Few layer graphene wrapped mixed phase TiO2 nanofiber as a potential electrode material for high performance supercapacitor applications.
- Resource Type
- Article
- Authors
- Thirugnanam, Lavanya; Sundara, Ramaprabhu
- Source
- Applied Surface Science. Jun2018, Vol. 444, p414-422. 9p.
- Subject
- *GRAPHENE
*PHASE transitions
*TITANIUM dioxide nanoparticles
*SUPERCAPACITORS
*RUTILE
- Language
- ISSN
- 0169-4332
A combination of favorable composition and optimized anatase/rutile mixed-phase TiO 2 (MPTNF)/Hydrogen exfoliated graphene (HEG) composite nanofibers (MPTNF/HEG) and anatase/rutile mixed-phase TiO 2 /reduced graphene oxide (rGO) composite nanofibers (MPTNF/rGO) have been reported to enhance the electrochemical properties for supercapacitor applications. These composite nanofibers have been synthesized by an efficient route of electrospinning together with the help of easy chemical methods. Both the composites exhibit good charge storage capability with enhanced pseudocapacitance and electric double-layer capacitance (EDLC) as confirmed by cyclic voltammetry studies. MPTNF/HEG composite showed maximum specific capacitance of 210.5 F/g at the current density of 1 A/g, which was mainly due to its availability of the more active sites for ions adsorption on a few layers of graphene wrapped TiO 2 nanofiber surface. The synergistic effect of anatase/rutile mixed phase with one dimensional nanostructure and the electronic interaction between TiO 2 and few layer graphene provided the subsequent improvement of ion adsorption capacity. Also exhibit excellent electrochemical performance to improve the capacitive properties of TiO 2 electrode materials which is required for the development of flexible electrodes in energy storage devices and open up new opportunities for high performance supercapacitors. [ABSTRACT FROM AUTHOR]