▎ 摘　　要

NOVELTY - Implantable electrode comprises a multi-layer graphene-fiber core, a separating layer, and an electrically conductive layer provided at least in portion between the multi-layer graphene-fiber core and the separating layer. USE - Implantable electrode used in making biosensors and bio-electronics applications of microelectrode arrays including metalized graphene fibers. ADVANTAGE - The implantable electrode has low impedance, high surface area and excellent electrochemical properties and improves ability to record and detect neuronal activity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for making an implantable electrode, which involves: a. forming a multi-layered graphene-fiber core using ordered graphene oxide sheets; b. adding an electrically conductive layer to at least a portion of the multi-layered graphene-fiber core; and c. applying a separation layer to the multi-layered graphene-fiber core and electrically conductive layer.