Facile and Scalable Preparation of a MoS<sub>2</sub>/Carbon Nanotube Nanocomposite Anode for High-Performance Lithium-Ion Batteries: Effects of Carbon Nanotube Content

Nguyen, Quoc Hai; Kim, Il Tae; Yoo, In Sang; Hur, Jaehyun

doi:10.1166/jnn.2019.16154

Cited by 16 publications

(5 citation statements)

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“…However, the presence of porous carbon does not effectively improve the discharge capacity of the composite, which is what needs to be addressed. Hai et al [ 13 ] prepared MoS 2 /carbon nanotube composites by a high-energy mechanical grinding method and found that the discharge-specific capacity and cycling capacity retention of the materials were significantly improved when the mass ratio of molybdenum disulfide to carbon nanotubes was 1:2, the first discharge capacity was as high as 1703 mAh/g at a current density of 100 mA/g, and the capacity retention was around 85% after 70 cycles. The introduction of MoS 2 effectively improves the discharge capacity, and carbon nanotubes can act as a bridge between the layers of molybdenum disulfide, solving the drawback that lithium ions cannot be efficiently transported between the composite layers.…”

Section: Introductionmentioning

confidence: 99%

Monodisperse MoS2/Graphite Composite Anode Materials for Advanced Lithium Ion Batteries

Liu

et al. 2023

Molecules

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Traditional graphite anode material typically shows a low theoretical capacity and easy lithium decomposition. Molybdenum disulfide is one of the promising anode materials for advanced lithium-ion batteries, which possess low cost, unique two-dimensional layered structure, and high theoretical capacity. However, the low reversible capacity and the cycling-capacity retention rate induced by its poor conductivity and volume expansion during cycling blocks further application. In this paper, a collaborative control strategy of monodisperse MoS2/graphite composites was utilized and studied in detail. MoS2/graphite nanocomposites with different ratios (MoS2:graphite = 20%:80%, 40%:60%, 60%:40%, and 80%:20%) were prepared by mechanical ball-milling and low-temperature annealing. The graphite sheets were uniformly dispersed between the MoS2 sheets by the ball-milling process, which effectively reduced the agglomeration of MoS2 and simultaneously improved the electrical conductivity of the composite. It was found that the capacity of MoS2/graphite composites kept increasing along with the increasing percentage of MoS2 and possessed the highest initial discharge capacity (832.70 mAh/g) when MoS2:graphite = 80%:20%. This facile strategy is easy to implement, is low-cost, and is cosmically produced, which is suitable for the development and manufacture of advance lithium-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Monodisperse MoS2/Graphite Composite Anode Materials for Advanced Lithium Ion Batteries

Liu

et al. 2023

Molecules

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“…Single-walled (SWCNTs) or multi-walled carbon nanotubes (MWCNTs) have attracted considerable attention as supporting conducting materials for the cathodes or anodes of batteries owing to their outstanding mechanical and electrical properties (Figure 1) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The density of carbon nanotubes (CNTs) considerably influences the performance of the cathode or anode, with a higher density corresponding to superior battery efficiency [20][21][22][23][24]. To achieve a high density of CNTs in a limited volume, CNTs must be dispersed in a processing solvent without severe agglomeration or aggregation [25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Research Trends on the Dispersibility of Carbon Nanotube Suspension with Surfactants in Their Application as Electrodes of Batteries: A Mini-Review

et al. 2022

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In the battery field, carbon nanotubes (CNTs) attract much attention due to their potential as a supporting conducting material for anodes or cathodes. The performance of cathodes or anodes can be optimized by introducing densely packed CNTs, which can be achieved with high dispersibility. The efficiency of CNT usage can be maximized by enhancing their dispersibility. An effective technique to this end is to incorporate surfactants on the surface of CNTs. The surfactant produces a surface charge that can increase the zeta potential of CNTs, thereby preventing their agglomeration. Additionally, surfactants having long chains of tail groups can increase the steric hindrance, which also enhances the dispersibility. Notably, the dispersibility of CNTs depends on the type of surfactant. Therefore, the results of dispersibility studies of CNTs involving different surfactants must be comprehensively reviewed to enhance the understanding of the effects of different surfactants on dispersibility. Consequently, this paper discusses the effect of different types of surfactants on the dispersibility of CNTs and presents several perspectives for future research on dispersibility enhancement.

