Effects of pore structures on electrochemical behaviors of polyacrylonitrile (PAN)-based activated carbon nanofibers

Hye Min Lee; Hong Gun Kim; Shin Jae Kang; Soo Jin Park; Kay Hyeok An; Byung Joo Kim

doi:10.1016/j.jiec.2014.04.004

Effects of pore structures on electrochemical behaviors of polyacrylonitrile (PAN)-based activated carbon nanofibers

Hye Min Lee, Hong Gun Kim, Shin Jae Kang, Soo Jin Park, Kay Hyeok An, Byung Joo Kim

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

69 Scopus citations

Abstract

In this study, activated carbon nanofibers (ACNFs) were prepared for supercapacitor electrode applications by using nanosize polyacrylonitrile (PAN) fibers as a precursor, following treatments under various activation conditions. The surface morphologies and structural characteristics of the ACNF were observed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The N₂ adsorption isotherm characteristics at 77K were confirmed by Brunauer-Emmett-Teller (BET) and Dubinin-Radushkevich (DR) equations. The mesopore size distributions of the samples were obtained by Barrett-Joyner-Halenda (BJH) equation. The ACNFs were applied as an electrode for electrical double-layer capacitors and analyzed in relation to the activation conditions. SEM analysis confirmed that many pores or excessively-oxidized structures were found on the fiber surfaces after KOH activation. The specific surface areas and specific capacitance of the prepared ACNFs were enhanced with increasing activation time.

Original language	English
Pages (from-to)	736-740
Number of pages	5
Journal	Journal of Industrial and Engineering Chemistry
Volume	21
DOIs	https://doi.org/10.1016/j.jiec.2014.04.004
State	Published - 25 Jan 2015

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Publisher Copyright:
© 2014 The Korean Society of Industrial and Engineering Chemistry.

Keywords

Activated carbon nanofiber
KOH
Polyacrylonitrile
Supercapacitor

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title = "Effects of pore structures on electrochemical behaviors of polyacrylonitrile (PAN)-based activated carbon nanofibers",

abstract = "In this study, activated carbon nanofibers (ACNFs) were prepared for supercapacitor electrode applications by using nanosize polyacrylonitrile (PAN) fibers as a precursor, following treatments under various activation conditions. The surface morphologies and structural characteristics of the ACNF were observed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The N2 adsorption isotherm characteristics at 77K were confirmed by Brunauer-Emmett-Teller (BET) and Dubinin-Radushkevich (DR) equations. The mesopore size distributions of the samples were obtained by Barrett-Joyner-Halenda (BJH) equation. The ACNFs were applied as an electrode for electrical double-layer capacitors and analyzed in relation to the activation conditions. SEM analysis confirmed that many pores or excessively-oxidized structures were found on the fiber surfaces after KOH activation. The specific surface areas and specific capacitance of the prepared ACNFs were enhanced with increasing activation time.",

keywords = "Activated carbon nanofiber, KOH, Polyacrylonitrile, Supercapacitor",

author = "Lee, {Hye Min} and Kim, {Hong Gun} and Kang, {Shin Jae} and Park, {Soo Jin} and An, {Kay Hyeok} and Kim, {Byung Joo}",

note = "Publisher Copyright: {\textcopyright} 2014 The Korean Society of Industrial and Engineering Chemistry.",

year = "2015",

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doi = "10.1016/j.jiec.2014.04.004",

language = "English",

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T1 - Effects of pore structures on electrochemical behaviors of polyacrylonitrile (PAN)-based activated carbon nanofibers

AU - Lee, Hye Min

AU - Kim, Hong Gun

AU - Kang, Shin Jae

AU - Park, Soo Jin

AU - An, Kay Hyeok

AU - Kim, Byung Joo

PY - 2015/1/25

Y1 - 2015/1/25

N2 - In this study, activated carbon nanofibers (ACNFs) were prepared for supercapacitor electrode applications by using nanosize polyacrylonitrile (PAN) fibers as a precursor, following treatments under various activation conditions. The surface morphologies and structural characteristics of the ACNF were observed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The N2 adsorption isotherm characteristics at 77K were confirmed by Brunauer-Emmett-Teller (BET) and Dubinin-Radushkevich (DR) equations. The mesopore size distributions of the samples were obtained by Barrett-Joyner-Halenda (BJH) equation. The ACNFs were applied as an electrode for electrical double-layer capacitors and analyzed in relation to the activation conditions. SEM analysis confirmed that many pores or excessively-oxidized structures were found on the fiber surfaces after KOH activation. The specific surface areas and specific capacitance of the prepared ACNFs were enhanced with increasing activation time.

AB - In this study, activated carbon nanofibers (ACNFs) were prepared for supercapacitor electrode applications by using nanosize polyacrylonitrile (PAN) fibers as a precursor, following treatments under various activation conditions. The surface morphologies and structural characteristics of the ACNF were observed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The N2 adsorption isotherm characteristics at 77K were confirmed by Brunauer-Emmett-Teller (BET) and Dubinin-Radushkevich (DR) equations. The mesopore size distributions of the samples were obtained by Barrett-Joyner-Halenda (BJH) equation. The ACNFs were applied as an electrode for electrical double-layer capacitors and analyzed in relation to the activation conditions. SEM analysis confirmed that many pores or excessively-oxidized structures were found on the fiber surfaces after KOH activation. The specific surface areas and specific capacitance of the prepared ACNFs were enhanced with increasing activation time.

KW - Activated carbon nanofiber

KW - KOH

KW - Polyacrylonitrile

KW - Supercapacitor

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DO - 10.1016/j.jiec.2014.04.004

M3 - Article

AN - SCOPUS:84920707165

SN - 1226-086X

VL - 21

SP - 736

EP - 740

JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

ER -

Effects of pore structures on electrochemical behaviors of polyacrylonitrile (PAN)-based activated carbon nanofibers

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Keywords

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