The　uncontrolled　growth　of　dendritic　lithium　on　the　lithium　surface　negatively　impacts　the　lifespan　of　lithium　metal　batteries　due　to　the　instability　of　the　solid　electrolyte　interphase　(SEI).　This　paper　introduces　the　concept　of　incorporating　lithium-fluoride　(LiF)　salt　into　lithium　metal　to　promote　the　formation　of　a　LiF-rich　interphase　through　a　dissolution　and　re-deposition　process,　resulting　in　longer　cycling　lithium　metal　batteries.　Solid　salt,　LiF,　is　integrated　into　the　entire　bulk　phase　of　lithium　metal　using　a　simple　and　cost-effective　mechanical　rolling　method.　The　surface　LiF　particles　on　the　lithium　metal　prevent　direct　reaction　of　the　electrolyte　with　the　lithium　metal　underneath.　Additionally,　they　can　slowly　dissolve　into　the　electrolyte　and　redeposit　onto　uncovered　areas　of　the　lithium　metal　during　the　in-situ　SEI　formation　process.　When　the　in-situ　formed　SEI　ruptures　during　the　cycling　process,　the　lithium　metal　are　exposed　to　the　electrolyte,　providing　LiF　species　for　SEI　healing　at　the　crack　region.　The　symmetrical　cell　with　the　designed　LiF-rich　electrode　exhibits　stable　polarization　voltage　over　1000　h　of　cycle　time　(1　mA　cm−2/1　mAh　cm−2).　Stable　charging　and　discharging　cycles　over　550　times　are　also　achieved　for　full　cells　consisting　of　the　prepared　anode　and　LiFePO4　cathode　at　1C.　©　2024　Elsevier　Ltd