Nitric acid oxidation of electrospun carbon nanofibers as supercapacitor electrodes

Ching Chang Lai, Meng Yin Chung, Chieh-Tsung Lo

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Nitric acid oxidation of electrospun carbon nanofibers, with varying degrees of oxidation, was carried out to understand the effect of acid treatment on the microstructure and capacitive behavior of the fibers. The increasing treatment time increased considerably the oxygen/carbon (O/C) ratio on the fiber surface, and the increase in the oxygen content was mainly contributed by the formation of carbonyl groups. However, nitric acid oxidation reduced the specific surface area and total pore volume of fibers. The specific capacitance of carbon nanofibers was closely related to the O/C ratio, and the specific capacitance of 365 F/g for carbon nanofibers treated with nitric acid for 5 h was obtained. This was ascribed to the increased fiber polarity that facilitated the diffusion of electrolyte ions into the nanofibers. Furthermore, the functional groups contributed to the pseudocapacitance, which was caused by faradaic reactions of oxygen-containing functional groups. The effect of these groups dominated that of structural change on the electrochemical performance of fibers.

Original languageEnglish
Pages (from-to)2337-2348
Number of pages12
JournalTextile Research Journal
Volume87
Issue number19
DOIs
Publication statusPublished - 2017 Nov 1

Fingerprint

Nitric Acid
Carbon nanofibers
Nitric acid
Oxidation
Electrodes
Fibers
Oxygen
Functional groups
Capacitance
Carbon
Nanofibers
Specific surface area
Electrolytes
Supercapacitor
Ions
Microstructure
Acids

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

Cite this

Lai, Ching Chang ; Chung, Meng Yin ; Lo, Chieh-Tsung. / Nitric acid oxidation of electrospun carbon nanofibers as supercapacitor electrodes. In: Textile Research Journal. 2017 ; Vol. 87, No. 19. pp. 2337-2348.
@article{52ea7db77fcd4eb9a242525c99d42e11,
title = "Nitric acid oxidation of electrospun carbon nanofibers as supercapacitor electrodes",
abstract = "Nitric acid oxidation of electrospun carbon nanofibers, with varying degrees of oxidation, was carried out to understand the effect of acid treatment on the microstructure and capacitive behavior of the fibers. The increasing treatment time increased considerably the oxygen/carbon (O/C) ratio on the fiber surface, and the increase in the oxygen content was mainly contributed by the formation of carbonyl groups. However, nitric acid oxidation reduced the specific surface area and total pore volume of fibers. The specific capacitance of carbon nanofibers was closely related to the O/C ratio, and the specific capacitance of 365 F/g for carbon nanofibers treated with nitric acid for 5 h was obtained. This was ascribed to the increased fiber polarity that facilitated the diffusion of electrolyte ions into the nanofibers. Furthermore, the functional groups contributed to the pseudocapacitance, which was caused by faradaic reactions of oxygen-containing functional groups. The effect of these groups dominated that of structural change on the electrochemical performance of fibers.",
author = "Lai, {Ching Chang} and Chung, {Meng Yin} and Chieh-Tsung Lo",
year = "2017",
month = "11",
day = "1",
doi = "10.1177/0040517516671120",
language = "English",
volume = "87",
pages = "2337--2348",
journal = "Textile Reseach Journal",
issn = "0040-5175",
publisher = "SAGE Publications Ltd",
number = "19",

}

Nitric acid oxidation of electrospun carbon nanofibers as supercapacitor electrodes. / Lai, Ching Chang; Chung, Meng Yin; Lo, Chieh-Tsung.

In: Textile Research Journal, Vol. 87, No. 19, 01.11.2017, p. 2337-2348.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nitric acid oxidation of electrospun carbon nanofibers as supercapacitor electrodes

AU - Lai, Ching Chang

AU - Chung, Meng Yin

AU - Lo, Chieh-Tsung

PY - 2017/11/1

Y1 - 2017/11/1

N2 - Nitric acid oxidation of electrospun carbon nanofibers, with varying degrees of oxidation, was carried out to understand the effect of acid treatment on the microstructure and capacitive behavior of the fibers. The increasing treatment time increased considerably the oxygen/carbon (O/C) ratio on the fiber surface, and the increase in the oxygen content was mainly contributed by the formation of carbonyl groups. However, nitric acid oxidation reduced the specific surface area and total pore volume of fibers. The specific capacitance of carbon nanofibers was closely related to the O/C ratio, and the specific capacitance of 365 F/g for carbon nanofibers treated with nitric acid for 5 h was obtained. This was ascribed to the increased fiber polarity that facilitated the diffusion of electrolyte ions into the nanofibers. Furthermore, the functional groups contributed to the pseudocapacitance, which was caused by faradaic reactions of oxygen-containing functional groups. The effect of these groups dominated that of structural change on the electrochemical performance of fibers.

AB - Nitric acid oxidation of electrospun carbon nanofibers, with varying degrees of oxidation, was carried out to understand the effect of acid treatment on the microstructure and capacitive behavior of the fibers. The increasing treatment time increased considerably the oxygen/carbon (O/C) ratio on the fiber surface, and the increase in the oxygen content was mainly contributed by the formation of carbonyl groups. However, nitric acid oxidation reduced the specific surface area and total pore volume of fibers. The specific capacitance of carbon nanofibers was closely related to the O/C ratio, and the specific capacitance of 365 F/g for carbon nanofibers treated with nitric acid for 5 h was obtained. This was ascribed to the increased fiber polarity that facilitated the diffusion of electrolyte ions into the nanofibers. Furthermore, the functional groups contributed to the pseudocapacitance, which was caused by faradaic reactions of oxygen-containing functional groups. The effect of these groups dominated that of structural change on the electrochemical performance of fibers.

UR - http://www.scopus.com/inward/record.url?scp=85031418605&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85031418605&partnerID=8YFLogxK

U2 - 10.1177/0040517516671120

DO - 10.1177/0040517516671120

M3 - Article

AN - SCOPUS:85031418605

VL - 87

SP - 2337

EP - 2348

JO - Textile Reseach Journal

JF - Textile Reseach Journal

SN - 0040-5175

IS - 19

ER -