Abstract
The commercialization of Lithium-sulfur batteries was limited by the polysulfide shuttle effect, and modifying the routine separator was an effective method to solve this problem. In this work, a novel hierarchically porous polypyrrole sphere (PPS) was successfully prepared by using silica as hard-templates. As-prepared PPS was slurry-coated on the separator, which could reduce the polarization phenomenon of the sulfur cathode, and efficiently immobilize polysulfides. As expected, high sulfur utilization was achieved by suppressing the shuttle effect. When tested in the lithium-sulfur battery, it exhibited a high capacity of 855 mAh·g-1 after 100 cycles at 0.2 C, and delivered a reversible capacity of 507 mAh·g-1 at 3 C, showing excellent electrochemical performance.
| Original language | English |
|---|---|
| Article number | 1344 |
| Journal | Polymers |
| Volume | 11 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 1 2019 |
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Keywords
- Electrochemical performance
- Hierarchically porous polypyrrole sphere
- Lithium-sulfur batteries
- Separator
- Shuttle effect
ASJC Scopus subject areas
- Chemistry(all)
- Polymers and Plastics
Cite this
A novel hierarchically porous polypyrrole sphere modified separator for Lithium-sulfur batteries. / Li, Baoe; Sun, Zhenghao; Zhao, Yan; Bakenov, Zhumabay.
In: Polymers, Vol. 11, No. 8, 1344, 01.08.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A novel hierarchically porous polypyrrole sphere modified separator for Lithium-sulfur batteries
AU - Li, Baoe
AU - Sun, Zhenghao
AU - Zhao, Yan
AU - Bakenov, Zhumabay
PY - 2019/8/1
Y1 - 2019/8/1
N2 - The commercialization of Lithium-sulfur batteries was limited by the polysulfide shuttle effect, and modifying the routine separator was an effective method to solve this problem. In this work, a novel hierarchically porous polypyrrole sphere (PPS) was successfully prepared by using silica as hard-templates. As-prepared PPS was slurry-coated on the separator, which could reduce the polarization phenomenon of the sulfur cathode, and efficiently immobilize polysulfides. As expected, high sulfur utilization was achieved by suppressing the shuttle effect. When tested in the lithium-sulfur battery, it exhibited a high capacity of 855 mAh·g-1 after 100 cycles at 0.2 C, and delivered a reversible capacity of 507 mAh·g-1 at 3 C, showing excellent electrochemical performance.
AB - The commercialization of Lithium-sulfur batteries was limited by the polysulfide shuttle effect, and modifying the routine separator was an effective method to solve this problem. In this work, a novel hierarchically porous polypyrrole sphere (PPS) was successfully prepared by using silica as hard-templates. As-prepared PPS was slurry-coated on the separator, which could reduce the polarization phenomenon of the sulfur cathode, and efficiently immobilize polysulfides. As expected, high sulfur utilization was achieved by suppressing the shuttle effect. When tested in the lithium-sulfur battery, it exhibited a high capacity of 855 mAh·g-1 after 100 cycles at 0.2 C, and delivered a reversible capacity of 507 mAh·g-1 at 3 C, showing excellent electrochemical performance.
KW - Electrochemical performance
KW - Hierarchically porous polypyrrole sphere
KW - Lithium-sulfur batteries
KW - Separator
KW - Shuttle effect
UR - http://www.scopus.com/inward/record.url?scp=85071154409&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85071154409&partnerID=8YFLogxK
U2 - 10.3390/polym11081344
DO - 10.3390/polym11081344
M3 - Article
AN - SCOPUS:85071154409
VL - 11
JO - Polymers
JF - Polymers
SN - 2073-4360
IS - 8
M1 - 1344
ER -