This research was about SnO2/C electrode preparation to detect methanol using the electrochemical sensor method. In this research the process of making SnO2/C electrode ink was prepared by spraying method. SnO2 electrodes, vulcan carbon, polyaniline, and isopropanol mixed and sprayed onto the surface of the aluminium plate. The performance of the SnO2/C electrode was tested by using cyclic volt…