 The study quantifies leek erosion and SEI progression in typical electrolytes using devised electrochemical tools and Creo-electron microscopy and reveals a positive correlation between continuous leek erosion and SEI dissolution. An anti-corrosion and interface stabilizing artificial passivation layer is designed to reduce leek erosion by 74% resulting in prolonged operations of leek symmetric cells and leelieffepo for cells. The success can be extended to ampere scale pouch cells, enabling the durable operation of leek metal batteries by reducing leeloss. This article was authored by Chen Binjin, Yuhuang, Lanhang Li, and others.