Flexible and freestanding core-shell SnOx/carbon nanofiber mats for high-performance supercapacitors

Edmund Samuel, Bhavana Joshi, Hong Seok Jo, Yong Il Kim, Mark T. Swihart, Je Moon Yun, Kwang Ho Kim, Suk Goo Yoon

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We demonstrate the fabrication of core-shell SnOx/carbon nanofiber (CNF) composite mats via single-nozzle one-step electrospinning for use as flexible freestanding electrodes in supercapacitors. The freestanding and flexible nature of the composites is essential for their use in lightweight, portable, and foldable electronic devices and eliminates the need for a separate current collector. We fully characterized the structural and morphological properties of the SnOx/CNF mats and optimized the SnOx to CNF precursor ratio. The optimized SnOx/CNF-based symmetric supercapacitor exhibited a capacitance of 289 F·g−1 at a scan rate of 10 mV·s−1. Moreover, it retained more than 88% of its initial capacitance after 5000 cycles, highlighting the long-term stability of supercapacitors based on these SnOx/CNF mats.

Original languageEnglish
Pages (from-to)1362-1371
Number of pages10
JournalJournal of Alloys and Compounds
Volume728
DOIs
Publication statusPublished - 2017 Dec 25

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Carbon nanofibers
Capacitance
Composite materials
Electrospinning
Nozzles
Supercapacitor
Fabrication
Electrodes

Keywords

  • Electrospinning
  • Flexible
  • SnO/CNF core-shell
  • Supercapacitor

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Flexible and freestanding core-shell SnOx/carbon nanofiber mats for high-performance supercapacitors. / Samuel, Edmund; Joshi, Bhavana; Jo, Hong Seok; Kim, Yong Il; Swihart, Mark T.; Yun, Je Moon; Kim, Kwang Ho; Yoon, Suk Goo.

In: Journal of Alloys and Compounds, Vol. 728, 25.12.2017, p. 1362-1371.

Research output: Contribution to journalArticle

Samuel, Edmund ; Joshi, Bhavana ; Jo, Hong Seok ; Kim, Yong Il ; Swihart, Mark T. ; Yun, Je Moon ; Kim, Kwang Ho ; Yoon, Suk Goo. / Flexible and freestanding core-shell SnOx/carbon nanofiber mats for high-performance supercapacitors. In: Journal of Alloys and Compounds. 2017 ; Vol. 728. pp. 1362-1371.
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