Abstract: A method for forming a solid-state battery includes preparing a cell, heating the cell to a first temperature, and cycling the cell while maintaining the cell at the first temperature and/or while the cell is cooled to room temperature from the first temperature. The cell includes a solid-state electrolyte adjacent to a negative electrode, including a negative electroactive material selected from the group consisting of: lithium metal, lithium alloys, silicon, silicon alloys, and combinations thereof. The first temperature is between about 50° C. and about 175° C. The cell is cycled for between about 1 cycle and about 10 cycles, where current densities are between about 0.01 mA/cm2 and about 10 mA/cm2, and capacity per cycle between about 0.01 mAh/cm2 and about 1 mAh/cm2.