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Solid polymer electrolytes reinforced by electrospun poly(ether imide) membrane for all-solid-state lithium batteries

Title
Solid polymer electrolytes reinforced by electrospun poly(ether imide) membrane for all-solid-state lithium batteries
Other Titles
폴리에테르이미드 기반 전기방사막으로 강화된 전고체 리튬 이차전지용 고체 고분자 전해질
Author
Seo, Ye Rin
Alternative Author(s)
서예린
Advisor(s)
김동원
Issue Date
2019-02
Publisher
한양대학교
Degree
Master
Abstract
Poly(ε-caprolactone) (PCL)-based solid polymer electrolytes were prepared, and their electrochemical properties were investigated. The optimized polymer electrolyte showed ionic conductivities of 2.5 ⅹ 10-5 and 2.2 ⅹ 10-4 S/cm at room temperature and 55 ℃ and exhibited good electrochemical stability. To improve dimensional stability, PCL-based polymer electrolyte was infiltrated into thermally reinforced the porous electrospun poly(ether imide) (PEI) membrane. A solid-state Li/LiNi0.6Co0.2Mn0.2O2 cell assembled with PCL-based solid polymer electrolyte in electrospun PEI membrane exhibited an initial discharge capacity of 174.6 mAh/g and good capacity retention. Good cycling performance of the cell resulted from the high ionic conductivity and its good interfacial contacts with electrodes.
URI
https://repository.hanyang.ac.kr/handle/20.500.11754/99845http://hanyang.dcollection.net/common/orgView/200000434719
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > CHEMICAL ENGINEERING(화학공학과) > Theses (Master)
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