Single‐Layered Ultrasmall Nanoplates of MoS<sub>2</sub> Embedded in Carbon Nanofibers with Excellent Electrochemical Performance for Lithium and Sodium Storage

Zhu, Changbao; Mu, Xiaoke; Aken, Peter A. van; Yu, Yan; Maier, Joachim

doi:10.1002/ange.201308354

Cited by 172 publications

(98 citation statements)

References 40 publications

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“…1,2 Owing to its structural, electronic and electrochemical features, MoS 2 has been explored as the active material for various devices, including fieldeffect transistors, 3 light-emitting diodes, 4 biosensors, 5 lithium-ion batteries (LIBs) and hydrogen production. [6][7][8][9][10] MoS 2 shows a number of advantageous features when used as the anode of LIBs. First, MoS 2 has a theoretical specific capacity of 670 mAh g − 1 , which is almost double the capacity of graphite, the dominant anode material of current commercial LIBs.…”

Section: Introductionmentioning

confidence: 99%

MoS2-coated vertical graphene nanosheet for high-performance rechargeable lithium-ion batteries and hydrogen production

et al. 2016

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Hybrid nanostructures composed of vertical graphene nanosheet (VGNS) and MoS 2 nano-leaves are synthesized by the chemical vapor deposition method followed by a solvothermal process. The unique three-dimensional nanostructures of MoS 2 /VGNS arranged in a vertically aligned manner can be easily constructed on various substrates, including Ni foam and graphite paper. Compared with MoS 2 /carbon black, MoS 2 /VGNS nanocomposites grown on Ni foam exhibit enhanced electrochemical performance as the anode material of lithium-ion batteries, delivering a specific capacity of 1277 mAh g − 1 at a current density of 100 mA g − 1 and a high first-cycle coulombic efficiency of 76.6%. Moreover, the MoS 2 /VGNS nanostructures also retain a capacity of 1109 mAh g − 1 after 100 cycles at a current density of 200 mA g − 1 , suggesting excellent cycling stability. In addition, when the MoS 2 /VGNS nanocomposites grown on graphite paper are applied in the hydrogen evolution reaction, a small Tafel slope of 41.3 mV dec − 1 and a large double-layer capacitance of 7.96 mF cm − 2 are obtained, which are among the best values achievable by MoS 2 -based hybrid structures. These results demonstrate the potential applications of MoS 2 /VGNS hybrid materials for energy conversion and storage and may open up a new avenue for the development of vertically aligned, multifunctional nanoarchitectures.

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Section: Introductionmentioning

confidence: 99%

MoS2-coated vertical graphene nanosheet for high-performance rechargeable lithium-ion batteries and hydrogen production

et al. 2016

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“…Co-intercalation between graphite and diglymebased electrolyte could also achieve a relatively high capacity of B90 mA h g À 1 and long cycle life 15 . Recent findings have shown that the anode materials for SIBs based on alloy-type (for example, metallic and intermetallic materials [16][17][18][19] ) and conversion-type (for example, sulfides [20][21][22][23] ) exhibited high initial capacity, but suffered from poor cyclability most likely due to the large volume change and the sluggish kinetics. In addition, organic anode materials (for example, Na 2 C 8 H 4 O 4 ) and carboxylate-based materials have been investigated as anode materials for SIBs 24,25 , but the electronic conductivity and cyclability still remain the significant challenge.…”

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confidence: 99%

Na+ intercalation pseudocapacitance in graphene-coupled titanium oxide enabling ultra-fast sodium storage and long-term cycling

et al. 2015

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Sodium-ion batteries are emerging as a highly promising technology for large-scale energy storage applications. However, it remains a significant challenge to develop an anode with superior long-term cycling stability and high-rate capability. Here we demonstrate that the Na þ intercalation pseudocapacitance in TiO 2 /graphene nanocomposites enables high-rate capability and long cycle life in a sodium-ion battery. This hybrid electrode exhibits a specific capacity of above 90 mA h g -1 at 12,000 mA g -1 (B36 C). The capacity is highly reversible for more than 4,000 cycles, the longest demonstrated cyclability to date. First-principle calculations demonstrate that the intimate integration of graphene with TiO 2 reduces the diffusion energy barrier, thus enhancing the Na þ intercalation pseudocapacitive process. The Na-ion intercalation pseudocapacitance enabled by tailor-deigned nanostructures represents a promising strategy for developing electrode materials with high power density and long cycle life.

