| Abstract Scope |
Glassy solid-state electrolytes present advantageous properties for usage in batteries through their processability, tunable chemistries, and resistance to dendrite formation. To process these glasses into thin films (<100 µm), a methodology was developed to characterize the key thermal properties of the glasses. Within the 0.58Li2S + 0.315SiS2 + X glass system, X was changed to synthesize a pure sulfide chemistry (S), substituting LiPS3, a mixed oxy-sulfide chemistry (MOS), substituting LiPO3, and a mixed oxy-sulfide-nitride chemistry (MOSN), substituting LiPO3 and LiPON. Glasses were synthesized through the melt quenching of mechanically mixed powders. The key thermal characteristics were determined through a series of differential scanning calorimetry (DSC) experiments. Isothermal holds above the glass transition were used with the Johnson-Mehl-Avrami-Kolmogorov (JMAK) model to quantify the crystallization behavior of the glasses. Cyclic scans over the glass transition were utilized to determine a fragility index used in the Mauro-Yue-Ellison-Gupta-Allan (MYEGA) model to estimate viscosity. |