The activities of independent research of this project are focused on research in the field of superion drivers with argyrodite structure. These are material structures capable of functioning as solid electrolytes having potentially wide uses as solid electrolyte batteries, fuel cells, electrochemical sensors and other SSIs. Solid State IONICS) components. In addition, however, these materials have the possibility of being widely used in new generation supercapacitors. Compared to traditional capacitors, they are characterised by small size, high capacity and temperature stability and can be used to create autonomous nano- or micro-systems as well as powerful energy sources.