Kmiec Steven, Martin Steve W
Department of Materials Science & Engineering, Iowa State University of Science & Technology, Ames, Iowa 50011, United States.
Inorg Chem. 2021 Sep 20;60(18):13968-13981. doi: 10.1021/acs.inorgchem.1c00912. Epub 2021 Aug 31.
Nitrogen doping has been shown to greatly improve the stability of solid electrolyte (SE) materials at the anode and cathode interfaces in all solid-state batteries (ASSBs) as widely demonstrated by the LiPON family of compositions. In an effort to expand the use of nitrogen in SEs, in this study, mixed oxy-sulfide nitride (MOSN) glasses were prepared by direct ammonolysis of the sodium oxy-sulfide phosphate NaPSO (NaPSO) glass series to understand the combined effects that oxygen and sulfur have on the incorporation of nitrogen. The short-range order (SRO) structures of the NaPSON (NaPSON) glasses were investigated with Raman and infrared (IR) spectroscopies to understand the effect that nitrogen has in the glass structure. The N content of the glasses was quantified by elemental analysis and confirmed through weight change measurements. By combining this information, it was further possible to determine the anion exchange ratio, , for the N substitution of O and S as a function of the base NaPSO glass chemistry, . The composition-dependent glass transition temperature, (), measured with differential scanning calorimetry (DSC), was found to correlate well with the measured N/P ratio, , in the NaPSON glasses.
