A three-dimensionally interconnected carbon nanotube/layered MoS2 nanohybrid network for lithium ion battery anode with superior rate capacity and long-cycle-life

Li, Jianyang; Hou, Yang; Gao, Xinfeng; Guan, Dongsheng; Yuan, Chris; Chen, Junhong

doi:10.1016/j.nanoen.2015.05.025

Cited by 156 publications

(86 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, MoS 2 nanosheets easily aggregate owing to their high surface energy, which results in deteriorated catalytic activity and stability. One effective solution is to load MoS 2 nanosheets with support materials [15] such as carbon nanotubes [16], graphene [17], porous metals [18], or TiO 2 nanofibers [19].…”

Section: Nano Resmentioning

confidence: 99%

“…Cetyltrimethylammonium bromide (CTAB, C 16 6 ] were purchased from Sinopharm Chemical Reagent Co., Ltd. MoS 2 /PMMT was prepared via in-situ hydrothermal synthesis of MoS 2 within the interlayer of CTAB PMMT. In a typical preparation process, 1.000 g of MMT and 0.350 g of CTAB were added to 60 mL of deionized water, and the mixture suspension was mechanically stirred for 30 min at 60 °C .…”

Section: Materials Preparationmentioning

confidence: 99%

See 1 more Smart Citation

Hierarchical MoS2 intercalated clay hybrid nanosheets with enhanced catalytic activity

et al. 2016

View full text Add to dashboard Cite

Emerging hierarchical MoS 2 /pillared-montmorillonite (MoS 2 /PMMT) hybrid nanosheets were successfully prepared through facile in-situ hydrothermal synthesis of MoS 2 within the interlayer of cetyltrimethylammonium bromide PMMT, and their catalytic performance was evaluated by the reduction reaction of 4-nitrophenol (4-NP) using NaBH 4 as a reductant. Microstructure and morphology characterization indicated that MoS 2 /PMMT exhibited hybrid-stacked layered structures with an interlayer spacing of 1.29 nm, and the MoS 2 nanosheets were intercalated within the montmorillonite (MMT) layers, with most of the edges exposed to the outside. The catalytic activity and stability of MoS 2 /PMMT were both enhanced by the MMT. With the MoS 2 /PMMT as the catalyst, the apparent reaction rate constant of the 4-NP reduction was 0.723 min −1 and was maintained at ~0.679 min −1 after five reaction cycles. The structural evolution of MoS 2 /PMMT and the possible catalysis mechanism for the reduction reaction of 4-NP were investigated. The as-prepared MoS 2 /PMMT hybrid nanosheets are promising candidates for catalytic application in the water-treatment and biomedical fields. The strategy developed in this study can provide insights for designing hybrid nanosheets with diverse heterogeneous two-dimensional (2D) nanomaterials.

show abstract

Section: Nano Resmentioning

confidence: 99%

Section: Materials Preparationmentioning

confidence: 99%

Hierarchical MoS2 intercalated clay hybrid nanosheets with enhanced catalytic activity

et al. 2016

View full text Add to dashboard Cite

show abstract

“…18,19 Despite suggested drawbacks related to multiwalled carbon nanotubes (MWCNTs) shedding carbon layers 20 and leading to an increase in solid–electrolyte interface (SEI), CNTs offer superior electrochemical performance as conductive additives. For example, CNT-MoS 2 sheets 21 were shown to offer a capacity of ∼512 mAh/g at 100A/g, and the highest first cycle capacity was reported for MoS 2 -MWCNTs 20 composites reaching up to ∼2774 mAh/g at 100 mA/g, and more recently, hierarchical MoS 2 tubular-CNT structures were shown to deliver 800 mAh/g at 5A/g (1000 cycles). 22 These values are larger than those reported for MoS 2 /carbon nanoboxes, 23 MoS 2 /polyaniline nanowires, 24 MoS 2 nanowall/cellulose, 25 MoS 2 -graphene, 26 MoS 2 -polyaniline, 24 MoS 2 -carbon coatings, 27 MoS 2 -highly ordered mesoporous carbon, 28 MoS 2 -disordered graphene-like carbon, 29 and MoS 2 hierarchical structures.…”

mentioning

confidence: 99%

Structural Evolution of Electrochemically Lithiated MoS₂ Nanosheets and the Role of Carbon Additive in Li-Ion Batteries

