Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1290614 | Journal of Power Sources | 2008 | 5 Pages |
Abstract
In this presentation we describe the preparation of solvent-free solid polymer electrolytes (SPEs) by the sol-gel route with the incorporation of controlled quantities of lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) into the host matrix. The host framework of these xerogels, designated as di-ureasils and represented by d-U(900), contains oxyethylene oligomers with about 15 repeat units bonded at each end to a siliceous backbone through urea bridging links. Electrolytes were characterized by ionic conductivity measurements, cyclic voltammetry at a gold microelectrode and thermal analysis. The results obtained reveal that these hybrid materials are completely amorphous and exhibit appropriate electrochemical characteristics for a variety of applications.
Related Topics
Physical Sciences and Engineering
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Electrochemistry
Authors
P.C. Barbosa, L.C. Rodrigues, M.M. Silva, M.J. Smith,