Superior initial coulombic efficiency through graphene quantum dot decorated on MoS2
- Resource Type
- Authors
- Shaozhuan Huang; Glenn Joey Sim; Zhi Xiang Huang; Bo Liu; Ye Wang; Dezhi Kong; Hui Ying Yang
- Source
- FlatChem. 9:8-14
- Subject
- Materials science
Graphene
02 engineering and technology
Nanoflower
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
Graphene quantum dot
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Anode
law.invention
chemistry.chemical_compound
Chemical engineering
chemistry
Quantum dot
law
Materials Chemistry
Ceramics and Composites
0210 nano-technology
Molybdenum disulfide
Faraday efficiency
- Language
- ISSN
- 2452-2627
Molybdenum disulfide (MoS2) nanoflower was grown onto 3D graphene (3DG) by a simple hydrothermal method. Subsequently, Nitrogen doped graphene quantum dots (NGQDs) were decorated on the surface of MoS2 to further enhance the electrochemical performance through a one-step electrodeposition method. The NGQDs decorated MoS2 on 3DG (NGQDs@MoS2/3DG) is further employed directly as a binder free anode of sodium ion batteries (SIBs). NGQD@MoS2/3DG nanoarchitecture delivers a specific capacity of 638 mA h g−1 at 50 mA g−1, and an ultra-high first cycle coulombic efficiency of 85.4%. The outstanding Na+ storage properties of NGQD@MoS2/3DG was attributed to the synergistic effect among the conductive 3DG carbon matrix, MoS2 nanoflowers and decorated NGQDs. These results obtained potentially unveil a path for the development of excellent electrochemical performance with high initial coulombic efficiency of SIBs.