This technology forms a thin, ion-conductive polymer protective layer (artificial SEI) on a lithium anode by directly applying a liquid cross-linkable monomer to the surface and inducing polymerization through light or heat.
When lithium metal is used as an anode, volume changes during charging and discharging cause the solid electrolyte interphase (SEI) to collapse. This leads to continuous electrolyte decomposition and the growth of dendrites, which reduces battery stability and lifespan.
This technology involves applying a liquid cross-linkable monomer, such as fluorine-containing PEGDA, to the lithium surface and polymerizing it using heat (60–200°C) or 365 nm light. This process simultaneously creates a LiF layer through reaction with the lithium and forms a polymer film. Applicable to anode protection processes for high-energy lithium metal batteries and lightweight, high-capacity cells for drones and UAMs, it suppresses internal resistance increases and delays dendrite formation through simple application and curing, without the need for specialized coating equipment.
N/A
