کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6470176 | 1424104 | 2017 | 10 صفحه PDF | دانلود رایگان |
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 (0.1Â 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 2Â wt%. The FeOx-CNT/CNF electrode maintained a capacity of 1008 mAhâgâ1 at a current density of 100 mAâgâ1 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.
Journal: Electrochimica Acta - Volume 253, 1 November 2017, Pages 479-488