Influence of Reduced Na Vacancy Concentrations in the Sodium Superionic Conductors Na_{11+ x}Sn₂P_{1- x}M_xS₁₂(M = Sn, Ge)

Exploration of sulfidic sodium solid electrolytes and their design contributes to advances in solid-state sodium batteries. Such a design is guided by a better understanding of fast sodium transport, for instance, in the herein studied Na11Sn2PS12-type materials. By using Rietveld refinements against synchrotron X-ray diffraction and...

Lithium and Sodium Insertion in Nanostructured Titanates: Experiments and simulations

Nanostructured materials are featured by providing a variety of favourable electrical properties, as the reduced ion and electron transport paths enable significant enhancement on (de)intercalation rates and hence high power. For TiO2 anatase, nano-sizing results in a curved open cell voltage profile with a much shorter plateau region in...