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Structure-designed synthesis of 3D MoS2 anchored on ionic liquid modified rGO–CNTs inspired by a honeycomb for excellent lithium storage
- Source :
- Journal of Materials Chemistry A. 8:4868-4876
- Publication Year :
- 2020
- Publisher :
- Royal Society of Chemistry (RSC), 2020.
-
Abstract
- MoS2 is currently under intensive research as a potential candidate for energy storage applications because of its high theoretical capacity. However, unmodified MoS2 suffers from inferior rate capability and poor long-term cycling stability. Inspired by a hornet making a nest and the favorable shape and structural strength of a honeycomb, a composite with a three-dimensional highly porous sandwiched honeycomb structure has been successfully prepared for the first time. Its novel structure originates from anchoring self-assembled flower-like porous MoS2 slices (MoS2-FPSs) on layer-by-layer reduced graphene oxide (rGO)–carbon nanotubes (CNTs) with the assistance of an ionic liquid (IL). The MoS2 ultrathin nanosheets are self-assembled to form MoS2-FPSs and then co-assembled with rGO and CNTs to generate a hierarchical porous structure. By virtue of this novel superstructure, the electrode demonstrates remarkable electrochemical properties with a high initial capacity (1456 mA h g−1) and an enhanced high rate capability (712 mA h g−1 at 5 A g−1), as well as one of the best long-term cycling stabilities with a capacity decay as low as 0.0075% per cycle (745 mA h g−1 at 5 A g−1 after 1000 cycles), confirming its potential application in high-performance lithium-ion batteries.
- Subjects :
- Materials science
Renewable Energy, Sustainability and the Environment
Graphene
Composite number
Oxide
chemistry.chemical_element
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
law.invention
chemistry.chemical_compound
Honeycomb structure
chemistry
Chemical engineering
law
Ionic liquid
Electrode
Honeycomb
General Materials Science
Lithium
0210 nano-technology
Subjects
Details
- ISSN :
- 20507496 and 20507488
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Chemistry A
- Accession number :
- edsair.doi...........6ff7e176cb8a80bf733e27bbaa08d65d