Lithium Penetration through Solid Electrolyte Porosity and The Effect of a Ag-C Buffer Layer

Growth of lithium through connected porosity is one of the ways that Lithium filaments can penetrate through the solid electrolyte. By performing experiments on electrolyte pellets with controlled porosity we show that the relation between time to short-circuit and porosity is highly non-linear.<br/>I will also discuss the mechanism by which buffer layers, and in particularly a Ag-C buffer layer can lead to highly efficient and uniform Li plating. By combining continuum + ab-initio modeling we can understand how Ag nanoparticles regulate the Li nucleation and growth. The understanding from this work also enables a rational selection of which other metals may or may not work.