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Lithium-ion polymer cells assembled with a reactive composite separator containing vinyl-functionalized SiO2 particles

Title
Lithium-ion polymer cells assembled with a reactive composite separator containing vinyl-functionalized SiO2 particles
Author
김동원
Keywords
Reactive composite separator; Vinyl-functionalized SiO2; In-situ cross-linking; Lithium-ion polymer cells; Thermal stability
Issue Date
2015-11
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v. 295, Page. 149-155
Abstract
Vinyl-functionalized SiO2 particles of different sizes are synthesized and coated onto both sides of a polyethylene separator to prepare a reactive composite separator for lithium-ion polymer cells. The SiO2-coated composite separators exhibit excellent thermal stability due to the presence of heat-resistant silica particles. By using these reactive composite separators and a gel electrolyte precursor, lithium-ion polymer cells composed of a graphite negative electrode and a LiNi1/3Co1/3Mn1/3O2 positive electrode are assembled by in-situ chemical cross-linking, and their cycling performance is evaluated. The cells assembled with a reactive composite separator exhibit superior cycling performance to cell prepared with a conventional polyethylene separator due to the strong interfacial adhesion between the electrodes and separator, as well as suppression of deleterious reactions during cycling. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0378775315300471?via%3Dihubhttp://hdl.handle.net/20.500.11754/29113
ISSN
0378-7753; 1873-2755
DOI
10.1016/j.jpowsour.2015.06.156
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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