Abstract
In this paper, a concept and structural characterization of novel class of composite polymeric electrolytes is systematically presented. These are polymer-in-ceramic composites consisting of porous alumina matrices, distinguished by different pore architectures (anodized alumina with narrow and well-ordered parallel pores as well as random structures obtained by various methods from alumina grains by sintering); and a complex of lithium tetraoxochlorate and poly(oxyethylene) of different molecular weight. These new electrolytes exhibit room temperature conductivities exceeding 10−3 S·cm−1, low resistance of the interface with lithium electrode, excellent thermal and electrochemical stability. We show combined structural (environmental XRD), thermal and conductivity studies on composite electrolyte systems that were never published before and provide a new explanation of the enhancement of conductivity at subambient temperatures. Feasibility of cells employing electrodes prepared directly on the electrolyt...
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