Achieving a Quasi‐Solid‐State Conversion of Polysulfides via Building High Efficiency Heterostructure for Room Temperature Na–S Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(14)

Published: Feb. 8, 2024

Abstract The practical application of room temperature sodium–sulfur (RT Na–S) batteries are prevented by the sulfur insulation, severe shuttling effect high‐order sodium polysulfides (Na 2 S n , 4 ≤ 8), and sluggish reaction kinetics. Therefore, designing an ideal host material to suppress shuttle process accelerate redox reactions soluble NaPSs Na /Na is paramount importance for RT Na–S batteries. Here, a quasi‐solid‐state transformation realized building high efficiency MoC‐W C heterostructure in freestanding multichannel carbon nanofibers via electrospinning calcination methods (MoC‐W C‐MCNFs). interlinked micro‐mesoporous structures that can accommodate volume change electrode materials confine entire (restraining process). Meanwhile, with abundant heterointerfaces facilitate electron/ion transport conversion NaPSs. Consequently, S/MoC‐W C‐MCNFs cathode delivers capacity 640 mAh g −1 after 500 cycles at 0.2 A excellent reversible performance 200 ultralong 3500 . What's more, catalytic mechanism (a transformation) proposed confirmed carbonate electrolyte combining experimentally theoretically.

Language: Английский

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Review on suppressing the shuttle effect for room-temperature sodium-sulfur batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155230 - 155230

Published: Aug. 28, 2024

Language: Английский

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Strategies of tailoring 2D MXenes for enhancing Sulfur-Based battery performance

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159924 - 159924

Published: Jan. 1, 2025

Language: Английский

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Ultra-thin SnS2 nanosheets grown on carbon nanofibers with high-performance in sodium-ion energy storage

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154494 - 154494

Published: Aug. 5, 2024

Language: Английский

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Spatial Confinement of Co Nanoparticles in N-Doped Carbon Nanorods for Wastewater Purification via CaSO₃ Activation

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(15), P. 7071 - 7079

Published: April 1, 2024

Spatial confinement of organic pollutants and reactive oxygen species (e.g., SO4•– •OH) with ultrashort lifetime inside the scale chemical theoretical diffusion could provide a greatly promising strategy to overcome limitation mass transfer in heterogeneous Fenton-like oxidation process. Herein, we first reported spatial cobalt nanoparticles N-doped carbon nanorods (Co-NCNRs), by encapsulating Co into nanorods, activating CaSO3 for antibiotic degradation. Compared Na2SO3 NaHSO3, slowly persistently discharge SO32– due its low solubility, thus avoiding depletion generated SO3•– •OH under high concentration sulfite ions. Fully physical characterizations confirmed that 3D hydrogel was mostly transformed nanorod structure Co-NCNRs at 550 °C. atoms were successfully nanoconfined which contributes prevents agglomeration nanoparticles, enhancing catalytic activity stability water decontamination. The performance, kinetic research, influences inorganic anions, pH, degradation mechanism chlortetracycline catalyzed Co-NCNRs/CaSO3 system have been studied detail. This work not only proposed facile method synthesis catalyst but also provided an excellent wastewater treatment.

Language: Английский

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Defect engineering of a TiO₂ anatase/rutile homojunction accelerating sulfur redox kinetics for high-performance Na–S batteries

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(19), P. 8168 - 8176

Published: Jan. 1, 2024

Defect engineering is applied to construct rich oxygen vacancies at the interface of a TiO 2 anatase/rutile homojunction (O V -TRA) enhance sulfur affinity and redox reaction kinetics RT Na–S batteries.

Language: Английский

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In-situ adsorption and catalysis of polysulfide on Janus Ni3Fe−Fe2VO4 heterostructure for Li − S batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 487, P. 150669 - 150669

Published: March 24, 2024

Language: Английский

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Boosting electrocatalytic activity via introducing carbon vacancies and iron defects towards high-performance room-temperature sodium-sulfur batteries

Applied Materials Today, Journal Year: 2025, Volume and Issue: 42, P. 102575 - 102575

Published: Jan. 2, 2025

Language: Английский

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Effective strategies to accelerate the redox kinetics of sulfur cathodes for room-temperature sodium-sulfur batteries

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179118 - 179118

Published: Feb. 1, 2025

Language: Английский

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Low‐Coordinated Ni Single Atom Catalyst with Carbon Coordination for Efficient CO₂ Electroreduction

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Abstract In essence, electrocatalytic CO 2 reduction reaction (CO RR) process for the ‐to‐CO conversion involves two critical reactive intermediates: *COOH and *CO. The trade‐off between adsorption of desorption *CO is challenging Ni‐based RR catalysts. high‐valence Ni site inadequate in supplying sufficient electrons activation subsequent *COOH; conversely, metallic with abundant electron exhibits excessively strong π‐backbonding *CO, thus hindering its desorption. Here, study reports a low‐coordinated single atom catalyst (SAC) characterized by structure carbon coordination, thereby engineering moderate depletion at sites. This SAC achieves high selectivity production up to 99.1% H‐cell. Additionally, it maintains an ultrahigh near 100% across broad range current densities flow cell, coupled sustained stability large 250 mA cm −2 20 h. Both situ characterization results density functional theory (DFT) calculations confirm dual functionality this structure, as enhances while concurrently facilitating greatly promoting overall process.

Language: Английский

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