Hello, I am doing assembling of the LLZO/PEO-LiTFSI composite electrolyte. The LLZO is porous structure not a pellet. I am currently putting the LLZO on a stainless steel and infiltrating the PEO-LiTFSI on it with vacuum assisted, and assembling with another stainless steel to test its ionic conductivity. However, every time my data is not good. The impedance at higher frequency is fine, around 10 kohms. But the lower frequency it is tested, the impedance gets significantly higher, and when it is tested at 0.1 Hz, the impedance is around 100 Gohms. I know the impedance will get higher at lower frequency, but this data is ridiculously weird. And some points are even in the negative values of Z' axis.
So does anyone have experience doing this composite electrolyte? Do you have any tip to solve this problem and get good data? Thank you!
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