Interlayer for protecting anode of rechargeable battery preparation method thereof and lithium metal battery comprising the same

摘要

It is an object of the present invention to provide an electrolyte system for maintaining energy density and extending battery life of a lithium metal negative electrode based secondary battery. The ultimate application goal of this technology is a variety of anodes, such as transition metal oxides, sulfur, and cathodes used in lithium-ion secondary batteries with high energy density, as well as existing lithium-ion batteries used in future unmanned electric vehicles and grid energy storage systems. Together with lithium metal. It will also contribute to the development of drones such as drones, which are emerging recently. The present invention is expected to secure the global competitiveness of the related secondary battery and electrochemical capacitor industry. Especially when dealing with materials with high density energy, the recent research on safety has attracted attention as one of the core research. The reason for this is that safety is lowered due to high energy density in product commercialization. In particular, it is inevitable to secure high energy density battery safety due to the social and technological winds caused by smartphone ignition. In particular, the upcoming next-generation batteries have to be researched and confirmed on the safety of the battery and the battery handling system since the energy density of the existing lithium-ion battery is substantially at least 2 to 8 times higher. Accordingly, the present invention forms a three-dimensional metal current collector with a pore structure pattern on the anode material thin film, and inhibits the production of dendrites through rapid diffusion and stable electrodeposition of lithium ions using the lithium metal electrode and By preventing side reactions between the electrolyte solutions, it can be applied as a negative electrode for a lithium metal secondary battery having stable and high coulombic efficiency.