Solid-state lithium ion multilayer battery and manufacturing method

Abstract

Provided herein are multilayer solid-state lithium ion batteries and methods of fabrication. In some embodiments, units of preformed cell elements and a current collector (of either the anode or cathode) are stacked. The preformed cell element includes a double-sided electrode, with separator/electrode on both sides of the double-sided electrode. The double-sided electrode may be an anode or a cathode. During the stacking process, the preformed cell elements are laminated to a cathode current collector or an anode current collector, as appropriate.

1 . A solid-state multilayer lithium ion battery comprising:
 a plurality of preformed cell elements, each preformed cell element comprising a second electrode/separator/first electrode/first current collector/first electrode/separator/second electrode stack, wherein the first electrode is one of an anode composite film and a cathode composite film, the second electrode is the other of the anode composite film and the cathode composite film, and the separator is a composite electrolyte separator (CES);   a plurality of second current collectors disposed between preformed cell elements and laminated to the second electrodes; and   conductive adhesive layers between the second electrodes and the adjacent second current collectors.   
     
     
         2 . The battery of  claim 2 , wherein the anode composite film comprises an active material, an electrolyte, and a polymer binder. 
     
     
         3 . The battery of  claim 2 , wherein the cathode composite film comprises an active material, an electrolyte, and a polymer binder. 
     
     
         4 . The battery of  claim 2 , wherein the CES comprises an inorganic particulate ion conductor and an organic polymer. 
     
     
         5 . The battery of  claim 2 , wherein the conductive adhesive layers comprise carbon additive is dispersed in a thermoplastic polymer.