SiOx is a promising material for better lithium-ion batteries, but it loses capacity and changes size too much. By combining pre-lithiation and a special chemical, researchers made a stable layer on SiOx that improved its efficiency and cycling. The modified SiOx anode had a high initial efficiency of 90.7% and worked well over time. When paired with a common cathode, the full battery had an efficiency of 85.7% and stayed stable during use. This study shows a new way to make better lithium-ion batteries.