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http://dx.doi.org/10.5229/JKES.2017.20.3.49

Development of Polyvinyl Alcohol (PVA) Non-woven Separator Coated with ZrO2 Ceramic Nanoparticles for Improving Electrochemical Performance and Thermal Property of Lithium Ion Batteries  

Kim, Ki Jae (Graduate School of Energy and Environment Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Electrochemical Society / v.20, no.3, 2017 , pp. 49-54 More about this Journal
Abstract
We develop a ceramic composite separator prepared by coating $ZrO_2$ nanoparticles with a poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) copolymer on a polyvinyl alcohol (PVA) mechanical support prepared by electrospinning technique to improve thermal properties. The gurley number of the ceramic composite separator shows much lower value than that of a PE separator even though it possesses the polymeric coating layer with ceramic nanoparticles. In addition, the proposed sample shows higher electrolyte uptake than PE separator, leading to enhancing the ionic conductivity of the proposed sample and, by extension, the rate discharge properties of lithium ion batteries. Thermal stability of the ceramic composite separator is dramatically improved without any degradation in electrochemical performance compared to the performance of conventional PE separators.
Keywords
Polyvinyl alcohol (PVA); Nonwoven separator; Thermal property; Ceramic coating; Lithium-ion battery;
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Times Cited By KSCI : 1  (Citation Analysis)
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