Continuous Tubular Nanofibers of Vanadium Pentoxide by Electrospinning for Energy Storage Devices

• Main Authors: Neeta L., Lala, Rajan, Jose, M. M., Yusoff, Seeram, Ramakrishna
• Format: Article
• Language: English
• Published: Springer Netherlands 2012
• Subjects: QD Chemistry; TP Chemical technology; TS Manufactures
• Online Access: http://umpir.ump.edu.my/id/eprint/12379/1/Continuous%20tubular%20nanofibres%20of%20vanadium%20pentoxide%20by%20electrospinning%20for%20energy%20storage%20devices.pdf; http://umpir.ump.edu.my/id/eprint/12379/; http://link.springer.com/article/10.1007/s11051-012-1201-1

Tubular nanofibers (TNFs) of vanadium pentoxide (V2O5) were synthesized by electrospinning technique using a single spinneret for the first time by controlling the properties of the precursor solution. A partially miscible polymeric solution of vanadium oxytrihydroxide [VO(OH)3] was produced by hydrolysis of vanadyl acetylacetonate in Poly(vinylpyrrolidone) (PVP). The phase-separated polymer solution formed the core of the electrospun fibers whereas the VO(OH)3 formed the shell; the core PVP has been removed by controlled heat treatment. The TNFs had an inner diameter ~60 nm and wall thickness ~±100 nm. The capacitive behavior of the V2O5 TNFs was studied using cyclic voltammetry and galvanostatic cycling techniques. The studies showed ideal stable supercapacitive characteristics in the electrospun V2O5 TNFs.