Se-Regulated MnS Porous Nanocubes Encapsulated in Carbon Nanofibers as High-Performance Anode for Sodium-Ion Batteries DOI Creative Commons
Pei Liang, Duo Pan, Xiangyun Hu

et al.

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: April 28, 2025

Abstract Manganese-based chalcogenides have significant potential as anodes for sodium-ion batteries (SIBs) due to their high theoretical specific capacity, abundant natural reserves, and environmental friendliness. However, application is hindered by poor cycling stability, resulting from severe volume changes during slow reaction kinetics complex crystal structure. Here, an efficient straightforward strategy was employed in-situ encapsulate single-phase porous nanocubic MnS 0.5 Se into carbon nanofibers using electrospinning the hard template method, thus forming a necklace-like -carbon nanofiber composite (MnS @N-CNF). The introduction of significantly impacts both composition microstructure , including lattice distortion that generates additional defects, optimization chemical bonds, nano-spatially confined design. In situ/ex-situ characterization density functional theory calculations verified this @N-CNF alleviates expansion facilitates transfer Na + /electron. As expected, anode demonstrates excellent sodium storage performance, characterized initial Coulombic efficiency (90.8%), high-rate capability (370.5 mAh g −1 at 10 A ) long durability (over 5000 cycles 5 ). //NVP@C full cell, assembled with 3 V 2 (PO 4 @C cathode, exhibits energy 254 Wh kg can be provided. This work presents novel optimize design materials through structural engineering substitution, while also elucidating underlying mechanisms.

Language: Английский

Cu‐Driven Active Cu2Se@MXene Heterointerface Reconstruction and Co Electron Reservoir Toward Superior Sodium Storage DOI Open Access

Chengxing Lu,

Boyu Li, Mengjie Shi

et al.

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

Published: Jan. 19, 2025

Abstract Heterostructure engineering and active component reconstruction are effective strategies for efficient rapid charge storage in advanced sodium‐ion batteries (SIBs). Herein, sandwich‐type CoSe 2 @MXene composites used as a model to reconstruct new Cu Se@MXene heterostructures by situ electrochemical driving. The MXene core provides interconnected pathways electron ion conduction, while also buffering volumetric expansion stabilize the structure. This reconstructed heterointerface features abundant sodium sites, enhanced Na + adsorption, diffusion kinetics, thus increasing capacity. Moreover, elevated Co valence state during discharge process allows it act an reservoir provide additional supply Se conversion accelerate kinetics. When employed anode SIBs, electrode exhibits high capacity (694 mAh g −1 at 0.1 A ), excellent rate performance (425 20 exceptional durability (437 after 10 000 cycles 5 with 0.0014% decay per cycle). mechanism of is further revealed through ex characterization theoretical calculations. work approach designing conversion‐type anodes SIBs.

Language: Английский

Citations

0
Highly stable cobalt-doped FeSe 2 anodes for unexpectedly fast sodium storage enabled by doping and structure engineering DOI

Dakai Ma,

Ruoxue Qiu,

Hui Zheng

et al.

International Journal of Green Energy, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 11

Published: March 24, 2025

Language: Английский

Citations

0
Anion‐Vacancy Activated Vanadium Sulfoselenide With In‐Plane Heterostructure Enabling Durable and Wide‐Temperature Zinc‐Ion Batteries DOI Creative Commons
Zhonghui Sun, Wei Zheng, Rongkun Zheng

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

Zinc-ion batteries (ZIBs) represent a promising energy-storage device, which has remarkable merits in terms of cost-effectiveness, high safety, and environmental sustainability. Transition metal chalcogenides are emerging cathode materials for ZIBs due to their theoretical capacity large interlayer spacing. Nevertheless, application faces critical challenges sluggish reaction kinetics huge volume variation. Herein, the anion defect engineering strategy one-step situ anchoring vanadium sulfoselenide on V2CTx template (VSSe/V2CTx) in-plane heterostructure with built-in vacancy is proposed by robust interfacial C─Se─V bonds overcome these challenges. The incorporation Se atom into VS2 not only changes V electronic structure enhances intrinsic electrical conductivity VSSe/V2CTx, but also creates more active sites accelerates as confirmed calculations experimental results. Thus, VSSe/V2CTx delivers 114.3 mAh g-1 at 5 A over 15 000 cycles under cryogenic conditions quasi-solid state (QSSZIBs). Furthermore, two QSSZIBs successfully integrated hydrogel strain sensor enabling reliable human motion physiological signal detection, highlighting promise self-powered wearable healthcare monitoring management systems.

Language: Английский

Citations

0
Heterostructure Interface Construction of Zinc/Cobalt Sulfides Derived From Binary Metal–Organic Framework Toward Ultrastable Sodium‐Ion Half/Full Batteries DOI
Yifan Zhang, Jingyu Guo, Xiao Liu

et al.

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

Published: April 1, 2025

Abstract Developing stable material structures and modulating electronic is a good strategy for improving metal‐sulfide electrode conductivity, reducing volume change, enhancing the reaction kinetics of Na + electrodes to achieve electrochemical performance. However, it continues be challenging create hybrid with precisely defined architectures desired compositions. Thus, carbon‐coated Zinc/Cobalt sulfide heterostructure nanorods (ZnS/CoS@C) are prepared by sulfidation treatment binary metal–organic framework in one step. As expected, ZnS/CoS@C displayed an ultra‐long lifespan (403 mAh g −1 at 10 A over 1700 cycles) superior rate performance (653.1/333.3 0.5/30 ). The kinetic analysis Density functional theory calculations show that excellent attributed high pseudocapacitive fast behavior. Na‐ion storage mechanism revealed X‐ray diffraction, ex situ photoelectron spectroscopy, high‐resolution transmission electron microscopy. Furthermore, full cells ZnS/CoS@C//Na 3 V 2 (PO 4 ) @rGO successfully assembled demonstrated impressive (186.3 0.5 600 cycles). This study offers easy way design heterostructured anode materials sodium‐ion batteries.

Language: Английский

Citations

0
Se-Regulated MnS Porous Nanocubes Encapsulated in Carbon Nanofibers as High-Performance Anode for Sodium-Ion Batteries DOI Creative Commons
Pei Liang, Duo Pan, Xiangyun Hu

et al.

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: April 28, 2025

Abstract Manganese-based chalcogenides have significant potential as anodes for sodium-ion batteries (SIBs) due to their high theoretical specific capacity, abundant natural reserves, and environmental friendliness. However, application is hindered by poor cycling stability, resulting from severe volume changes during slow reaction kinetics complex crystal structure. Here, an efficient straightforward strategy was employed in-situ encapsulate single-phase porous nanocubic MnS 0.5 Se into carbon nanofibers using electrospinning the hard template method, thus forming a necklace-like -carbon nanofiber composite (MnS @N-CNF). The introduction of significantly impacts both composition microstructure , including lattice distortion that generates additional defects, optimization chemical bonds, nano-spatially confined design. In situ/ex-situ characterization density functional theory calculations verified this @N-CNF alleviates expansion facilitates transfer Na + /electron. As expected, anode demonstrates excellent sodium storage performance, characterized initial Coulombic efficiency (90.8%), high-rate capability (370.5 mAh g −1 at 10 A ) long durability (over 5000 cycles 5 ). //NVP@C full cell, assembled with 3 V 2 (PO 4 @C cathode, exhibits energy 254 Wh kg can be provided. This work presents novel optimize design materials through structural engineering substitution, while also elucidating underlying mechanisms.

Language: Английский

Citations

0