Abstract
We demonstrate the fabrication of flexible electrospun carbon nanofibers (CNFs) containing uniformly distributed carbon nanotubes (CNTs) and iron oxide (FeOx) nanoparticles (NPs) as a composite material for lithium-ion battery (LIB) anodes. The uniform incorporation of CNTs and FeOx NPs within the CNFs was confirmed by transmission electron microscopy. Embedding even a small amount of CNTs (0.1 wt%) in the CNFs increased the LIB performance by a factor of two compared with pure CNFs. The specific capacity was also increased, by 25%, when an iron source (iron (III) acetylacetonate) was added at a concentration of 2 wt%. The FeOx-CNT/CNF electrode maintained a capacity of 1008 mAh∙g−1 at a current density of 100 mA∙g−1 after 100 cycles. Further, the high-performance anode material was freestanding, flexible, and lightweight. This makes it suitable for next-generation LIBs, which must deliver high power over long periods while also being light and flexible.
Original language | English |
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Pages (from-to) | 479-488 |
Number of pages | 10 |
Journal | Electrochimica Acta |
Volume | 253 |
DOIs | |
Publication status | Published - 2017 Nov 1 |
Keywords
- Anode
- Carbon nanotube
- Electrospinning
- Iron oxide
- Lithim ion battery
ASJC Scopus subject areas
- Chemical Engineering(all)
- Electrochemistry