs electrocatalyst M‐O 4 pair high specific surface area capable facilitating adsorption fast conversion polyiodides, thereby accelerating I /I ‒ protecting zinc anode. Consequently, assembled Zn‐I batteries Ni‐Co‐DA/PCNs/I cathode exhibit discharge capacity 216.7 mAh g ‒1 at 0.2 A excellent rate capability ultralong cycling lifespan over 9000 cycles decay only 0.0018% per cycle, which far superior those Ni/Co SACs. This work provides new insight into design dual‐atom Zn‐halogens batteries.

Язык: Английский

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ZIF-8-derived carbon substrates embedded with atomically dispersed FeN2O2 active sites as bifunctional catalysts for electrochemical carbon dioxide and oxygen reduction

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 124618 - 124618

Опубликована: Сен. 1, 2024

Язык: Английский

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Asymmetric High-Coordination Co-NSP Single-Atom Catalysts with Tailored d-p-Orbital Electron Structure for Efficient Bifunctional Catalyst of Rechargeable Zn-Air Battery Cathodes

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 124889 - 124889

Опубликована: Ноя. 1, 2024

Язык: Английский

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S‐scheme MnO2/Co3O4 sugar‐gourd nanohybrids with abundant oxygen vacancies for efficient visible‐light‐driven CO2 reduction

ChemCatChem, Год журнала: 2024, Номер 16(22)

Опубликована: Авг. 7, 2024

Abstract Converting CO 2 to carbon‐based fuels using solar energy via photocatalysis is a promising approach boost carbon neutrality. However, the solar‐to‐chemical conversion efficiency hampered by interconnected multiple factors including insufficient light absorption, low separation of photogenerated carriers as well complex and sluggish surface reaction kinetics. Herein, we incorporate MnO nanowires Co 3 O 4 hollow polyhedrons with abundant oxygen vacancies (V ) into /Co sugar‐gourd nanohybrids for boosting photoreduction. The not only display strong absorption in visible–near infrared region, but also facilitate terms S‐scheme transfer pathway, supplying electrons reduction reaction. Furthermore, presence V enhances promotes chemical adsorption molecules. In addition, interfacial electronic interaction between contributes activation . Owing synergy pathway , hybrids exhibit greatly enhanced photocatalytic activity towards under irradiation visible comparison bare delivering evolution rate 15.9 umol g −1 h 100 % selectivity.

Язык: Английский

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