Abstract
A method is discussed, which allows the investigation of the oxygen transport across compressed ceramic sample. In this method, coulometric titration was used to monitor the oxide ion transport upon passage of current across the ceramic samples. The oxide ion transference number was determined from the ratio between oxide ion transport and the total current. The method feasibility was tested using cerium gadolinium oxide. Subsequently, lanthanum strontium manganites were used as model materials, and their transference number was related to the oxygen diffusion coefficient through the Nernst-Einstein relation. The diffusion coefficient found by coulometric titration was compared to values found by thermogravimetry on powdered and compressed samples.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