et al. 2016

View full text Add to dashboard Cite

Understanding the structure and phase changes associated with conversion-type materials is key to optimizing their electrochemical performance in Li-ion batteries. For example, molybdenum disulfide (MoS2) offers a capacity up to 3-fold higher (∼1 Ah/g) than the currently used graphite anodes, but they suffer from limited Coulombic efficiency and capacity fading. The lack of insights into the structural dynamics induced by electrochemical conversion of MoS2 still hampers its implementation in high energy-density batteries. Here, by combining ab initio density-functional theory (DFT) simulation with electrochemical analysis, we found new sulfur-enriched intermediates that progressively insulate MoS2 electrodes and cause instability from the first discharge cycle. Because of this, the choice of conductive additives is critical for the battery performance. We investigate the mechanistic role of carbon additive by comparing equal loading of standard Super P carbon powder and carbon nanotubes (CNTs). The latter offer a nearly 2-fold increase in capacity and a 45% reduction in resistance along with Coulombic efficiency of over 90%. These insights into the phase changes during MoS2 conversion reactions and stabilization methods provide new solutions for implementing cost-effective metal sulfide electrodes, including Li–S systems in high energy-density batteries.

show abstract

“…2b), calculated based on BJH model, presents a significant ratio of pore size distributed around 3.2 nm, which confirms our suggestion on mesoporous features of the prepared material. This structure of the hierarchical MoS 2 microspheres has resulted in a high BET specific area of 92 m 2 g -1 compared with other MoS 2 materials (Hu et al 2014b;Xia et al 2016;Li et al 2015). It was found that the pore volume for this sample is 0.271 cm 3 g -1 with the average pore size of 6.1 nm, which could also be attributed to the hierarchical structure and highly developed interlaces of the ultrathin nanosheets.…”

Section: Resultsmentioning

confidence: 75%

Synthesis of hierarchical MoS2 microspheres composed of nanosheets assembled via facile hydrothermal method as anode material for lithium-ion batteries

Zhang

et al. 2016

J Nanopart Res

View full text Add to dashboard Cite

A hierarchical MoS 2 architecture composed of nanosheet-assembled microspheres with an expanded interplanar spacing of the (002) planes was successfully prepared via a simple hydrothermal reaction. Electron microscopy studies revealed formation of the MoS 2 microspheres with an average diameter of 230 nm. It was shown that the hierarchical structure of MoS 2 microspheres possesses both the merits of nanometer-sized building blocks and micrometer-sized assemblies, which offer high surface area for fast kinetics and buffers the volume expansion during lithium insertion/deinsertion, respectively. The micrometer-sized assemblies were found to contribute to the enhanced electrochemical stabilities of the electrode materials. The mentioned advantages of the MoS 2 electrode prepared in this work allowed enhanced cyclability and high rate capability of the material. Along with this, the material delivered a high initial discharge capacity of 1206 mAh g -1 and a reversible discharge capacity of 653 mAh g -1 after 100 cycles at a current density of 100 mA g -1 . Furthermore, the material delivered a high reversible capacity of 480 mAh g -1 at a high current density of 1000 mA g -1 .

show abstract

A three-dimensionally interconnected carbon nanotube/layered MoS2 nanohybrid network for lithium ion battery anode with superior rate capacity and long-cycle-life

Cited by 156 publications

References 42 publications

Hierarchical MoS2 intercalated clay hybrid nanosheets with enhanced catalytic activity

Hierarchical MoS2 intercalated clay hybrid nanosheets with enhanced catalytic activity

Structural Evolution of Electrochemically Lithiated MoS₂ Nanosheets and the Role of Carbon Additive in Li-Ion Batteries

Synthesis of hierarchical MoS2 microspheres composed of nanosheets assembled via facile hydrothermal method as anode material for lithium-ion batteries

Contact Info

Product

Resources

About

A three-dimensionally interconnected carbon nanotube/layered MoS2 nanohybrid network for lithium ion battery anode with superior rate capacity and long-cycle-life

Cited by 156 publications

References 42 publications

Hierarchical MoS2 intercalated clay hybrid nanosheets with enhanced catalytic activity

Hierarchical MoS2 intercalated clay hybrid nanosheets with enhanced catalytic activity

Structural Evolution of Electrochemically Lithiated MoS2 Nanosheets and the Role of Carbon Additive in Li-Ion Batteries

Synthesis of hierarchical MoS2 microspheres composed of nanosheets assembled via facile hydrothermal method as anode material for lithium-ion batteries

Contact Info

Product

Resources

About

Structural Evolution of Electrochemically Lithiated MoS₂ Nanosheets and the Role of Carbon Additive in Li-Ion Batteries