Method for forming an electrode-electrolyte assembly

A method for forming an electrode-electrolyte assembly for incorporation in a rechargeable lithium battery compring the steps of:

• i) providing a first polymer laminate having embedded therein an electronically conductive carbonaceous substance, said first polymer laminate having parallel faces and being impervious to water, said first polymer laminate being permeable to electrons;
• ii) agglomerating fine particles of an oxide capable of incorporating lithium, with a lithium compound containing organic binder, said oxide being selected from the group consisting of vanadium oxide, manganese oxide, cobalt oxide, nickel oxide and silver-vanadium oxide, and providing a continuous layer of the agglomerated fine particles of oxide so obtained on one of said parallel faces of said first polymer laminate, said continuous layer having thickness in excess of 0.5 mm, thereby forming a lithium containing positive electrode;
• iii) providing a second polymer laminate having parallel faces, said second polymer laminate being non-conductive of electrons, said second polymer laminate having a lithium compound dissolved therein in a first concentration, said lithium compound being capable of releasing mobile lithium ions, thereby forming a lithium ion-conductive solid polymer laminate electrolyte;
• iv) providing a lithium ion containing fluid adhesive mixture and disposing said fluid adhesive mixture to form a lithium ion containing adhesive coating on at least a portion of one of the parallel faces of said lithium ion-conductive solid polymer laminate electrolyte, said fluid adhesive mixture containing a lithium compound in a second concentration, said second lithium compound concentration being less than said first lithium compound concentration;
• and
• v) bringing into contact said lithium ion containing adhesive coating disposed on one of said parallel faces of said lithium ion-conductive solid polymer laminate electrolyte with said continuous layer of fine particles of said oxide agglomerated with a lithium compound containing organic binder located on one of said parallel faces of said first polymer laminate comprised in said lithium containing positive electrode, thereby forming a lithium containing electrode-electrolyte assembly adherent to one another.

A method for forming an electrode-electrolyte assembly for incorporation in a rechargeable lithium battery, comprising the steps of:

• i) providing a first polymer laminate having embedded therein an electronically conductive carbonaceous substance, said first polymer laminate having parallel faces and being impervious to water, said first polymer laminate being permeable to electrons;
• ii) agglomerating particles of fine carbon capable of intercalating lithium, with a lithium compound containing organic binder, and providing a continuous layer of the agglomerated particles of fine carbon so obtained on one of said parallel faces of said first polymer laminate, said continuous layer having thickness in excess of 0.5 mm, thereby forming a lithium containing negative electrode;
• iii) providing a microporous polymer laminate separator having a pair of parallel faces, and impregnating an area of said microporous polymer laminate separator with an organic liquid containing a lithium compound in a first concentration, said lithium compound being capable of releasing lithium ions, said impregnated area of said microporous polymer laminate separator substantially corresponding to said agglomerated layer of particles of fine carbon located on one of the parallel faces of said first polymer laminate comprised in said lithium containing negative electrode, said microporous polymer laminate separator being non-conductive of electrons and lithium ions;
• iv) providing a lithium ion containing fluid adhesive mixture and disposing said mixture to form a lithium ion containing adhesive coating on at least a portion of one of the parallel faces of said impregnated area of said microporous polymer laminate separator, said fluid adhesive mixture containing a lithium compound in a second concentration, said second lithium compound concentration being less than said first lithium compound concentration;
• and
• v) bringing into contact said lithium ion containing adhesive coating disposed on one of said parallel faces of said impregnated area of said microporous polymer laminate separator with said continuous layer of fine carbon agglomerated with a lithium compound containing organic binder located on one of said parallel faces of said first polymer laminate comprised in said lithium containing negative electrode, thereby forming a lithium containing electrode-electrolyte assembly adherent to one another.

A method for forming an electrode-electrolyte assembly for incorporation in a rechargeable lithium battery, comprising the steps of:

• i) providing a first polymer laminate having embedded therein an electronically conductive carbonaceous substance, said first polymer laminate having parallel faces and being impervious to water, said first polymer laminate being permeable to electrons;
• ii) agglomerating fine particles of an oxide capable of incorporating lithium, with a lithium compound containing organic binder, said oxide being selected from the group consisting of vanadium oxide, manganese oxide, cobalt oxide, nickel oxide and silver-vanadium oxide, and providing a continuous layer of the agglomerated fine particles of oxide so obtained on one of said parallel faces of said first polymer laminate, said continuous layer having thickness in excess of 0.5 mm, thereby forming a lithium containing positive electrode;
• iii) providing a microporous polymer laminate separator having a pair of parallel faces, and impregnating an area of said microporous polymer laminate separator with an organic liquid containing a lithium compound in a first concentration, said lithium compound being capable of releasing lithium ions, said impregnated area of said microporous polymer laminate separator substantially corresponding to said agglomerated layer of fine particles of said oxide located on one of the parallel faces of said first polymer laminate comprised in said lithium containing positive electrode, said microporous polymer laminate separator being non-conductive of electrons and lithium ions;
• iv) providing a lithium ion containing fluid adhesive mixture and disposing said mixture to form a lithium ion containing adhesive coating on at least a portion of one of the parallel faces of said impregnated area of said microporous polymer laminate separator, said fluid adhesive mixture containing a lithium compound in a second concentration, said second lithium compound concentration being less than said first lithium compound concentration;
• and
• v) bringing into contact said lithium ion containing adhesive coating disposed on one of said parallel faces of said impregnated area of said microporous polymer laminate separator with said continuous layer of fine particles of said oxide agglomerated with a lithium compound containing organic binder located on one of said parallel faces of said first polymer laminate comprised in said lithium containing positive electrode, thereby forming a lithium containing electrode-electrolyte assembly adherent to one another.