Electrochemical gaseous chlorine sensor and method for making the same

Abstract

The present invention relates to an electrochemical gaseous chlorine sensor. The sensor is characterized by covering one of the electrodes with a polymer material having a sensing activity and conductivity. The sensor includes: an ionic permeable film for separating a measuring chamber and a reference chamber, the ionic permeable film being a solid polymer electrolyte; a first electrode and a second electrode formed on two opposite sides of the ionic permeable film, the first electrode and the second electrode being conductors with catalytic activities; and a conductive polymer film formed on the first electrode. A fixed voltage ranging from −0.3 to 1.3V, preferably 0 to 0.2V, between said first electrode and said second electrode is maintained with a device, when the sensor is in use.

Dependencies are inferred from the claim text.