Lithium batteries provide the highest energy density which makes them ideal candidates for future generations of portable electronics and electric vehicles. The increasing demand for lithium batteries will be limited by the fact that lithium is not an abundant material and its cost is expected to increase considerably in the coming years. In contrast, sodium resources are unlimited, and from economic point of view sodium batteries appear as good alternative to lithium devices. Our studies are focused on the development of new Na+ ion-conducting chalcohalide glasses combining sodium halides and sulphide-based glass network. In order to understand the relationship between the glass local and intermediate-range structure and the ionic transport, we are going to combine diffraction and spectroscopy measurements of sodium chalcohalide glasses with conductivity and diffusion studies.