What is the best way to calculate the grain boundary area for an electrolyte from the geometrical data (thikness, diameter) analytical data (xrd) or morphology? Please don't suggest theoretical methods but a real procedure.
In addition: is better to calculate the effective grain boundary conductivity or the specific grain boundary conductivity?
Thank you but i know very well what I can calculate from impedance data. This the basic of electrochemistry You didn't undestand the question. What is the best way to calculate the grain boundary area? The formula you wrote in addition is the effective grain boundary conductivity (I know) but you didn't say which grain boundary conductiviity is better to calculate.
As the attached picture, TEM is the best method. U can use XRD to get the size distribution and some other details by carefully do sample preparation, data acquisition and analysis. SEM maybe not in your case since the grain (bulk) or particle (powder) is poly-crystalline.
U can use ImageJ software to process the image and get the size distribution as well as by XRD.
Thank you Maykel Manawan but to calculate the grain boundary conductivity we need the grain boundary area (cm2, m2...) not the size distribution. Consider that we are discussing about a sintered material not powders so I think that TEM is not indicated. XRD is good and I found a way related to application of fourier Transform to calculate the grain boundary area but it's very complicate way.
I proposed this question becouse in literature you can find many papers about this topic but there are many mistakes about how the authors calculate the grain boundary or the bulk conductivity. Maybe they use always the same area and they find a very complacent reviewers.
"... to calculate the grain boundary conductivity we need the grain boundary area (cm2, m2...) not the size distribution", well u can get it by pi*D^2 (nm^2), as what with SLS or DLS where u get the distribution by number (frequency), by area and or by volume. If that what u mean...
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