The electrochemical properties of poly(acrylonitrile) (PAN)-based poly
mer electrolyte and the discharge characteristics of an Li/LiCoO2 cell
were investigated. The PAN-based polymer electrolyte maintained an io
nic conductivity of 1 mS/cm at room temperature, irrespective of stora
ge time. Also, this electrolyte showed high electrochemical stability
up to 4.3 V (versus Li+/Li). An Li/LiCoO2 cell battery with this elect
rolyte has been fabricated and tested. This battery showed good cyclin
g performance. (C) 1997 Published by Elsevier Science S.A.