METHODS FOR MAKING SOLID-STATE LITHIUM-ION BATTERIES

A method for making a lithium-ion battery includes constructing a precursor cell having an anode, a cathode and a solid-state electrolyte (SSE). The anode includes a silicon-containing lithium storage layer deposited onto an anode current collector by a CVD or PVD process. The cathode includes a cathode active material layer in contact with a cathode current collector. The SSE is interposed between the lithium storage layer and the cathode active material layer. The precursor cell is electrochemically treated by applying at least a first voltage cycle between the anode and cathode to cause at least a partial charging of the anode, and subsequently, at least a partial discharging of the anode. The precursor cell is heated to a temperature Tof at least 40° C., and after heating, the cell is cooled to a temperature below Tto produce the lithium-ion battery, wherein Tis less than T.