Journal
ELECTROCHIMICA ACTA
Volume 55, Issue 4, Pages 1347-1354Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.05.025
Keywords
Lithium batteries; Composite polymer electrolytes; Electrospinning; Ceramic filler; Room temperature ionic liquid
Categories
Funding
- National Research Foundation of Korea [2008-2000071, 핵06A1303, 핵C6B1307] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
In view of the safety concerns and the requirements of high energy density lithium batteries, the room temperature ionic liquids (RTILs) are being investigated as suitable candidates to substitute organic electrolytes in polymer electrolytes. In this article, we report synthesis, characterization, and electrochemical properties of nanocomposite polymer electrolytes (NCPEs) comprising of a RTIL [n-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (BMITFSI)] and nano-sized ceramic fillers (SiO2, Al2O3 or BaTiO3) hosted in electrospun poly(vinylidene fluoride-co-hexafluoropropylene) [P(VdF-HFP)] membranes. The addition of BMITFSI and ceramic fillers in polymer electrolytes results in high ionic conductivity at room temperature. The cells prepared with BMITFSI and different NCPEs show good interfacial stability and oxidation stability at >5.5 V with the highest value of 6.0V for the NCPE incorporating BaTiO3. The cell with the NCPE containing BaTiO3 delivers high initial discharge capacity of 165.8 mA h g(-1), which corresponds to 97.5% utilization of active material under the test conditions, and showed the least % capacity fade after prolonged cycling. (C) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available