Fundamental scientific aspects of lithium batteries (VII)--Positive electrode materials

One of the key challenges for improving the performance of lithium ion batteries to meet increasing energy storage demand is the development of advanced cathode materials. Layered, spinel and olivine structured cathode materials are able to meet the requirements and have been widely used. In this paper, we summarize briefly the characteristics of cathode materials that have applied in commercial products, and discuss the state-of-the-art development of the materials.