Lithium Iron Phosphate Nanosheet Nests Cathode Material for Lithium Ion Batteries

In this work, we report a new method for the synthesis and development of stacked nanomaterials for use as active materials in lithium ion batteries. The method has been demonstrated using LiFePO 4 as active material and graphene as conductive additive. The synthesis of stacked materials is achieved by a wet chemical procedure that for birdnest shaped LiFePO 4 particles followed by a sonication procedure to form stacked nanosheets. Atomic force microscopy and transmission electron microscopy images show very thin layers of material ranging from 10 to 50 nm in thickness. The work presents a viable method for scalable synthesis of composite 2-dimensional nanostructures that could be extended to other class of intercalation materials for Li-ion battery applications.