Sensor element with catalytically active layer and method for the production thereof

摘要

The invention describes a sensor element for determining the concentration of gas components in gas mixtures, in particular in exhaust gases of combustion engines. It includes at least one measured gas space (13) and at least one gas inlet opening (17) through which the gas mixture is conveyable to the measured gas space (13), and at least one diffusion barrier (12) arranged between the gas inlet opening (17) and measured gas space (13). The diffusion barrier (12) includes at least one layer (14, 14a, 14b) of catalytically active material for establishing equilibrium in the gas mixture.