CoFe alloy nanodots coordinated g-C3N4 nanosheets for advanced Li–S batteries through synergetic regulation of stable lithium deposition and accelerated polysulfide conversion

Materials Today Chemistry, Год журнала: 2025, Номер 45, С. 102654 - 102654

Опубликована: Март 21, 2025

Язык: Английский

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Strengthened d–p Orbital Hybridization on Metastable Cubic Mo₂C for Highly Stable Lithium–Sulfur Batteries

ACS Nano, Год журнала: 2024, Номер unknown

Опубликована: Дек. 13, 2024

Suppressing the lithium polysulfide (LiPS) shuttling as well accelerating conversion kinetics is extremely crucial yet challenging in designing sulfur hosts for lithium–sulfur (Li–S) batteries. Phase engineering of nanomaterials an intriguing approach tuning electronic structure toward regulating phase-dependent physicochemical properties. In this study, a metastable phase δ-Mo2C catalyst was elaborately synthesized via boron doping strategy, which exhibited transfer from hexagonal to cubic structure. The hierarchical tubular δ-Mo2C-decorated N-doped carbon nanotube (δ-B-Mo2C/NCNT) endows fast electron and abundant polar sites LiPSs. First-principles calculations reveal strengthened chemical adsorption capability hybridization between d orbital Mo metal p S atoms LiPSs, contributing higher electrocatalytic activity. Moreover, situ Raman analysis manifests accelerated redox kinetics. Consequently, δ-B-Mo2C/NCNT renders Li–S battery with high specific capacity 1385.6 mAh g–1 at 0.1 C superior rate property 606.3 4 C. Impressively, satisfactory areal 6.95 cm–2 achieved under loading 6.8 mg cm–2. This work has gained research significance design

Язык: Английский

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Nano-Arrayed Cu2S@MoS2 Heterojunction SERS Sensor for Highly Sensitive and Visual Detection of Polystyrene in Environmental Matrices

Talanta, Год журнала: 2025, Номер 292, С. 127934 - 127934

Опубликована: Март 12, 2025

Язык: Английский

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3D Printed Electrode Structures and Materials for Rechargeable Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Abstract In recent years, secondary batteries have emerged as a hot research area, with electrodes being one of the key components that significantly impact battery performance. However, traditional coating‐type electrode sheets, which limitations in terms energy and power density, can no longer satisfy current demands for batteries. 3D printing technology, known its low cost, simple operation, rapid prototyping, ease customization, has garnered widespread attention. By applying technology to optimizing their structure design, it is possible create more active sites ion/charge transport channels, thereby enhancing electrochemical performance Herein, this paper reviews currently commonly used storage technologies standards ink formulation. A variety representative printed structures optimization strategies are also listed. addition, materials use, ranging from 0D 3D, covered, including synthesis methods, morphology, contributions It anticipated review will provide valuable insights into rapidly developing field.

Язык: Английский

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Recent Advances in 3D Printing Technologies for Lithium‐Sulfur Batteries

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Lithium‐sulfur (Li–S) batteries have heretofore raised burgeoning interest due to their cost effectiveness and high theoretical energy densities. However, the inherent porous fluffy structure of sulfur impedes path constructing high‐loading electrodes (over 5 mg cm −2 ) for practicability. Furthermore, especially in thick electrodes, challenges like retarded redox kinetics, notorious polysulfide shuttling, wanton electrode expansion seriously give rise low utilization, poor rate performance, unsatisfactory cycling stability. Constructing free‐standing architectures has been demonstrated as an effective strategy tackle aforementioned issues Li–S batteries. As emerging technique, 3D printing (3DP) shows merits rapidly fabricating precise microstructures with controllable loadings rationally organized porosity. For realm, 3DP offers optimized Li + /e − transmission well‐dispersed electrocatalysts, which achieves efficient regulation guarantees favorable performance. This review covers design principle preparation printable inks, practical applications manufacture self‐supported frameworks (such cathodes, anodes, separators) Challenges perspectives on potential future development are also outlined.

