GRAPHENE-ENCAPSULATED GRAPHITE-SUPPORTED ANODE ACTIVE MATERIAL FOR LITHIUM-ION BATTERIES

摘要

Provided is graphene-embraced anode particulate for a lithium battery, the particulate comprising: (A) a core comprising one or a plurality of anode active material-decorated carbon or graphite particles, wherein the carbon or graphite particles have a diameter or thickness from 500 nm to 50 μm and the anode active material, in a form of particles or coating having a diameter or thickness from 0.5 nm to 2 μm, is bonded to or embedded into surfaces of the carbon or graphite particles; and (B) an embracing shell embracing or encapsulating the core, wherein the embracing shell comprises multiple graphene sheets and have a thickness from 0.34 nm to 5 μm.