The present invention provides an organic sulfur material comprising carbon, hydrogen, and sulfur as constituent elements, and having peaks in the vicinity of 480 cm−1, 1250 cm−1, 1440 cm−1, and 1900 cm−1 in a Raman spectrum detected by Raman spectroscopy. The peak in the vicinity of 1440 cm−1 is the most intense peak. This organic sulfur material, which is produced by using a liquid organic starting material, achieves high capacity. This organic sulfur material preferably does not have peaks in the vicinity of 846 cm−1 or 1066 cm−1.