A chlorine gas sensor based on the combination of Mg2+ cation conducting and O2- anion conducting solid electrolytes with lanthanum oxychloride as anauxiliary electrode

A chlorine gas sensor was fabricated with the combination of divalent Mg2ion conducting Mg(1-2)x(Zr1-xNbx)(4)P6O24 (x = 0.15) solid solution and div alent oxide anion conducting stabilized zirconia with calcium-doped lanthan um oxychloride as an auxiliary electrode. The response time necessary for t he attainment of 90% response was within several min and a rapid and reprod ucible response was continuously achieved. The relation between the sensor output and the logarithm of chlorine gas concentration was exactly 1-1 and obeys the Nernst theoretical relation. (C) 2001 Elsevier Science B.V. All r ights reserved.