Facile and scalable fabrication of high-energy-density sulfur cathodes for pragmatic lithium-sulfur batteries

Min Seop Kim, Mun Sek Kim, Vandung Do, Yongyao Xia, Woong Kim, Won Il Cho

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Lithium-sulfur battery is garnering much of attention due to its high energy densities, low-cost active material of sulfur and variety of applications in portable electronics. High integrity and consistent qualities of the large-scale sulfur cathode with high energy have to be ensured to construct reliable and practical lithium-sulfur batteries that could supersede advancing lithium-ion batteries. Here, facile and productive approaches are developed to mass-produce functional sulfur hosts and to fabricate large-scale sulfur cathode with high sulfur loading. The functional sulfur host is synthesized by anchoring polyethylenimine at the surface of commercially available carbon at inert conditions with a scale of more than 10 g per batch via simple solution method. Combining the functionalized sulfur host with a polyacrylic acid binder allows high integrity and uniformity of the high sulfur loading cathode to be fabricated in large dimensions. Followed by this approach, the sulfur cathode, 70 × 6 cm 2 , is produced with the sulfur loading of >4.3 mg cm −2 . It is found that 12 wt% of polyethylenimine in the functionalized sulfur host with polyacrylic acid is at optimal condition that presents stable electrochemical performances over 600 cycles.

Original languageEnglish
Pages (from-to)104-112
Number of pages9
JournalJournal of Power Sources
Volume422
DOIs
Publication statusPublished - 2019 May 15

Fingerprint

lithium sulfur batteries
Sulfur
Cathodes
sulfur
flux density
cathodes
Fabrication
fabrication
carbopol 940
Polyethyleneimine
integrity
Lithium sulfur batteries
acids
Acids
Binders
electric batteries

Keywords

  • Large-scale sulfur cathode
  • Lithium-sulfur batteries
  • Polar binder
  • Surface functionalization

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Facile and scalable fabrication of high-energy-density sulfur cathodes for pragmatic lithium-sulfur batteries. / Kim, Min Seop; Kim, Mun Sek; Do, Vandung; Xia, Yongyao; Kim, Woong; Cho, Won Il.

In: Journal of Power Sources, Vol. 422, 15.05.2019, p. 104-112.

Research output: Contribution to journalArticle

Kim, Min Seop ; Kim, Mun Sek ; Do, Vandung ; Xia, Yongyao ; Kim, Woong ; Cho, Won Il. / Facile and scalable fabrication of high-energy-density sulfur cathodes for pragmatic lithium-sulfur batteries. In: Journal of Power Sources. 2019 ; Vol. 422. pp. 104-112.
@article{c8752dbbfde240c38914bac8ebfd9ac5,
title = "Facile and scalable fabrication of high-energy-density sulfur cathodes for pragmatic lithium-sulfur batteries",
abstract = "Lithium-sulfur battery is garnering much of attention due to its high energy densities, low-cost active material of sulfur and variety of applications in portable electronics. High integrity and consistent qualities of the large-scale sulfur cathode with high energy have to be ensured to construct reliable and practical lithium-sulfur batteries that could supersede advancing lithium-ion batteries. Here, facile and productive approaches are developed to mass-produce functional sulfur hosts and to fabricate large-scale sulfur cathode with high sulfur loading. The functional sulfur host is synthesized by anchoring polyethylenimine at the surface of commercially available carbon at inert conditions with a scale of more than 10 g per batch via simple solution method. Combining the functionalized sulfur host with a polyacrylic acid binder allows high integrity and uniformity of the high sulfur loading cathode to be fabricated in large dimensions. Followed by this approach, the sulfur cathode, 70 × 6 cm 2 , is produced with the sulfur loading of >4.3 mg cm −2 . It is found that 12 wt{\%} of polyethylenimine in the functionalized sulfur host with polyacrylic acid is at optimal condition that presents stable electrochemical performances over 600 cycles.",
keywords = "Large-scale sulfur cathode, Lithium-sulfur batteries, Polar binder, Surface functionalization",
author = "Kim, {Min Seop} and Kim, {Mun Sek} and Vandung Do and Yongyao Xia and Woong Kim and Cho, {Won Il}",
year = "2019",
month = "5",
day = "15",
doi = "10.1016/j.jpowsour.2019.02.093",
language = "English",
volume = "422",
pages = "104--112",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",

}

TY - JOUR

T1 - Facile and scalable fabrication of high-energy-density sulfur cathodes for pragmatic lithium-sulfur batteries

AU - Kim, Min Seop

AU - Kim, Mun Sek

AU - Do, Vandung

AU - Xia, Yongyao

AU - Kim, Woong

AU - Cho, Won Il

PY - 2019/5/15

Y1 - 2019/5/15

N2 - Lithium-sulfur battery is garnering much of attention due to its high energy densities, low-cost active material of sulfur and variety of applications in portable electronics. High integrity and consistent qualities of the large-scale sulfur cathode with high energy have to be ensured to construct reliable and practical lithium-sulfur batteries that could supersede advancing lithium-ion batteries. Here, facile and productive approaches are developed to mass-produce functional sulfur hosts and to fabricate large-scale sulfur cathode with high sulfur loading. The functional sulfur host is synthesized by anchoring polyethylenimine at the surface of commercially available carbon at inert conditions with a scale of more than 10 g per batch via simple solution method. Combining the functionalized sulfur host with a polyacrylic acid binder allows high integrity and uniformity of the high sulfur loading cathode to be fabricated in large dimensions. Followed by this approach, the sulfur cathode, 70 × 6 cm 2 , is produced with the sulfur loading of >4.3 mg cm −2 . It is found that 12 wt% of polyethylenimine in the functionalized sulfur host with polyacrylic acid is at optimal condition that presents stable electrochemical performances over 600 cycles.

AB - Lithium-sulfur battery is garnering much of attention due to its high energy densities, low-cost active material of sulfur and variety of applications in portable electronics. High integrity and consistent qualities of the large-scale sulfur cathode with high energy have to be ensured to construct reliable and practical lithium-sulfur batteries that could supersede advancing lithium-ion batteries. Here, facile and productive approaches are developed to mass-produce functional sulfur hosts and to fabricate large-scale sulfur cathode with high sulfur loading. The functional sulfur host is synthesized by anchoring polyethylenimine at the surface of commercially available carbon at inert conditions with a scale of more than 10 g per batch via simple solution method. Combining the functionalized sulfur host with a polyacrylic acid binder allows high integrity and uniformity of the high sulfur loading cathode to be fabricated in large dimensions. Followed by this approach, the sulfur cathode, 70 × 6 cm 2 , is produced with the sulfur loading of >4.3 mg cm −2 . It is found that 12 wt% of polyethylenimine in the functionalized sulfur host with polyacrylic acid is at optimal condition that presents stable electrochemical performances over 600 cycles.

KW - Large-scale sulfur cathode

KW - Lithium-sulfur batteries

KW - Polar binder

KW - Surface functionalization

UR - http://www.scopus.com/inward/record.url?scp=85062893934&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062893934&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2019.02.093

DO - 10.1016/j.jpowsour.2019.02.093

M3 - Article

AN - SCOPUS:85062893934

VL - 422

SP - 104

EP - 112

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

ER -