Composite electrolyte for a rechargeable lithium battery
First Claim
1. 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.
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Accused Products
Abstract
The composite electrolyte for use in a thin plate rechargeable lithium battery comprises a porous or microporous inert polymer separator laminate which carries another porous polymer containing a dissociable lithium compound, and the adherent polymer layers are impregnated with an organic liquid containing a lithium salt. The porous or microporous separator laminate may be a single polymer layer or a multiple polymer layer. The composite electrolyte is inserted between the electrodes of a rechargeable lithium battery. In another embodiment the porous polymer separator sheet has an adherent dissociable lithium compound containing polymer layer on each of its major faces.
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Citations
13 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A rechargeable lithium battery comprising:
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a positive electrode;
a negative electrode; and
a composite electrolyte comprising an inert first laminate layer of a first polymer, having a multiplicity of pores with 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 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. - View Dependent Claims (13)
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Specification