Anion trapping polymer electrolytes incorporating boroxine (B3O3) rings and
oligoether side chains have been demonstrated to combine high Li+ ion tran
sference numbers, thermal stability and an electrochemical stability window
in the region of 4.9 V. Ionic conductivities of up to 1.6 X 10(-5) S cm(-1
) at 30 degrees C and which exhibit Volger-Tamman-Fulcher (VTF) behaviour h
ave been observed. (C) 1999 Elsevier Science S.A. All rights reserved.