This high end, high current potentiostat/galvanostat, with a compliance voltage of 30 V and a bandwidth of 1 MHz is specially designed for electrochemical impedance spectroscopy, with a maximum current of 2 A, the current resolution is 30 fA at a current range of 10 nA.

https://www.metrohm-autolab.com/Products/Echem/NSeriesFolder/PGSTAT302N