NDLI: Development of glass-polymer composite electrolytes for Li-ion cells

Content Provider	IEEE Xplore Digital Library
Author	Jaephil Cho Geunbae Kim Hongsup Lim
Copyright Year	1998
Description	Author affiliation: Samsung Display Devices, ChunAn City, South Korea (Jaephil Cho)
Abstract	A new type of solid-state electrolyte, the glass-polymer composite (GPC) electrolyte, has been developed. The electrochemical behavior of the GPC, consisting of 100-x vol% 0.54 Li/sub 2/S/spl middot/0.21 B/sub 2/S/sub 3//spl middot/0.25 LiI glass and x vol% P(EO)/sub 8//spl middot/LiN(CF/sub 3/SO/sub 2/)/sub 2/ polymer with x=7, 13, and 25, has been investigated. Results show that the addition of polymer to the glass powder increases not only the mechanical flexibility but also the ionic conductivity. The combination of impedance spectroscopy and four-probe DC measurements indicates that the GPC with x=13 vol% polymer exhibits the highest lithium ion conductivity, varying from 3/spl times/10/sup -4/ /spl Omega//sup -1/ cm/sup -1/ at room temperature to 1.4/spl times/10/sup -3/ /spl Omega//sup -1/ cm/sup -1/ at 80/spl deg/C. The evolution of impedance spectra of the cells show that kinetic stability of the GPC electrolytes against Li/sub x/C/sub 6/ and LiMn/sub 2/O/sub 4/ electrodes is reasonably good, although there is an initial increase in interfacial resistance during cycling.
Starting Page	381
Ending Page	385
File Size	315297
Page Count	5
File Format	PDF
ISBN	0780340981
ISSN	10898182
DOI	10.1109/BCAA.1998.653899
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-01-16
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polymers Glass Solid state circuits Powders Electrochemical impedance spectroscopy Conductivity measurement Impedance measurement Lithium Temperature Kinetic theory
Content Type	Text
Resource Type	Article

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