MOF/MWCNT-coated Polyethylene Separator for Improving the Cycling Performance of the Lithium-Sulfur Cells

Title
MOF/MWCNT-coated Polyethylene Separator for Improving the Cycling Performance of the Lithium-Sulfur Cells
Author
이대희
Alternative Author(s)
LEE, DAE HEE
Advisor(s)
김동원
Issue Date
2018-02
Publisher
한양대학교
Degree
Master
Abstract
Lithium-sulfur batteries have a higher theoretical energy density than those of conventional lithium-ion batteries and are therefore considered as one of the most promising candidates for future batteries. However, practical applications of lithium-sulfur batteries are still hindered by the dissolution of polysulfides from the sulfur cathode and their migration to the lithium anode through the separator. In this work, we demonstrate that a functionalized separator for lithium polysulfide trapping by coating Ni-MOF-74 (NOF) and multi-walled carbon nanotubes (MWCNT) on a polyethylene separator prevented the shuttle effect by effectively suppressing the polysulfides migration to the lithium anode. As a result, the lithium-sulfur cell assembled with functionalized separator exhibited high discharge capacity and enhanced cycling stability, with a reversible capacity of about 1200 mAh g-1 at 0.2 C after 300 cycles.
URI
http://www.dcollection.net/handler/hanyang/000000105257http://repository.hanyang.ac.kr/handle/20.500.11754/68690
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > CHEMICAL ENGINEERING(화학공학과) > Theses (Master)
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