SENSOR ELEMENT AND METHOD FOR DETERMINING GAS COMPONENTS IN GAS MIXTURES AND USE THEREOF

摘要

The invention relates to a sensor element of a gas sensor for determining gas components in gas mixtures. Said sensor element comprises at least one electrochemical measuring cell which is constituted by a ceramic substrate and electrodes mounted thereon. The sensor element comprises at least one interior space (14, 14a, 14b) which is closed off in a gas-tight manner, in which interior space at least one first inner electrode (12a, 15a, 12a1, 12a2, 15a1, 15a2) is positioned which forms respective electrochemical cells together with a second and a further electrode (12b, 12b1, 12b2, 15b, 151, 15b2) of the sensor element, one of the electrochemical cells being an electrochemical pump cell, and the second and/or the further electrode (12b, 12b1, 12b2, 15b, 15b1, 15b2) being exposed to the measuring gas.