Patent ID: 9356281
Filing Date: 2016-05-31
CPC Classification: C01B,C30B,H01M,Y02E

Claim Text:
1. A method of making a negative electrode that intercalates and deintercalates lithium during charging and discharging, respectively, for a lithium-ion electrochemical cell, the method comprising: providing a metallic foil comprising an electrode surface region; forming a ductile metallic layer onto the electrode surface region; directly growing graphene planes onto the ductile metallic layer generally perpendicular to the electrode surface region and coextensive with the electrode surface region by chemical vapor deposition of a gas composition comprising carbon-precursor molecules, wherein an electrically insulating polymeric binder and conductive diluents are not included along with the graphene planes heating the ductile metallic layer to above 950° C. after the graphene planes have been formed on the ductile metallic layer to flow and wet the ductile metallic layer around edges of the graphene planes; cooling the ductile metallic layer to bond the edges of the graphene planes to the ductile metallic layer; and intercalating lithium into the graphene planes.