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http://dx.doi.org/10.5229/JKES.2017.20.2.41

Nano Ceramic Coating on Polypropylene Separator for Safety-Enhanced Lithium Secondary Battery  

Lee, Jungmo (Department of Chemical and Biological Engineering, Hanbat National University)
Jeon, Hyunkyu (Department of Chemical and Biological Engineering, Hanbat National University)
Han, Taeyeong (Department of Chemical and Biological Engineering, Hanbat National University)
Ryou, Myung-Hyun (Department of Chemical and Biological Engineering, Hanbat National University)
Lee, Yong Min (Department of Chemical and Biological Engineering, Hanbat National University)
Publication Information
Journal of the Korean Electrochemical Society / v.20, no.2, 2017 , pp. 41-48 More about this Journal
Abstract
Herein, we have fabricated an ultrathin aluminum oxide ($Al_2O_3$) coated PP separator by using a RF sputter deposition process. Approximately 20 nm thickness coating layer on the bare PP separator was formed at the power of 55 W for 2 minutes without thermal damage. Whereas only permeability of the coated separator was degraded slightly, other properties such as thermal stability, uptake amount of liquid electrolyte, and ionic conductivity were improved comparing to the bare PP separator. As a result, an only 20-nm-thick $Al_2O_3$ coating layer could improve the rate capability compared with a bare PP separator under a high current density.
Keywords
Ceramic coated separator; RF sputter; Thermal stability; Lithium secondary battery;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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