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“…Despite these advantages, Ge anodes face a major disadvantage pertaining to poor cycling because of the 300% volume variation during repeated electrochemical process [ 23 , 24 ]. In this regard, effectual strategies are needed to provide structural stability for the composites by generating effective buffer phases and preventing nanoparticle agglomerations [ 8 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ]. Among these, titanium carbide (TiC) could be used to fabricate an outstanding structural barrier, with its high conductivity and hardness [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

GeTe-TiC-C Composite Anodes for Li-Ion Storage

Kim

2020

Materials

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Germanium boasts a high charge capacity, but it has detrimental effects on battery cycling life, owing to the significant volume expansion that it incurs after repeated recharging. Therefore, the fabrication of Ge composites including other elements is essential to overcome this hurdle. Herein, highly conductive Te is employed to prepare an alloy of germanium telluride (GeTe) with the addition of a highly conductive matrix comprising titanium carbide (TiC) and carbon (C) via high-energy ball milling (HEBM). The final alloy composite, GeTe-TiC-C, is used as a potential anode for lithium-ion cells. The GeTe-TiC-C composites having different combinations of TiC are characterized by electron microscopies and X-ray powder diffraction for structural and morphological analyses, which indicate that GeTe and TiC are evenly spread out in the carbon matrix. The GeTe electrode exhibits an unstable cycling life; however, the addition of higher amounts of TiC in GeTe offers much better electrochemical performance. Specifically, the GeTe-TiC (20%)-C and GeTe-TiC (30%)-C electrodes exhibited excellent reversible cyclability equivalent to 847 and 614 mAh g−1 after 400 cycles, respectively. Moreover, at 10 A g−1, stable capacity retentions of 78% for GeTe-TiC (20%)-C and 82% for GeTe-TiC (30%)-C were demonstrated. This proves that the developed GeTe-TiC-C anodes are promising for potential applications as anode candidates for high-performance lithium-ion batteries.

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Facile and Scalable Preparation of a MoS₂/Carbon Nanotube Nanocomposite Anode for High-Performance Lithium-Ion Batteries: Effects of Carbon Nanotube Content

Cited by 16 publications

References 0 publications

Monodisperse MoS2/Graphite Composite Anode Materials for Advanced Lithium Ion Batteries

Monodisperse MoS2/Graphite Composite Anode Materials for Advanced Lithium Ion Batteries

Research Trends on the Dispersibility of Carbon Nanotube Suspension with Surfactants in Their Application as Electrodes of Batteries: A Mini-Review

GeTe-TiC-C Composite Anodes for Li-Ion Storage

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Facile and Scalable Preparation of a MoS2/Carbon Nanotube Nanocomposite Anode for High-Performance Lithium-Ion Batteries: Effects of Carbon Nanotube Content

Cited by 16 publications

References 0 publications

Monodisperse MoS2/Graphite Composite Anode Materials for Advanced Lithium Ion Batteries

Monodisperse MoS2/Graphite Composite Anode Materials for Advanced Lithium Ion Batteries

Research Trends on the Dispersibility of Carbon Nanotube Suspension with Surfactants in Their Application as Electrodes of Batteries: A Mini-Review

GeTe-TiC-C Composite Anodes for Li-Ion Storage

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Facile and Scalable Preparation of a MoS₂/Carbon Nanotube Nanocomposite Anode for High-Performance Lithium-Ion Batteries: Effects of Carbon Nanotube Content