on Ionic Conductivity. 6. PERFORMING ORG. REPORT NUMBER • AUTHOR(e) I. CONTRACT OR GRANT NUMBER(e)

16. DISTRiBUTION STATEMENT (of this Report) Approved for public release and sale. Distribution unlimited. I. SUPPLEMENTARY NOTES, Submitted to Electrochem. Society for publication. 19. KEY WORDS (Continue on reveres aide If neceeary md Identify by block number) polymer electrolytes, polyethyleneimine, polymer salt complexes, ionic conductivity, polyphosphazene-poly(ethylene glycol) copolymer \ 0. ABSTRACT (Continue on revere aide It neceeery e nd Identify by block number) A series of fully substituted poly(phosphazenes) with alkoxy sidechains, and/or dialkoxy crosslinks were synthesized and investigated as electrolyte host materials. All of the polymers readily formed complexes with LISO CF we 1 3.3'LISOC.'F and Li(SO.'d F^. The polymer with seven ether oxygens in its sidechain gives the gighesi conducting polymer salt complex at 30 "C. The crosslinked polymers were found to be totally amorphous with comparabl