Язык: Английский

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Enhancing aqueous zinc-ion battery performance through dual-mechanism strategy

Chemical Communications, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Ammonium molybdenum sulfide hydrate (N-MoS x ) nanospheres with a dual mechanism of Zn 2+ insertion/de-insertion and the breakage/formation disulfide bonds are reported.

Язык: Английский

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Integrated design of polysulfide shuttling and lithium dendrite suppressing framework: In2O3-In2S3 embedded carbon cloth for lithium-sulfur full batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161241 - 161241

Опубликована: Март 1, 2025

Язык: Английский

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3D-Printed Co-doped MoS2/Ti3C2Tx/S Cathode with Accelerated Adsorption and Conversion of Lithium Polysulfides for Advanced Lithium-Sulfur Batteries

Materials Today Energy, Год журнала: 2025, Номер unknown, С. 101877 - 101877

Опубликована: Апрель 1, 2025

Язык: Английский

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Programmable Solid Electrolyte Interphase Enables Simultaneous Optimization of Electrochemical Performance and Self‐Discharge of Lithium Sulfur Batteries under Practical Conditions

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 18, 2025

Abstract The development of lithium–sulfur batteries is impeded by their suboptimal electrochemical performance and significant self‐discharge under practical conditions, especially at high sulfur‐to‐host ratios low electrolyte‐to‐sulfur ratios. Under these improving necessitates accelerating the polysulfides conversion, while reducing entails inhibiting same conversion (disproportionation reaction, a key contributor to self‐discharge). Herein, address this challenging contradiction, an imprisoning strategy designed that utilizes programmable solid electrolyte interphase (SEI) layers formed only on outer surface TiO 2−x coated hollow carbon spheres (TiO @C). @C chosen primarily because it supports regulated SEI growth upon simple voltage control, leveraging different formation potential C, its conductivity catalytic property ensure sulfur reaction kinetics. This functions effectively even conditions. exposed internal provides abundant effective sites (as dense barrier) prevents from migrating out spheres, performance. These soluble polysulfides, being confined within easily reach saturation concentrations during storage, disproportionation reaction. Consequently, wrapped @C/sulfur cathodes exhibit both self‐discharge. work new attempt achieve above simultaneous optimization without compromise.

Язык: Английский

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Modulating carrier-catalyst heterointerfaces to boost catalytic polysulfide conversion in lithium-sulfur batteries

Energy Materials, Год журнала: 2025, Номер 5(9)

Опубликована: Май 16, 2025

Enhancing the catalytic activity of sulfur cathode hosts is critical for suppressing shuttle effect and accelerating polysulfides redox kinetics in lithium-sulfur (Li-S) batteries. However, efficient polysulfide adsorption catalysis conversion rely on synergistic interactions between catalyst supporting carrier, particularly optimizing site density electron/ion transport rates. Herein, we modulate carrier-catalyst heterointerface to enhance conversion. Metallic 1T-phase MoS2 nanospheres are uniformly dispersed onto nitrogen-doped graphene (N-G) sheets, forming a composite host material (1T-MoS2/N-G) Li-S N-G serves as both conductive substrate charge transfer support loading, while 1T-MoS2, rich sites, functions an electrocatalyst, promoting ion diffusion, adsorbing soluble polysulfides, their transformation into solid lithium sulfide. Benefiting from these structural advantages, S/1T-MoS2/N-G exhibits initial capacity 1,296.8 mAh g-1 at 0.2 C demonstrates outstanding cycle stabilization, with decay rate only 0.015% per over 500 cycles 1.0 C. Even under demanding conditions, such loading 6.5 mg cm-2 lean electrolyte 7 µL mg-1, provides areal 7.2 retains 4.8 after 100 cycles. These findings offer new insights design advanced materials high-performance cathodes broader electrocatalytic applications.

Язык: Английский

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