Ceramic-polymer interface in composite electrolytes of lithium aluminium titanium phosphate and polyetherurethane polymer electrolyte

Composite electrolytes of the lithium-ion-conducting ceramic Li 1.3Al 0.3Ti 1.7(PO 4) 3 and polyetherurethane/lithium triflate polymer electrolyte have been prepared. Microscopy has shown that adhesion between the ceramic and polymer phases is poor, with gaps up to 1 μm at the interface. When dry, t...

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Bibliographic Details
Published in:Solid state ionics 1999, Vol.121 (1), p.115-119
Main Authors: Nairn, K.M, Best, A.S, Newman, P.J, MacFarlane, D.R, Forsyth, M
Format: Article
Language:English
Subjects:
Chemistry
Electrochemistry
Exact sciences and technology
General and physical chemistry
Properties of electrolytes: conductivity
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Summary:Composite electrolytes of the lithium-ion-conducting ceramic Li 1.3Al 0.3Ti 1.7(PO 4) 3 and polyetherurethane/lithium triflate polymer electrolyte have been prepared. Microscopy has shown that adhesion between the ceramic and polymer phases is poor, with gaps up to 1 μm at the interface. When dry, the composites are no more conductive than the pure polymer electrolyte. Exposing the samples to the vapour of solvents such as DMF, acetonitrile or water produces a significant increase in conductivity, over and beyond simple plasticization of the polymer. Pretreating the ceramic with a compatibilizing agent improves adhesion at the interface with the polymer, but decreases overall conductivity in the case investigated.
ISSN:0167-2738
1872-7689
DOI:10.1016/S0167-2738(98)00537-2