Electrospun Cu/Sn/C nanocomposite fiber anodes with superior usable lifetime for lithium- And sodium-ion batteries

Jae Chan Kim, Dong-Wan Kim

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12 Citations (Scopus)

Abstract

Cu/Sn/C composite nanofibers were synthesized by using dual-nozzle electrospinning and subsequent carbonization. The composite nanofibers are a homogeneous amorphous matrix comprised of Cu, Sn, and C with a trace of crystalline Sn. The Liand Na-ion storage performance of the Cu/Sn/C fiber electrodes were investigated by using cyclic voltammetry, galvanostatic cycling, and electrochemical impedance spectroscopy. Excellent, stable cycling performance indicates capacities of 490 and 220 mAhg-1 for Li-ion (600 cycles) and Na-ion (200 cycles) batteries, respectively. This is a significant improvement over other reported Sn/C nanocomposite devices. These superior electrochemical properties could be attributed to the advantages of incorporating one-dimensional nanostructures into the electrodes, such as short electron diffusion lengths, large specific surface areas, ideal homogeneous structures for buffering volume changes, and better electronic conductivity that results from the amorphous copper and carbon matrix.

Original languageEnglish
Pages (from-to)3313-3318
Number of pages6
JournalChemistry - An Asian Journal
Volume9
Issue number11
DOIs
Publication statusPublished - 2014 Jan 1

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ASJC Scopus subject areas

  • Chemistry(all)

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