Abstract: The present invention provides a method and system of using carbon nanotubes (CNTs) to coat neural electrodes of different geometries and materials. Additional elements such as gold platinum, polypyrrole, polyethylenedioxythiophene or other conductive polymers and covalent linkage through an amide bond are formed with the CNTs for attachment to the neural electrodes. Such CNT-coated electrodes have properties that improve the recording or stimulation characteristics of the electrodes, thus aiding the study of neural functions or the treatment of neural diseases.