Cl2 Gas Sensor Using Na+ Conducting Solid Electrolyte

A composite Na+ conductor of polycrystalline NASICON mixed with a glassy Na2O-A1(2)O(3)-4SiO(2) (40wt%) was used in Cl(2) gas sensor. The probe using the composite electrolyte and a RuO,+NaC1 (1:1) measuring electrode gave rapid EMF changes even for sub-ppm level of Cl(2) gas concentration (below 6 ppm).