Microwave-assisted synthesis of electrode materials for LIBs: MoS2/rGO heterostructures

The incomplete reduction of graphene oxide (GO) yields reduced graphene oxide (rGO), characterized by a zero band gap and intrinsic layer stacking, thus constraining its practical utility across diverse domains. Fortunately, this challenge can be effectively addressed by employing a suitable substra...

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Bibliographic Details
Published in:Journal of sulfur chemistry 2024-09, Vol.45 (5), p.740-757
Main Authors: Wang, Yuyang, Ge, Tao, Zhan, Xinju, Liu, Song, Wei, Yulu, Qiao, Yueyue
Format: Article
Language:English
Subjects:
Electrode materials
Electrodes
Graphene
heterostructure
Heterostructures
microwave
Molybdenum disulfide
MoS
Nanocomposites
Particulate composites
reduced graphene oxide
Structural analysis
structure characterization
Substrates
Synthesis
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Summary:The incomplete reduction of graphene oxide (GO) yields reduced graphene oxide (rGO), characterized by a zero band gap and intrinsic layer stacking, thus constraining its practical utility across diverse domains. Fortunately, this challenge can be effectively addressed by employing a suitable substrate for the fabrication of MoS 2 /rGO heterostructures. Nanocomposites of MoS 2 /reduced graphene oxide (MoS 2 /rGO-700W and MoS 2 /rGO-560W) were synthesized using MoS 2 and GO solutions as starting materials through microwave-assisted synthesis with microwave power treatments of 700W and 560W, respectively. Structural characterization results reveal that the particle size of MoS 2 within the composites is notably smaller compared to that of pure MoS 2 . The MoS 2 /rGO-700W composite demonstrates a more homogeneous dispersion of MoS 2 and features a well-developed hierarchical porous structure with increased pore volume and specific surface area. The MoS 2 /rGO-700W composite demonstrates elevated I D /I G ratio, C/O ratio and C = C peak area, suggesting that increased microwave power enhances the removal of oxygen-containing groups from rGO. This process significantly restores the extended conjugated structure of graphene, thereby offering enhanced conductivity at the MoS 2 interface. Furthermore, the proposed strategy holds considerable theoretical value and provides significant insights for the development process of novel MoS 2 -based composite electrode materials.
ISSN:1741-5993
1741-6000
DOI:10.1080/17415993.2024.2387228