I was using silver or gold electrodes on CVD graphene. Did not have any issues with the quality and stability of the electrical contacts. Aluminum will be oxidized in the air that may affect the stability of graphene/Al electrical contacts. If you need to use aluminum electrodes, I would recommend to carry out all measurements in a dry nitrogen glovebox.

Shinho Kim

Every galvanic cell is a cathode, an anode, lowered into an electrolyte solution. Aluminum on graphene is a cathode and anode, not just one electrode. Aluminum is not used as an electrode, as It chemically interacts with water, acids, alkalis.

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