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Broadband Dielectric Spectroscopy

We use BDS to measure the ionic conductivity of our solid polymer electrolyte samples. Conductivity quantifies how fast the ionic species are moving in the polymer host. An example of conductivity versus temperature data for a solid polymer electrolyte sample is given below. The sharp decrease in the conductivity at temperatures below 60C occurs because the polymer host (polyethylene oxide) crystallizes at this temperature.



Conductivity measurement using broadband dielectric spectroscopy

Penn State Chemical Engineering

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