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

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

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
Publication status	Published - 2017

Bibliographical note

Funding Information:
This research was supported by Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning ( 2013M3A6B1078879 ), and NRF-2016M1A2A2936760 , and NRF-2017R1A2B4005639 .

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

Electrospinning
Flexible
SnO/CNF core-shell
Supercapacitor

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2017.09.103

Cite this

@article{371e66976b9b408e8a1fb6e870dfb311,

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 = "Funding Information: This research was supported by Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning ( 2013M3A6B1078879 ), and NRF-2016M1A2A2936760 , and NRF-2017R1A2B4005639 . 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",

publisher = "Elsevier BV",

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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.

N1 - Funding Information: This research was supported by Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning ( 2013M3A6B1078879 ), and NRF-2016M1A2A2936760 , and NRF-2017R1A2B4005639 . Publisher Copyright: © 2017 Elsevier B.V.

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

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