Characterization of batteries and fuel cells using electrochemical impedance spectroscopy

Alternative energy sources are becoming more prevalent as alternatives to fossil fuels become important in the electricity generation equation. Fuel cells and batteries both play their part in this arena for energy storage and conversion. Their success depends on continued improvement in performance. While there are many tools used in the characterization of these devices during all stages of developent, one stands common – electrochemical impedance spectroscopy. Electrochemical impedance spectroscopy (EIS) is a powerful technique that is particularly useful for battery and fuel cell development. What makes this technique so powerful is that it is a non-destructive technique that allows you to characterize everything from materials, to cells, to modules, and even full packs.