Layered oxide is a compound with a layered structure, whose crystal structure is composed of alternating cationic and anionic layers, which endows it with unique physical and chemical properties. In the field of batteries, layered oxides have attracted much attention due to their high energy density, good stability, and environmental friendliness.

As a cathode material for batteries, layered oxides can provide a higher voltage platform and specific capacity, thereby improving the energy density and performance of batteries. For example, in lithium-ion batteries, layered oxides have been widely used as cathode materials, providing important support for the development of electric vehicles, energy storage systems, and other fields.

In addition, with the deepening of research, layered oxides have shown good application prospects in new battery systems such as sodium ion batteries and potassium ion batteries. These new battery systems have advantages such as low cost and abundant resources, and the application of layered oxides is expected to promote the commercialization process of these technologies.