Construction of N-doped C@MoS2 heteroshell with the yolk of Sn nanoparticles as high-performance anodes for sodium-ion batteries

Mao, Peiyuan; Wang, Yong; Xiao, Pandeng; Zhang, Wen; Rao, Shun; Wang, Zhi

doi:10.1016/j.jallcom.2021.162157

Cited by 13 publications

(14 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In comparison with the most reported VS 4 and other anode materials for sodium-ion batteries, the 3D hierarchical self-assembled architectures of the hollow VS 4 nanospheres show fast sodium insertion/desertion kinetics and the ultrathin nanosheets avoid the difficulty of sodium ions embedding into the bulk material. Thus, the hollow VS 4 nanospheres show the best electrochemical performances among these materials (Figure g and Table S2) and demonstrate a great potential for commercial application. ,− Figure h shows that a maximum specific capacity of 1288.9 mAh g –1 at current density of 2 A g –1 can be gradually achieved at the 257th cycle after rapid activation, and the reversible capacity can be maintained at 1129.6 mAh g –1 after 1000 cycles with 87.6% capacity retention. Figure S21 is composed of four controlled samples.…”

Section: Resultsmentioning

confidence: 95%

Ammonium-Modified Synthesis of Vanadium Sulfide Nanosheet Assemblies toward High Sodium Storage

et al. 2022

View full text Add to dashboard Cite

The weak van der Waals interactions of the one-dimensional (1D) chainlike VS4 crystal structure can enable fast charge-transfer kinetics in metal ion batteries, but its potential has been rarely exploited in depth. Herein, a thermodynamics-driven morphology manipulation strategy is reported to tailor VS4 nanosheets into 3D hierarchical self-assembled architectures including nanospheres, hollow nanospheres, and nanoflowers. The ultrathin VS4 nanosheets are generated via 2D anisotropic growth by the strong driving force of coordination interaction from ammonium ions under microwave irradiation and then evolve into 3D sheet-assembled configurations by adjusting the thermodynamic factors of temperature and reaction time. The as-synthesized VS4 nanomaterials present good electrochemical performances as the anode materials for sodium-ion batteries. In particular, the hollow VS4 nanospheres show a specific capacity of 1226.7 mAh g–1 at 200 mA g–1 current density after 100 cycles. The hierarchical nanostructures with large specific surface area and structural stability can overcome the difficulty of sodium ions embedding into the bulk material interior and provide more reactive materials at the same material mass loading compared with other morphologies. Both experiment and DFT calculations suggest that VS4 nanosheets reduce reaction kinetic impediment of sodium ion in battery operating. This work demonstrates a way of the morphological design of 2D VS4 nanosheets and application in sodium ion storage.

show abstract

Section: Resultsmentioning

confidence: 95%

Ammonium-Modified Synthesis of Vanadium Sulfide Nanosheet Assemblies toward High Sodium Storage

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In the first cathodic scan, the broad reduction peak at approximately 1.1 V corresponds to the insertion of Na + into the interlayers of MoS 2 (MoS 2 + xNa + + xe− → NaxMoS 2 ) and the irreversible generation of the solid–electrolyte interphase (SEI) film. In the first oxidation scan, an outstanding anodic peak was observed at approximately 1.75 V as a result of the oxidation of Mo to MoS 2 [ 14 , 22 ]. The large irreversibility in the first cycle can be ascribed to the formation of an SEI layer.…”

Section: Resultsmentioning

confidence: 99%

“…Zheng at al [ 29 ] prepared Sn-MoS 2 -C@C Microspheres with a reversible capacity of 360 at 1A/g. Mao et al [ 14 ] prepared MoS 2 /Sn/carbon electrodes and the reversible capacity was found as 300 mAh/g at 2 A/g whereas flexible MoS 2 @Ge/CNFs delivered a reversible capacity of 320 mAh/g at the high current rate of 2 A/g. Mao et al [ 14 ] prepared MoS 2 /Sn/carbon electrodes and the reversible capacity was found as 300 mAh/g at 2 A/g whereas flexible MoS 2 @Ge/CNFs delivered a reversible capacity of 320 mAh/g at the high current rate of 2 A/g.…”

Section: Resultsmentioning

confidence: 99%

“…A promising fabrication method is to design hierarchical nanostructures with two or more active components. For instance, Mao et al [ 14 ] prepared carbon@MoS 2 with Sn nanoparticles and reported improved electrochemical properties with a high reversible capacity of 350 mAh/g.…”

Section: Introductionmentioning

confidence: 99%

“…MoS 2 is a promising anode for SIBs because of its considerable theoretical capacity (673 mAh g −1 ) and large lattice spacing (0.62 nm). Moreover, the MoS 2 –carbon heterointerface offers fast diffusion of ions and electrons [ 14 , 15 ]. In this study, Ge was dispersed in flexible carbon nanofibers to improve the electronic conductivity and prevent agglomeration.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Flexible MoS2 Anchored on Ge-Containing Carbon Nanofibers

Yanılmaz

Kim

2022

Nanomaterials

View full text Add to dashboard Cite

Germanium is a promising anode material for sodium-ion batteries (SIBs) because of its high theoretical specific capacity, high ion diffusivity, and rate capability. However, large volume changes and pulverization deteriorate the cycling performance. In this study, flexible electrospun germanium/carbon nanofibers (Ge/CNFs) were prepared via electrospinning followed by heat treatment. MoS2 nanoparticles were subsequently anchored on the flexible Ge/CNFs via hydrothermal synthesis. Flexible MoS2 anchored on Ge/CNFs (MoS2@Ge/CNFs) was used as a self-standing binder-free anode in an SIB. Because of the high electronic conductivity of CNFs and the many active sites of MoS2 nanoparticles, a high initial capacity of over 880 mAh/g was achieved at a current density of 0.1 A/g. Moreover, the flexible binder-free MoS2@Ge/CNFs exhibited an excellent C-rate performance with a reversible capacity of over 300 mAh/g at a current density of 2 A/g. Therefore, we demonstrated that flexible binder-free MoS2@Ge/CNFs are a promising electrode candidate for a high-performance rechargeable battery.

show abstract

Sn-doped induced stable 1T-WSe2 nanosheets entrenched on N-doped carbon with extraordinary half/full sodium/potassium storage performance

et al. 2023

View full text Add to dashboard Cite

Construction of N-doped C@MoS2 heteroshell with the yolk of Sn nanoparticles as high-performance anodes for sodium-ion batteries

Cited by 13 publications

References 65 publications

Ammonium-Modified Synthesis of Vanadium Sulfide Nanosheet Assemblies toward High Sodium Storage

Ammonium-Modified Synthesis of Vanadium Sulfide Nanosheet Assemblies toward High Sodium Storage

Flexible MoS2 Anchored on Ge-Containing Carbon Nanofibers

Sn-doped induced stable 1T-WSe2 nanosheets entrenched on N-doped carbon with extraordinary half/full sodium/potassium storage performance

Contact Info

Product

Resources

About