 Abstract batteries using potassium metal, K-metal, anode are considered a new type of low-cost and high-energy storage device. However, the thermodynamic instability of the K-metal anode in organic electrolyte solutions causes uncontrolled dendritic growth and parasitic reactions leading to rapid capacity loss and low-coulombic efficiency of K-metal batteries. To address this issue, an advanced electrolyte consisting of 1 m-potassium bis, fluorosulfonyl, Illinois, KFSI, plus 0.05 m-potassium hexafluorophosphate, KPF6, dissolved in dimethoxyethane, DME, was introduced as a simple and effective strategy for regulating salvation chemistry. This electrolyte solution reduces the number of solvent molecules surrounding the K-ion and simultaneously leads to facile K, plus desolvation during the electro-deposition process. As a result, the exchange current density between the electrolyte and K-metal anode is reduced, which improves the uniformity of K-electro-deposition, as well as potentially suppress. This article was authored by Jimman Park, Guangino, Unhayak Kim and others. We are article.tv, links in the description below.