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; Sam S. Yoon

doi:10.1016/j.jallcom.2017.09.103

Flexible and freestanding core-shell SnO_x/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
, Sam S. Yoon^*

^*Corresponding author for this work

Department of Mechanical Engineering

Korea University
SUNY Buffalo
Pusan National University

Research output: Contribution to journal › Journal article › peer-review

31 Scopus citations

Abstract

We demonstrate the fabrication of core-shell SnO_x/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 SnO_x/CNF mats and optimized the SnO_x to CNF precursor ratio. The optimized SnO_x/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 SnO_x/CNF mats.

Original language	English
Pages (from-to)	1362-1371
Number of pages	10
Journal	Journal of Alloys and Compounds
Volume	728
DOIs	https://doi.org/10.1016/j.jallcom.2017.09.103
State	Published - 2017

Keywords

Electrospinning
Flexible
SnO/CNF core-shell
Supercapacitor

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10.1016/j.jallcom.2017.09.103

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@article{c59df41884e74afd91610a77ba001a2c,

title = "Flexible and freestanding core-shell SnOx/carbon nanofiber mats for high-performance supercapacitors",

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.",

keywords = "Electrospinning, Flexible, SnO/CNF core-shell, Supercapacitor",

author = "Edmund Samuel and Bhavana Joshi and Jo, \{Hong Seok\} and Kim, \{Yong Il\} and Swihart, \{Mark T.\} and Yun, \{Je Moon\} and Kim, \{Kwang Ho\} and Yoon, \{Sam S.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

doi = "10.1016/j.jallcom.2017.09.103",

language = "English",

volume = "728",

pages = "1362--1371",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

}

TY - JOUR

T1 - Flexible and freestanding core-shell SnOx/carbon nanofiber mats for high-performance supercapacitors

AU - Samuel, Edmund

AU - Joshi, Bhavana

AU - Jo, Hong Seok

AU - Kim, Yong Il

AU - Swihart, Mark T.

AU - Yun, Je Moon

AU - Kim, Kwang Ho

AU - Yoon, Sam S.

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

KW - Electrospinning

KW - Flexible

KW - SnO/CNF core-shell

KW - Supercapacitor

UR - https://www.scopus.com/pages/publications/85029468824

U2 - 10.1016/j.jallcom.2017.09.103

DO - 10.1016/j.jallcom.2017.09.103

M3 - Journal article

AN - SCOPUS:85029468824

SN - 0925-8388

VL - 728

SP - 1362

EP - 1371

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

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

Abstract

Keywords

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