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“…5d), P@AC@CNT-3 was tested at a current density of 0.1 C (158 mA h g −1 ) between 0.001 and 2 V (vs. Na + /Na). Compared with Li storage, both a lower voltage plateau and capacity were measured, ascribed to differences in the thermodynamics and kinetics of the lithiation and sodiation processes [9,45,46]. In addition, the SEI formation and irreversible Na insertion into AC@CNT also resulted in a decreased ICE value (87.3%) and a lower initial charge capacity of 1,487 mA h g −1 for P@AC@CNT-3 in NIBs (Table S4).…”

Section: Resultsmentioning

confidence: 99%

Nano-structured red phosphorus/porous carbon as a superior anode for lithium and sodium-ion batteries

Ding

Zhu

et al. 2017

Sci. China Mater.

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To enhance electrochemical performance of lithium or sodium-ion batteries (LIBs or NIBs), active materials are usually filled in porous conductive particles to produce anode composites. However, it is still challenging to achieve high performance anode composites with high specific capacity, excellent rate performance, high initial Coulombic efficiency (ICE) and long cycle life. Based on these requirements, we design and fabricate activated carbon-coated carbon nanotubes (AC@CNT) with hierarchical structures containing micro-and meso-pores. A new structure of phosphorus/carbon composite (P@AC@CNT) is prepared by confining red P in porous carbon through a vaporization-condensation-conversion method. The micro-pores are filled with P, while the meso-pores remain unoccupied, and the pore openings on the particle surface are sealed by P. Due to the unique structure of P@AC@CNT, it displays a high specific capacity of 1674 mA h g −1 at 0.2 C, ultrahigh ICE of 92.2%, excellent rate performance of 1116 mA h g −1 at 6 C, and significantly enhanced cycle stability for LIBs. The application of P@AC@CNT in NIBs is further explored. This method for the fabrication of the special composites with improved electrochemical performance can be extended to other energy storage applications.

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Single‐Layered Ultrasmall Nanoplates of MoS₂ Embedded in Carbon Nanofibers with Excellent Electrochemical Performance for Lithium and Sodium Storage

Cited by 172 publications

References 40 publications

MoS2-coated vertical graphene nanosheet for high-performance rechargeable lithium-ion batteries and hydrogen production

MoS2-coated vertical graphene nanosheet for high-performance rechargeable lithium-ion batteries and hydrogen production

Na+ intercalation pseudocapacitance in graphene-coupled titanium oxide enabling ultra-fast sodium storage and long-term cycling

Nano-structured red phosphorus/porous carbon as a superior anode for lithium and sodium-ion batteries

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Single‐Layered Ultrasmall Nanoplates of MoS2 Embedded in Carbon Nanofibers with Excellent Electrochemical Performance for Lithium and Sodium Storage

Cited by 172 publications

References 40 publications

MoS2-coated vertical graphene nanosheet for high-performance rechargeable lithium-ion batteries and hydrogen production

MoS2-coated vertical graphene nanosheet for high-performance rechargeable lithium-ion batteries and hydrogen production

Na+ intercalation pseudocapacitance in graphene-coupled titanium oxide enabling ultra-fast sodium storage and long-term cycling

Nano-structured red phosphorus/porous carbon as a superior anode for lithium and sodium-ion batteries

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Single‐Layered Ultrasmall Nanoplates of MoS₂ Embedded in Carbon Nanofibers with Excellent Electrochemical Performance for Lithium and Sodium Storage