Extended Data Fig. 3: Electronic structure and conductivities of sulfur iodide materials.
From: Healable and conductive sulfur iodide for solid-state Li–S batteries
(a) Variable temperature X-band EPR spectra collected on S9.3I and elemental sulfur. The radical concentration in S9.3I grows with increasing temperature, but not in S. (b) Temperature evolution of the EPR signal intensity (top panel), linewidth (bottom panel), and g-factor (middle panel) of S9.3I. The g-factor for S9.3I is approximately 1.99 and does not change appreciably with increasing temperature (bottom panel), suggesting that similar radical species are produced over the entire temperature range. (c) EPR spectra collected at 100 K on S9.3I before and after melting. The electronic conductivity of S35.7I (d), S15.9I (e), and S6I (f) measured by using a potentiostatic test at room temperature.
