Abstract
In this work, iron oxide nanoparticle loaded carbon fibers were prepared by electrohydrodynamic co-casting a polymer and particle mixture followed by carbonization. The precursor used to generate carbon fibers was a linear molecular chain polymer: polyacrylonitrile (PAN). A solution containing iron (II, III) oxide (Fe3O4) particles and the PAN polymer dissolved in dimethylformamide (DMF) was electrohydrodynamically co-cast into fibers. The fibers were stabilized in air and carbonized in hydrogen at elevated temperatures. The microstructure and composition of the fibers were analyzed using scanning electron microscopy (SEM). A quantitative metallographic analysis method was used to determine the fiber size. It was found that the iron (II, III) oxide particles distributed uniformly within the carbonized fibers. Photosensitivity of the particle containing fibers was characterized through measuring the open circuit potential of the fiber samples under the visible light illumination. Potential applications of the fibers for photovoltaics and photonic sensing were discussed.
Highlights
Iron oxide has been considered as a low-cost material with high energy storage capacity
The lithium ion battery anode made from the fibers showed improved cycling performance and rate capability
The Fe3 O4 nanoparticles used in this study with a nominal diameter of 500 nm were purchased online from the chemical provider: Alpha Chemicals (Cape Girardeau, MO, USA)
Summary
Iron oxide has been considered as a low-cost material with high energy storage capacity. Zhu et al [1] made iron oxide/porous carbon nanofibers by electrospinning polyvinylpyrrolidone (PVP). Iron acetate and heat treating at 500 ◦ C in nitrogen. The prepared porous nanofibers contain a carbon content of 12.5 wt.%. The iron oxide particles were coated with the carbon derived from. The lithium ion battery anode made from the fibers showed improved cycling performance and rate capability. There are many other researchers who reported their work on this application [2,3,4,5,6,7]
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