Patent ID: 8580432

Claim:
A solid nanocomposite particle composition for lithium metal or lithium ion battery electrode applications, said composition comprising: (A) An electrode active material in a form of fine particles, rods, wires, fibers, or tubes with a dimension smaller than 1 μm; (B) Nano graphene platelets having a thickness less than 1 nm; and (C) A protective matrix material reinforced by said nano graphene platelets which are not formed in situ from said matrix material; wherein said nano graphene platelets and said electrode active material are prepared separately and are both dispersed in said protective matrix material, and said nano graphene platelets occupy a weight fraction w g of 1% to 90% of the total nanocomposite weight, said electrode active material occupies a weight fraction w a of 1% to 90% of the total nanocomposite weight, and said matrix material occupies a weight fraction w m of at least 2% of the total nanocomposite weight with w g +w a +w m =1 and wherein said matrix material is selected from a polymer, meso-phase carbon, coke, petroleum pitch, coal tar pitch, meso-phase pitch, metal oxide, metal hydride, metal nitride, metal carbide, metal sulfide, organic material, or a combination thereof.