Abstract
The Li 2SiS 3 composition was investigated as possible lithium-conducting solid electrolytes. Depending on cooling conditions from the melt, the composition Li 2SiS 3 formed three different phases: equilibrium, metastable crystalline, and glassy phases. The samples were prepared by using pyrolitic graphite-coated silica ampoules and analyzed by powder x-ray diffraction, differential scanning calorimetry, and AC impedance spectroscopy. The metastable crystalline Li 2SiS 3 is a new phase found in this study, and it has a stretched one-dimensional chain structure compared to the equilibrium Li 2SiS 3. The analysis of the structutures and conduction behaviors of the three phases suggests that the enhanced ionic conductivity of the glassy Li 2SiS 3 is dominated by the higher carrier mobility rather than by the higher carrier concentration.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
