A new type of polymer electrolyte which contains rigid polymer rather
than the flexible low T-g polymers used in conventional polymer electr
olytes is described. The new type of polymer electrolyte exhibits high
ambient temperature conductivity, 10(-4) S cm(-1). Many properties of
this new type of polymer electrolyte are significantly different from
those of conventional polymer electrolytes. For example, addition of
salt usually softens these new polymer systems instead of stiffening t
he polymers, as in conventional polymer electrolytes.