New chlorine gas sensor fabricated from chlorine anion- and scandium(III) cation-conducting solid electrolytes

A chlorine gas sensor was fabricated from monovalent Cl- anion- and trivalent Sc3+ cation-conducting solid electrolytes. The sensor exhibited reproducible response, and time to reach 90% response was less than 3 min. Good linearity was observed between the sensor EMF output and the logarithm of the chlorine gas concentration, and the results obey ideal Nernst equation. (C) 2003 Elsevier Science B.V. All rights reserved.