We provide an alternative method which requires no image analysis methods and which has a very high spatial resolution and element specific sensitivity. The method of choice is small angle scattering, which we have employed on a set of industry grade SOFC assemblies which were taken from stacks that had been run with sulfur ruch and sulfur depleted fuel, compared against the pristine electrodes. We present a detailed qualitative and quantitative assessment which is based on the chemical contrast variation and enhancement by using synchrotron radiation with tunable X-ray energy (anomalous small angle X-ray scattering).
With the data which obtained we are able to sketch a sulfur poisoning degradation model for the electrochemical interface (triple phase boundary) of the SOFC.
 A. J. Allen, J. Ilavsky, P. R. Jemian, A. Braun, Evolution of electrochemical interfaces in solid oxide fuel cells (SOFC): a Ni and Zr resonant anomalous ultra-small-angle X-ray scattering study with elemental and spatial resolution across the cell assembly, RSC Adv., 2014, 4, 4676-4690.