PRE-LITHIATION OF ALL-SOLID-STATE BATTERIES

Systems, methods, and devices for producing a pre-lithiated all-solid-state battery cell are described. This includes obtaining a pre-lithiation anode slurry, coating the pre-lithiation slurry onto a current collector, evaporating the solvent of the pre-lithiation anode slurry to produce an intermediate assembly including the current collector, calendaring an anode via applying pressure to the intermediate assembly to produce a calendared anode assembly, and assembling an all-solid-state battery cell that includes the calendared anode assembly therein. The pre-lithiation anode slurry includes a lithium salt configured to activate an interface lithiation reaction with the electroactive material and a non-aqueous solvent configured to maintain the lithium salt in solution. The pre-lithiation anode slurry can be coated onto a lithium-foil-laminated current collector or further mixed with solid lithium materials before coating onto the current collector. The pre-lithiated all-solid-state battery cell may include lithium metal between the anode layer and the anode current collector.