Patent ID: 7288343

Claim:
A rechargeable battery, comprising at least one anode; at least one cathode, each said cathode being in opposing spaced relationship to each said anode; two layers of differing porous separators/binders intermediate each opposing anode and cathode to maintain said opposing spaced relationship; a non-aqueous electrolyte filling said pores of said layers of separator/binder; wherein: a first separator/binder comprises a mixture of polymer P 1 and a particulate material M 1 , a second separator/binder comprises a mixture of polymer P 2 and a particulate material M 2 , polymer P 1 is soluble to a degree for forming a polymeric solution in a solvent S 1 , polymer P 2 is soluble to a degree for forming a polymeric solution in a solvent S 2 , polymer P 1 remains solid in the presence of solvent S 2 , polymer P 2 remains solid in the presence of solvent S 1 , particulate material M 1 remains solid in the presence of solvent S 1 , particulate material M 2 remains solid in the presence of solvent S 2 , and said opposing spaced relationship of each cathode to each anode is maintained by each anode being bound to the first separator/binder, the first separator/binder being bound to the second separator/binder and the second separator/binder being bound to each cathode.