Method of Producing Solid-State Battery Pack Comprising Internally Connected Bipolar Electrodes

A substantially liquid solvent-free method of producing a bipolar battery pack, comprising: (a) providing a first set of multiple bipolar electrodes and at least one or multiple ion-permeable separator layers, wherein the bipolar electrode comprises (i) a current collector; (ii) a cathode layer (prepared using a solid-state method) disposed on a first primary surface; and (iii) an anode layer deposited on the opposing primary surface; (b) stacking the bipolar electrodes alternately with the separator layers for connecting the multiple bipolar electrodes in series to form a stack in such a manner that a separator is disposed between the anode layer of a bipolar electrode and the cathode layer of a neighboring bipolar electrode; (c) applying a pressure and/or heat to the stack to consolidate the stack for forming a battery module; and (d) optionally encasing the module with a protective housing to form a pack.