A novel carbon-decorated hollow flower-like MoS2 nanostructure wrapped with RGO for enhanced sodium-ion storage

Zhang, Yan; Yu, Shimeng; Wang, Hui; Zhu, Zhifeng; Liu, Qian; Xu, Enze; Li, Danting; Tong, Guoqing; Jiang, Yang

doi:10.1016/j.cej.2018.03.003

Cited by 46 publications

(17 citation statements)

References 53 publications

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“…Figure 6a, b show the Nyquist plots related to the MoS 2 -MS and MoS 2 -MS-800-based anode anodes after different cycles, respectively, in which a semicircle in the high frequency region and a slope line in the low-frequency region correspond to the chargetransfer process and the Warburg process during the Na ? ion diffusion, respectively [45,46]. Compared with the impedance spectra of MoS 2 -MS-800-based anode (Fig.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Coral reef-like MoS2 microspheres with 1T/2H phase as high-performance anode material for sodium ion batteries

et al. 2020

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Coral reef-like MoS 2 microspheres (MoS 2-MS) with 1T/2H phase is synthesized by a simple one-step hydrothermal method. It is found that this material has disordered structure, rich defects and large interlayer spacing. As it is used as the anode material for sodium ion batteries (SIBs), a stable specific capacity of 467 mA h g-1 at a current density of 100 mA g-1 after 100 cycles is delivered. Moreover, after 500-cycle test at 1 A g-1 , a highly stable specific capacity is still maintained at 412 mA h g-1. In addition, even at a high current density of 20 A g-1 , the MoS 2-MS electrode delivers a specific capacity of 100 mA h g-1. It is considered that the 1T/2H phase MoS 2-MS with a disordered structure can effectively enhance the electrical conductivity for the rate performance improvement, and furthermore, the rich defects provide more active sites for Na ? storage and the large interlayer spacing allows the rapid diffusion of the Na ? ions.

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Section: Electrochemical Measurementsmentioning

confidence: 99%

Coral reef-like MoS2 microspheres with 1T/2H phase as high-performance anode material for sodium ion batteries

et al. 2020

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“…3f) is performed in air from room temperature to 800 °C. The MoS2 and carbon are oxidized to MoO3 and CO2 in this temperature range [3,26]. After calculation, the mass percentages of MoS2 in the C-MoS2/rGO and C-MoS2/rGO-6 composite are about 80 wt.% and 78 wt.%, respectively.…”

Section: Resultsmentioning

confidence: 93%

“…Two clear peaks at about 378 cm -1 and 404 cm -1 are showed in all curves of MoS2, consistent with the inplane 2 1 and out-of-plane A1g of the pristine MoS2, respectively[33]. In addition to these peaks from pristine MoS2, the Raman spectra of C-MoS2/rGO, C-MoS2/rGO-6, C-MoS2/rGO-4 and C-MoS2/rGO-8 exhibit two broad bands at 1363 cm -1 (D-band) and1587 cm -1 (G band) resulted from in-plane vibrations and defect-induced vibrations of sp 2 hybridized carbon in amorphous carbon and rGO[26].…”

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confidence: 99%

Design and facile synthesis of defect rich C-MoS₂/rGO nanosheets for enhanced lithium-sulfur battery performance

Tian¹,

Ji²,

Ma³

et al. 2019

Preprint

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Reliable design and fabrication of advanced electrode materials are vital for developing lithium sulfur batteries. In this contribution, we report a simple one-step hydrothermal strategy for fabrication of a C-MoS2/rGO composite with both large surface area and high porosity. Double modified defect-rich MoS2 nanosheets are successfully prepared by introducing graphene oxide (GO) and amorphous carbon. The conductibility and structural stabilization of the cathodes can be improved owing to combination between the amorphous carbon and rGO, which could also restrain the dissolution of polysulfides. After annealing at different temperatures, it is found that the C-MoS2/rGO-6-S composite annealed at 600 oC delivers noticeably enhanced the performance of lithium-sulfur batteries, with a high specific capacity of 572 mAh·g-1 at 0.2C after 550 cycles, and 551 mAh·g-1 even at 2C, much better than those of MoS2-S nanosheets (249 mAh·g-1 and 149 mAh·g-1) and C-MoS2/rGO-S composite (334 mAh·g-1 and 382 mAh·g-1). Our intended electrode design protocol and annealing process may pave the way for the construction of other high-performance metal disulphide electrode for electrochemical energy storage.

