Ti3C2 Anode for lithium metal battery comprising Ti3C2 thin film preparation method thereof and lithium metal battery comprising the same

摘要

Provided by the present invention is an electrolyte system for maintaining energy density of a lithium metal negative electrode-based secondary battery and extending a battery life. The ultimate application goal of the technology of the present invention is to use lithium metal with various anodes such as transition metal oxide, sulfur and air electrode used in a lithium metal secondary battery having high energy density as well as an existing lithium ion battery used in a future unmanned electric vehicle and a power grid energy storage system. The present invention also contributes to the development of unmanned device fields such as a drone which emerges recently. The present invention is expected to secure the global competitiveness of related secondary battery and electrochemical capacitor industries. Especially, when dealing with materials with high density energy, a recent research on safety has attracted attention as one of core researches since safety is lowered due to high energy density in product commercialization. In particular, securing the battery safety of high energy density is inevitable due to social and technological drawbacks caused by recent smartphone ignition. In particular, upcoming next-generation batteries have to be researched and confirmed on the safety of a battery and a battery handling system since the energy density of an existing lithium ion battery is substantially at least 2 to 8 times higher. Thus, the present invention provides technology of forming a Ti_3C_2 thin film as a stable SEI film capable of inhabiting the formation and diffusion of lithium dendrites in order to stabilize the lithium metal negative terminal of a lithium metal secondary battery with high possibility of battery ignition and prevent an internal short circuit. The present invention includes a lithium metal electrode and a Ti_3C_2 thin film.