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High performance composite polymer electrolytes for lithium-ion polymer cells composed of a graphite negative electrode and LiFePO4 positive electrode

Title
High performance composite polymer electrolytes for lithium-ion polymer cells composed of a graphite negative electrode and LiFePO4 positive electrode
Author
김동원
Keywords
BATTERIES; SILICA; NANOPARTICLES
Issue Date
2015-05
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v. 5, NO 24, Page. 18359-18366
Abstract
Core-shell structured SiO2 particles with different core diameters were synthesized by radical polymerization of 4-styrenesulfonic acid sodium salt with vinyl-functionalized SiO2 core particles and were used as Li+ ion-conducting fillers in composite polymer electrolytes. Composite polymer electrolytes prepared with core-shell SiO2 particles exhibited high ionic conductivity exceeding 10(-3) S cm(-1) at room temperature and good mechanical properties, allowing the preparation of a free-standing film with a thickness of 30 mu m. Lithium-ion polymer cells composed of graphite negative electrode, composite polymer electrolyte and LiFePO4 positive electrode were assembled, and their cycling performance was evaluated. Cells assembled with a composite polymer electrolyte containing core-shell SiO2 particles with a core diameter of 250 nm exhibited good cycling performance in terms of discharge capacity, capacity retention and rate capability.
URI
http://pubs.rsc.org/en/Content/ArticleLanding/2015/RA/C4RA15767B#!divAbstracthttp://hdl.handle.net/20.500.11754/25203
ISSN
2046-2069
DOI
10.1039/C4RA15767B
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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