Back to Search
Start Over
Gel-Derived Cation-π Stacking Films of Carbon Nanotube-Graphene Complexes as Oxygen Cathodes
- Source :
- ChemSusChem. 7:2845-2852
- Publication Year :
- 2014
- Publisher :
- Wiley, 2014.
-
Abstract
- A key challenge in processing carbon nanotubes and their composites for large-scale applications is aggregation. Cation-π stacking interactions have been discovered to disperse heavily entangled single-walled carbon nanotube (SWNT) bundles in ionic liquids (ILs). In this work, we found that a dispersible, silky single-layer graphene (SLG) can be readily gathered together to form a crosslinked gel after entrapping sufficient IL molecular via the likely noncovalent interaction. By incorporating the dispersed SWNTs into the gathered SLG gel synchronously, we prepared solid, finely crosslinked SWNTs-SLG films, assisted by an avenue of 2-step extraction to remove the IL completely. The gel-derived SWNTs-SLG complex film was applied as a support material of oxygen cathodes for Li-O2 batteries. It exhibited a remarkable improved cycleability in comparison to made of SWNTs and SLG alone due to the finely crosslinked feature. Decorated SWNTs and SLG can also form gel-derived complexes via the same process to construct support-catalyst complexes. A SWNTs-SLG film loaded with Ru nanoparticles exhibited not only catalytic effects, but also the ability to suppress the side reactions, and hence stabilized the whole Li-O2 battery. Our research introduces a gel-derived, high-dispersed processing of carbon nanotube-graphene complexes and demonstrates their favorable applications on Li-O2 batteries.
- Subjects :
- Chemical substance
Materials science
General Chemical Engineering
Stacking
Ionic Liquids
chemistry.chemical_element
Nanoparticle
Nanotechnology
Carbon nanotube
Catalysis
law.invention
chemistry.chemical_compound
Electric Power Supplies
X-Ray Diffraction
law
Spectroscopy, Fourier Transform Infrared
Environmental Chemistry
General Materials Science
Electrodes
Nanotubes, Carbon
Graphene
General Energy
Chemical engineering
chemistry
Ionic liquid
Microscopy, Electron, Scanning
Graphite
Carbon
Subjects
Details
- ISSN :
- 18645631
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- ChemSusChem
- Accession number :
- edsair.doi.dedup.....65f84d59481ff474322e64b57ced1cf0