Why the Nyquist plot getting reverse and straight line for LSCF cathodes?

Dear Experts, I have recorded a typical nyquist plot for ( La0.6Sr0.4Co0.2Fe0.8O3) LSCF - Doped ceria nanocomposite which is a mixed ionic Electronic conductor. The sample has taken in the form...

14 November 2017 4,309 2 View