An electrode material including at least one of sulfur and a compound that contains a sulfur atom, a conductive material, and a solid electrolyte that contains a lithium atom, a phosphorous atom and a sulfur atom, wherein the solid electrolyte has at least one of a peak at 86.1 ± 0.6 ppm and a peak at 83.0 ± 1.0 ppm in the solid 31 PNMR spectrum, and the ratio of the phosphorous atoms contained in the peak is 62 mol% or more relative to the phosphorous atoms contained in the all peaks.
