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 language | English |
|---|---|
| Pages (from-to) | 104-112 |
| Number of pages | 9 |
| Journal | Journal of Power Sources |
| Volume | 422 |
| DOIs | |
| Publication status | Published - 2019 May 15 |
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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 journal › Article
}
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
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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 -