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“…3) is performed in atmosphere from room temperature to 800 °C. MoS 2 and carbon are oxidized to MoO 3 and CO 2 in this temperature range [3,30].…”

Section: Resultsmentioning

confidence: 99%

“…Two clear peaks at about 378 cm −1 and 404 cm −1 show in all curves of MoS 2 , consistent with the in-plane and out-of-plane A 1g vibrations of pristine MoS 2 , respectively [37]. In addition to these peaks from pristine MoS 2 , the Raman spectra of C-MoS 2 /rGO, C-MoS 2 /rGO-6, C-MoS 2 /rGO-4 and C-MoS 2 /rGO-8 exhibit two broad bands at 1363 cm −1 (D-band) and 1587 cm −1 (G-band) resulting from in-plane vibrations and defect-induced vibrations of sp 2 -hybridized carbon atoms in amorphous carbon and rGO [30].…”

Section: Resultsmentioning

confidence: 99%

Design and facile synthesis of defect-rich C-MoS₂/rGO nanosheets for enhanced lithium–sulfur battery performance

Tian¹,

Ji²,

Ma³

et al. 2019

Beilstein J. Nanotechnol.

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We report a simple one-step hydrothermal strategy for the fabrication of a C-MoS2/rGO composite with both large surface area and high porosity for the use as advanced electrode material in lithium–sulfur batteries. Double modified defect-rich MoS2 nanosheets are successfully prepared by introducing reduced graphene oxide (rGO) and amorphous carbon. The conductibility of the cathodes can be improved through the combination of amorphous carbon and rGO, which could also limit the dissolution of polysulfides. After annealing at different temperatures, it is found that the C-MoS2/rGO-6-S composite annealed at 600 °C yields a noticeably enhanced performance of lithium–sulfur batteries, with a high specific capacity of 572 mAh·g−1 at 0.2C after 550 cycles, and 551 mAh·g−1 even at 2C, much better than that of MoS2-S nanosheets (249 mAh·g−1 and 149 mAh·g−1) and C-MoS2/rGO-S composites (334 mAh·g−1 and 382 mAh·g−1). Our intended electrode design protocol and annealing process may pave the way for the construction of other high-performance metal disulfide electrodes for electrochemical energy storage.

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A novel carbon-decorated hollow flower-like MoS2 nanostructure wrapped with RGO for enhanced sodium-ion storage

Cited by 46 publications

References 53 publications

Coral reef-like MoS2 microspheres with 1T/2H phase as high-performance anode material for sodium ion batteries

Coral reef-like MoS2 microspheres with 1T/2H phase as high-performance anode material for sodium ion batteries

Design and facile synthesis of defect rich C-MoS₂/rGO nanosheets for enhanced lithium-sulfur battery performance

Design and facile synthesis of defect-rich C-MoS₂/rGO nanosheets for enhanced lithium–sulfur battery performance

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A novel carbon-decorated hollow flower-like MoS2 nanostructure wrapped with RGO for enhanced sodium-ion storage

Cited by 46 publications

References 53 publications

Coral reef-like MoS2 microspheres with 1T/2H phase as high-performance anode material for sodium ion batteries

Coral reef-like MoS2 microspheres with 1T/2H phase as high-performance anode material for sodium ion batteries

Design and facile synthesis of defect rich C-MoS2/rGO nanosheets for enhanced lithium-sulfur battery performance

Design and facile synthesis of defect-rich C-MoS2/rGO nanosheets for enhanced lithium–sulfur battery performance

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Design and facile synthesis of defect rich C-MoS₂/rGO nanosheets for enhanced lithium-sulfur battery performance

Design and facile synthesis of defect-rich C-MoS₂/rGO nanosheets for enhanced lithium–sulfur battery performance