Separator decoration with nitrogen-doped porous carbon derived from resin for highly efficient polysulfides confinement in lithium sulfur batteries

Journal of Energy Storage, Год журнала: 2025, Номер 112, С. 115566 - 115566

Опубликована: Янв. 28, 2025

Язык: Английский

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Nitrogen/phosphorus co-doped honeycomb carbon decorated carbon nanotubes as a free-standing cathode for high performance lithium‑sulfur batteries

Journal of Energy Storage, Год журнала: 2025, Номер 113, С. 115698 - 115698

Опубликована: Фев. 6, 2025

Язык: Английский

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Medium-entropy Li1.2Ni0.13Co0.13Mn0.54O2 cathode with enhanced electrochemical performance by microstructural stabilization and surface modification

Journal of Energy Storage, Год журнала: 2025, Номер 115, С. 115997 - 115997

Опубликована: Фев. 27, 2025

Язык: Английский

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Regulating of Lithium‐Ion Dynamic Trajectory by Ferromagnetic CoF₂ to Achieve Ultra‐Stable Deep Lithium Deposition Over 10000 h

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 4, 2024

Abstract Currently, the realization of controllable Li electrodeposits to further extend cycling life metal anode remains challenging. Herein, it is reported that carbon nanosheet array‐loaded ferromagnetic CoF 2 nanoparticles on cloth (CC@CoF /C) as an internal micro‐magnetic field source manipulate dynamic trajectory + deposition via magnetohydrodynamic effect. This approach ensures uniform lithium‐ion distribution and improves deep plating capacity, achieving a prolonged cycle dendrite‐free anode. Finite element simulations, in situ characterizations, electrochemical tests confirm magnetic not only guides migration through Lorentz force prevent dendritic growth but also due conversion LiF‐rich solid electrolyte interphase during electroplating. Meanwhile, CC@CoF /C‐based half‐cell operates stably over 10 000 h at 1 mA cm −2 with low 7.8 mV overpotential. When matched commercial LiFePO 4 cathode, full cell reveals high capacity 122.96 mAh g −1 C rate after 1000 cycles, retaining 91.95% capacity. The proposed strategy can be effectively expanded adapted investigate behavior wide range anodes, offering versatile robust analytical framework for addressing diverse metal‐based systems.

Язык: Английский

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Direct Observation of Hybridization Between Co 3d and S 2p Electronic Orbits: Moderating Sulfur Covalency to Pre‐Activate Sulfur‐Redox in Lithium–Sulfur Batteries

Advanced Science, Год журнала: 2024, Номер unknown

Опубликована: Дек. 27, 2024

Abstract Lithium–sulfur batteries (LSBs) offer high energy density and environmental benefits hampered by the shuttle effect related to sluggish redox reactions of long‐chain lithium polysulfides (LiPSs). However, fashion modification d ‐band center in separators is still ineffective, wherein mechanism understanding always relies on theoretical calculations. This study visibly probed evolution Co 3 during charge discharge using advanced inverse photoemission spectroscopy/ultraviolet spectroscopy (IPES/UPS), which offers reliable evidence are consistent well with This, coupled situ Raman X‐ray diffraction (XRD) electrochemical data, co‐evidences a novel pre‐activating S LSBs: LiPSs desert/insert C‐N matrixes within series Co@NCNT‐based separators. The insight pre‐activation discovered that downshifts hybridized 2 p orbitals LiPSs, giving rise more pronounced covalency thus accelerating conversion S₈. Benefiting from these advantages, optimized LSB possesses minimal decay rate 0.0058% after 200 cycles at 10 C. provides new insights into mechanisms supports conventional models center's impact performance.

Язык: Английский

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The role of MXene and MXene-based composite in enhancing lithium-sulfur battery performance

Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 114112 - 114112

Опубликована: Фев. 1, 2025

Язык: Английский

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MXene-Ce-BTC heterostructure derived from Ce metal-organic framework for enhancing adsorption and catalytic capabilities of lithium-sulfur battery

Journal of Power Sources, Год журнала: 2025, Номер 635, С. 236533 - 236533

Опубликована: Фев. 17, 2025

Язык: Английский

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Active MXene‐Based Electrode Interface Chemistry for High Performance Li–S Battery: Design Strategies and Prospects

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 16, 2025

Abstract Lithium‐sulfur (Li–S) battery with high capacity and energy density is a promising next‐generation storage device. However, the shuttle effect of polysulfides causes low utilization sulfur side reactions at electrode interface. The electrode/electrolyte interface determines chemical activity electrochemical reversibility as well cycling stability battery. Therefore, ideal in Li–S depends on loading, fast ion diffusion, effective active intermediates, uniform deposition lithium anode. MXene two dimension layer structure, good conductivity, abundant terminal groups can serve carrier to load sulfur, anchor polysulfides, accelerate transfer. This review summarizes three strategies MXene‐based interfaces including host interface, functional separator anode based principles challenges In addition, interfacial regulation application materials focus process are also presented. Finally, further prospective discussed.

Язык: Английский

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rGO@MoS2 as the host-separator modifier with efficient polysulfides trapping and fast Li+ diffusion for lithium-sulfur batteries

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1002, С. 175491 - 175491

Опубликована: Окт. 1, 2024

Язык: Английский

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Double catalysis of Co9Se8-Ni3Se4 heterogeneous dual-chamber core-shell Achieves high conversion of polysulfides

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 682, С. 1164 - 1174

Опубликована: Дек. 6, 2024

Язык: Английский

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