Carbon Nanofibers Loaded with Carbon Nanotubes and Iron Oxide as Flexible Freestanding Lithium-Ion Battery Anodes

Bhavana Joshi; Edmund Samuel; Hong Seok Jo; Yong Il Kim; Sera Park; Mark T. Swihart; Wooyoung Yoon; Suk Goo Yoon

doi:10.1016/j.electacta.2017.09.086

Carbon Nanofibers Loaded with Carbon Nanotubes and Iron Oxide as Flexible Freestanding Lithium-Ion Battery Anodes

Bhavana Joshi, Edmund Samuel, Hong Seok Jo, Yong Il Kim, Sera Park, Mark T. Swihart, Wooyoung Yoon, Suk Goo Yoon

Department of Materials Science and Engineering

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

24 Citations (Scopus)

Abstract

We demonstrate the fabrication of flexible electrospun carbon nanofibers (CNFs) containing uniformly distributed carbon nanotubes (CNTs) and iron oxide (FeO_x) nanoparticles (NPs) as a composite material for lithium-ion battery (LIB) anodes. The uniform incorporation of CNTs and FeO_x NPs within the CNFs was confirmed by transmission electron microscopy. Embedding even a small amount of CNTs (0.1 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 2 wt%. The FeO_x-CNT/CNF electrode maintained a capacity of 1008 mAh∙g⁻¹ at a current density of 100 mA∙g⁻¹ 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.

Original language	English
Pages (from-to)	479-488
Number of pages	10
Journal	Electrochimica Acta
Volume	253
DOIs	https://doi.org/10.1016/j.electacta.2017.09.086
Publication status	Published - 2017 Nov 1

Keywords

Anode
Carbon nanotube
Electrospinning
Iron oxide
Lithim ion battery

ASJC Scopus subject areas

Chemical Engineering(all)
Electrochemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.electacta.2017.09.086

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title = "Carbon Nanofibers Loaded with Carbon Nanotubes and Iron Oxide as Flexible Freestanding Lithium-Ion Battery Anodes",

abstract = "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 (0.1 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 2 wt%. The FeOx-CNT/CNF electrode maintained a capacity of 1008 mAh∙g−1 at a current density of 100 mA∙g−1 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.",

keywords = "Anode, Carbon nanotube, Electrospinning, Iron oxide, Lithim ion battery",

author = "Bhavana Joshi and Edmund Samuel and Jo, {Hong Seok} and Kim, {Yong Il} and Sera Park and Swihart, {Mark T.} and Wooyoung Yoon and Yoon, {Suk Goo}",

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AU - Joshi, Bhavana

AU - Samuel, Edmund

AU - Jo, Hong Seok

AU - Kim, Yong Il

AU - Park, Sera

AU - Swihart, Mark T.

AU - Yoon, Wooyoung

AU - Yoon, Suk Goo

PY - 2017/11/1

Y1 - 2017/11/1

N2 - 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 (0.1 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 2 wt%. The FeOx-CNT/CNF electrode maintained a capacity of 1008 mAh∙g−1 at a current density of 100 mA∙g−1 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.

AB - 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 (0.1 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 2 wt%. The FeOx-CNT/CNF electrode maintained a capacity of 1008 mAh∙g−1 at a current density of 100 mA∙g−1 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.

KW - Anode

KW - Carbon nanotube

KW - Electrospinning

KW - Iron oxide

KW - Lithim ion battery

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Carbon Nanofibers Loaded with Carbon Nanotubes and Iron Oxide as Flexible Freestanding Lithium-Ion Battery Anodes

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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