Composite cell components for elevated temperature all-solid-state Li-ion batteries

Application of Li-ion batteries with liquid electrolytes at elevated temper atures (above 60 degreesC) is limited due to the decomposition of the elect rolyte. Stable solid state electrolytes can solve this problem, but the con ductivity of these electrolytes are relatively low, the interfacial contact s with the electrodes are poor, and the charge transfer kinetics in the ele ctrodes are limited. Solutions for these problems by using composite electr odes and electrolytes have been investigated and the results are described. A new concept for making all-solid-state Li-ion batteries that can be appl ied in the temperature range between room temperature and about 150 degrees C will be presented. (C) 2001 Elsevier Science B.V. All rights reserved.