Development of a Rare-Metal-Free Cathode for Next-Generation Lithium Ion Batteries

抄録

Conversion-type active materials show promise for use in large-scale lithium-ion batteries by virtue of their low cost and large specific capacities. However, there are some challenges in the application of these materials to practical Li-ion batteries. To adapt the conversion-type active materials to the next-generation Li-ion batteries, it is necessary that we understand the conversion reaction in detail. In this review, the electrochemical properties of the iron-based conversion cathode are introduced, and their reaction mechanisms are described based mainly on our own experiments. Finally, we introduce a composite of LiF as an Li source and FeO as an anion accepter as a novel cathode system for the next-generation Li-ion batteries.