Abstract: A new oriented electrodeposition method was used to obtain regular microstructure on platinum electrode surface. The treatment effects of electrodeposition with different experimental conditions were evaluated by electrochemical performance tests. Mechanical and electrochemical stability of electrodeposited electrode were respectively verified by ultrasonic treatment and electric pulse stimulation. The results showed that the microstructure obtained on electrode surface could increase the area for charge absorption. Addition of crystal modifier NH4Cl resulted in more regular microstructure on electrode surface. Compared with the irregular electrodeposition, double-layer capacitance and cathodic charge storage capacity of neural electrode were improved respectively by 26.8%, 85.7%. When the concentration of crystal modifier was 4 mol/L, the electrolyte temperature was 50 ℃, the best optimization effect could be achieved.

Key words: neural electrode; electrodeposition; microstructure; crystal modifier; charge storage capacity