Title: Electrochemical and Spectroscopic Properties of Dithiobiuret-based Cathode Materials for Lithium Ion Batteries Authors: T. Nishigaki, Y. Miki, H. Arayama, A. Saito, R. Miyasaka, S. Shigeto, H. Uemachi, A. Fujiwara Abstract: Lithium-ion battery (LIB) is a promising energy storage device due to its high capacity. Because the specific capacity of the cathodes in commercial LIBs is much less than that of the anodes, the development of cathode materials is a crucial issue. In this context, sulfur-containing materials can be considered as cathode materials with higher capacity, due to the small atomic weight of sulfur. In fact, organosulfur polymers, such as dithiobiuret (DTB) based materials show high capacity through the formation and scission of disulfide (S-S) bonds. Despite the high potential of DTB-based materials, there is no systematic study of these materials. In this study, we have investigated the electrochemical and spectroscopic studies on two kinds of DTB-based monomer cathode materials for lithium-ion batteries, DTB and diphenyl dithiobiuret (diph-DTB).