A lithium-ion battery cathode material includes a composite of sulfur and porous carbon, and glass particles and/or glass ceramic particles that satisfy a composition represented by the following formula (1), LiMPS (1) wherein M is B, Zn, Si, Cu, Ga, or Ge, and a to d are the compositional ratio of each element, and satisfy a:b:c:d=1 to 12:0 to 0.2:1:2 to 9.
