Patent ID: 6605237
Filing Date: 2003-08-12
Classification: C08G,H01M,Y02E

Abstract:
A co-substituted linear phosphazene polymer having the formula:â€”(NPRRâ€²)qâ€”where R and Râ€², independently, and in any combination, represent side chain groups on a linear phosphazene chain and q, which is the number of moles of monomer units in the polymer, is from about 2 to about 20,000; provided, however, (a) that at least a portion of the R groups impart ionic conductance to the polymer, (b) that at least a portion of the Râ€² groups are fluorine-containing or Si-containing non-conductive hydrophobic groups that provide the polymer with mechanical stability, and (c) that the polymer is capable of functioning as the sole polymer component of a gel electrolyte system having a conductance at room temperature of at least about 10âˆ’5 S/cm.