you can use Swagelok cell or Coin cell to make two electrode system and then apply working as one electrode and one more electrode (by combining reference and counter ) for supercapacitor applications using electrochemical workstation.
As mentioned by Kiran Donthula, you need to connect the working electrode lead from your electrochemical workstation to the positive electrode of your two-electrode cell and connect reference and counter leads together with the negative electrode of your cell.