ISSN:
1042-7147
Keywords:
Polymeric solid electrolyte
;
Battery
;
Crown ether
;
Polysiloxane
;
Crosslinked polymer
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Two approaches for the preparation of highly ionconductive polymeric solid electrolytes have been followed: one was to add crown ether to cross-linked poly(ethylene oxide) grafted methacrylate polymer swollen by lithium salt/propylene carbonate solution; and the other was to select crosslinked poly(dimethylsiloxane) with a low glass transition temperature for the matrix material. The conductivity of the former electrolyte was 3.2 × 10-3 S/cm even in the absence of crown ether at 20°C and increased to 4.0 × 10-3 S/cm by the addition of 15-Crown-5. The addition of crown ether in the electrolyte also affected the plating and stripping processes of Lion Ni substrate. The latter electrolyte was prepared as a single ion type polymeric solid electrolyte. The conductivity of the electrolyte was ca 10-5 S/cm at room temperature. The polarization curves of Li in the electrolyte were symmetric for O V vs. Li/Li+, therefore the plating and stripping of Li electrode in the electrolyte were reversible. The behavior of the latter electrolyte is preferable for rechargeable lithium battery use.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pat.1993.220040223
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