Method for in-situ generation of lithium metal battery solid electrolyte interfacial film by using two-dimensional titanium carbide and silk fibroin peptide modified layer

The invention discloses a method for in-situ generation of a lithium metal battery solid electrolyte interface film by using two-dimensional titanium carbide and a silk fibroin peptide modified layer, and aims to solve the problems of poor interface contact between a polymer electrolyte and lithium metal, easy generation of side reaction and the like. The preparation method comprises the following specific steps: mixing acetylene black, two-dimensional titanium carbide and silk fibroin peptide according to a mass ratio of 1: 1: 1, adding electrolyte slurry in a solid mass ratio of 5: 2, uniformly stirring, preparing a modified layer with the thickness of 4 microns by using a blade coating method, and drying at 100 DEG C to obtain an electrolyte film with an interface modified layer. According to the invention, a solid electrolyte interface film rich in lithium fluoride and lithium nitride is generated in situ by utilizing the fluorine terminal of two-dimensional titanium carbide and amino nitrogen in silk fib