A simple method for estimating the Critical Current Density
Are you interested in measuring the Critical Current Density (CCD) of your solid electrolyte? In this application note we describe applying a simple method to determine the CCD of some LLZO samples with a CompreCell + CompreDrive setup. A higher content of amorphous phase was found to increase the CCD by inhibiting lithium dendrite formation as well as propagation.
The absolute CCD values will always depend on the exact method used, and there has recently been a lot of good discussion about how to obtain the most relevant numbers. Here we used a basic galvanostatic stripping/plating procedure. Feel free to read about it below, and use it as a jumping-off point for finding the best method for your specific samples and application!
If you’re interested in the samples we used, also do have a look at the publication which has more details on the synthesis and characterization.
To cite this application note, please use: “Karlsson et al, rhd instruments GmbH & Co. KG, Application Note: Lithium Metal Solid-State Pouch Cell: Pressure Dependence of Rate Performance, March 2024,
https://docs.rhd-instruments.de/appnotes/application-note_Pouch_Cell_CompreFrame.pdf”.