Patent ID: 9281521
Filing Date: 2016-03-08
CPC Classification: C01B,H01M,Y02E

Claim Text:
1. A method for preparing a graphite negative material for an electrode of a lithium-ion battery, comprising: loading a catalyst on the surface of a graphite material comprising a plurality of graphite layers to form a graphite material loaded with the catalyst; forming a plurality of channels through the graphite layers of the graphite material loaded with the catalyst by reacting the graphite material loaded with the catalyst with a reaction gas, wherein the carbon carbons of the graphite material in contact with the catalyst are transformed to a gaseous product to be removed, the plurality of channels are capable of allowing lithium ions to pass therethrough freely, and a BET specific surface area of thus-obtained graphite negative material is in the range of 2.2- to 10.7 m2/g; wherein the catalyst comprises at least one selected from a group consisting ofTi, Zr, V, Nb, Cr, Mo, W, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Gd, Na, K, Mg, Ca, Sr, Ba, Al, Ga, In, Sn, Sb, Bi and a compound thereof.