SULFUR-CONTAINING COMPOUND, SOLID ELECTROLYTE, AND BATTERY

Provided is a novel sulfur-containing compound containing a lithium (Li) element, a phosphorus (P) element, a sulfur (S) element, and a halogen (X) element, which can be suitably used as, for example, a solid electrolyte, and is able to suppress the generation of a hydrogen sulfide gas even when exposed to moisture in the atmosphere.The sulfur-containing compound contains a lithium (Li) element, a phosphorus (P) element, a sulfur (S) element, and a halogen (X) element, and has a peak at each position of 2θ = 21.3° ± 1.0°, 27.8° ± 1.0°, and 30.8° ± 0.5° in an X-ray diffraction pattern measured by an X-ray diffraction apparatus (XRD) using CuKα1 rays.