Patent ID: 6753114
Filing Date: 2004-06-22
Classification: H01M,Y02E

Abstract:
A composite electrolyte for a rechargeable lithium battery comprising:an inert first laminate layer of a first polymer, having a multiplicity of pores including walls and two major faces, and having an adherent, porous, solid, second layer of a second polymer deposited on at least one of said major faces, said adherent, porous, solid, second polymer layer containing a first lithium compound having dissociable lithium ions, wherein said adherent, porous, solid, second polymer layer partially fills one portion of said multiplicity of pores of said inert first laminate layer, thereby providing a composite polymer structure of at least two polymer layers having a second portion of said pores unfilled, and wherein said unfilled second portion of said pores of said composite polymer structure is impregnated with an organic liquid containing a second lithium compound having dissociable lithium ions.