Abstract:With the popularization of intelligent terminals and the coming of “5G era”, the quantity of used LiCoO2 batteries has been increasing year by year. Due to its rich Co content, used LiCoO2 battery is an important source to ease the tight supply of Co in China. Thus, its recycle is of great practical significance. In this paper, the status quo of study on the recycle of used LiCoO2 batteries is introduced, and the recycling methods are analyzed from the respects of advantages and disadvantages. These methods mainly include pyrogenic process, wet process, material regeneration, etc. Moreover, the research and development trends of recycling used LiCoO2 batteries are discussed.