Study on the structural phase transitions in NaSICON-type compounds using Ag3Sc2(PO4)3 as a model system

ABSTRACT: The superionic conducting Na Super-Ionic CONducting-type (NaSICON-type) material Ag3Sc2(PO4)3 was studied by single-crystal X-ray diffraction between 100 and 520 K. Two phase transitions were found, at 177 and 291 K. Full structural characterization of the three polymorphs is given for the first time. NaSICON (Na Super-Ionic CONducting) structured materials are among the most promising solid electrolytes for Li-ion batteries and ‘beyond Li-ion’ batteries (e.g. Na and K) due to their superior ionic conductivities. Although this material has been well known for decades, its exact phase behaviour is still poorly understood. Herein, a starting material of Na3Sc2(PO4)3 single crystals is used, grown by flux methodology, where Na is subsequently chemically replaced by Ag, in order to take advant

SUBMITTER: Redhammer G 

PROVIDER: S-EPMC7941282 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature