Phase Relations in a NaFeO-SnO (0-50 mol.% SnO) System and the Crystal Structure and Conductivity of NaFeSnO.

With the view of developing new materials for sodium and sodium-ion power sources, NaFeO-SnO (0-50 mol.% SnO) powders were synthesized using a solid state method, and their phase composition and crystal structure were studied. A phase of the NaFeSnO composition with a layered rhombohedral structure of the α-NaFeO type was found when the tin dioxide content was 20 mol.