Essential Chemistry for IGCSE - Chemical Changes (Section 1 - No. 36)
What is the role of the platinum electrode in a hydrogen fuel cell?
To provide electrons for the reaction.
To act as the electrolyte.
To catalyze the oxidation of hydrogen and reduction of oxygen.
To store the hydrogen gas.
توضیح
Platinum is a catalyst that speeds up the electrochemical reactions in the fuel cell.