Molecular and anionic polymer and oligomer systems with microdecoupled conductivities

We describe two different approaches to the problem of decoupling ions in p olymer electrolytes from the chain segmental motions in order to obtain hig h conductivities even close to the glass transition temperature. In one of the two, the ions are also decoupled from each other so that single ion con ducting materials can be obtained. The first method involves the use of pol ymeric anions while the second uses side-chain secondary relaxation as the principle behind the fast motion. Neither principle is new but the performa nce seems to be quite good in the cases described. (C) 2000 Elsevier Scienc e Ltd. All rights reserved.