Three-dimensional nitrogen-doped hollow carbon fiber with a micro-scale diameter as a binder-free oxygen electrode for Li-O2 batteries

Katie Heeyum Lim, Heejun Kweon, Hansung Kim

Research output: Contribution to journalArticle

Abstract

A nitrogen-doped hollow carbon fiber was prepared using polydopamine and electrospun polystyrene fibers as a sacrificial template for the oxygen electrode of Li-O2 batteries. Owing to the fiber structure, a binder is not needed to fabricate the electrode, which eliminates the possibility of side reactions associated with a binder. It was demonstrated that the hollow tubular structure with a large inner diameter is highly effective for accommodating a substantial amount of discharge products without hindering the mass transfer of reactants, even under the fully discharged condition. The reversibility and rate capability were improved by optimizing the length of the fiber. The nitrogen-doped carbon reduced the overall overpotential between the oxygen reduction and oxygen evolution reactions. Therefore, the nitrogen-doped hollow carbon fiber can be used to obtain a highly effective oxygen electrode for Li-O2 batteries.

Original languageEnglish
Pages (from-to)A3425-A3431
JournalJournal of the Electrochemical Society
Volume166
Issue number14
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Carbon fibers
Binders
Nitrogen
Oxygen
Electrodes
Fibers
Polystyrenes
Carbon
Mass transfer
carbon fiber

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

@article{aebca7ef89d2444380fd7838448eae4a,
title = "Three-dimensional nitrogen-doped hollow carbon fiber with a micro-scale diameter as a binder-free oxygen electrode for Li-O2 batteries",
abstract = "A nitrogen-doped hollow carbon fiber was prepared using polydopamine and electrospun polystyrene fibers as a sacrificial template for the oxygen electrode of Li-O2 batteries. Owing to the fiber structure, a binder is not needed to fabricate the electrode, which eliminates the possibility of side reactions associated with a binder. It was demonstrated that the hollow tubular structure with a large inner diameter is highly effective for accommodating a substantial amount of discharge products without hindering the mass transfer of reactants, even under the fully discharged condition. The reversibility and rate capability were improved by optimizing the length of the fiber. The nitrogen-doped carbon reduced the overall overpotential between the oxygen reduction and oxygen evolution reactions. Therefore, the nitrogen-doped hollow carbon fiber can be used to obtain a highly effective oxygen electrode for Li-O2 batteries.",
author = "Lim, {Katie Heeyum} and Heejun Kweon and Hansung Kim",
year = "2019",
month = "1",
day = "1",
doi = "10.1149/2.1101914jes",
language = "English",
volume = "166",
pages = "A3425--A3431",
journal = "Journal of the Electrochemical Society",
issn = "0013-4651",
publisher = "Electrochemical Society, Inc.",
number = "14",

}

Three-dimensional nitrogen-doped hollow carbon fiber with a micro-scale diameter as a binder-free oxygen electrode for Li-O2 batteries. / Lim, Katie Heeyum; Kweon, Heejun; Kim, Hansung.

In: Journal of the Electrochemical Society, Vol. 166, No. 14, 01.01.2019, p. A3425-A3431.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Three-dimensional nitrogen-doped hollow carbon fiber with a micro-scale diameter as a binder-free oxygen electrode for Li-O2 batteries

AU - Lim, Katie Heeyum

AU - Kweon, Heejun

AU - Kim, Hansung

PY - 2019/1/1

Y1 - 2019/1/1

N2 - A nitrogen-doped hollow carbon fiber was prepared using polydopamine and electrospun polystyrene fibers as a sacrificial template for the oxygen electrode of Li-O2 batteries. Owing to the fiber structure, a binder is not needed to fabricate the electrode, which eliminates the possibility of side reactions associated with a binder. It was demonstrated that the hollow tubular structure with a large inner diameter is highly effective for accommodating a substantial amount of discharge products without hindering the mass transfer of reactants, even under the fully discharged condition. The reversibility and rate capability were improved by optimizing the length of the fiber. The nitrogen-doped carbon reduced the overall overpotential between the oxygen reduction and oxygen evolution reactions. Therefore, the nitrogen-doped hollow carbon fiber can be used to obtain a highly effective oxygen electrode for Li-O2 batteries.

AB - A nitrogen-doped hollow carbon fiber was prepared using polydopamine and electrospun polystyrene fibers as a sacrificial template for the oxygen electrode of Li-O2 batteries. Owing to the fiber structure, a binder is not needed to fabricate the electrode, which eliminates the possibility of side reactions associated with a binder. It was demonstrated that the hollow tubular structure with a large inner diameter is highly effective for accommodating a substantial amount of discharge products without hindering the mass transfer of reactants, even under the fully discharged condition. The reversibility and rate capability were improved by optimizing the length of the fiber. The nitrogen-doped carbon reduced the overall overpotential between the oxygen reduction and oxygen evolution reactions. Therefore, the nitrogen-doped hollow carbon fiber can be used to obtain a highly effective oxygen electrode for Li-O2 batteries.

UR - http://www.scopus.com/inward/record.url?scp=85073876402&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85073876402&partnerID=8YFLogxK

U2 - 10.1149/2.1101914jes

DO - 10.1149/2.1101914jes

M3 - Article

AN - SCOPUS:85073876402

VL - 166

SP - A3425-A3431

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

IS - 14

ER -