Why is a finely divided particle layer of Pt | vedclass

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Question

(D) In a fuel cell,the electrochemical reactions (oxidation of fuel and reduction of oxidant) occur at the electrode-electrolyte interface. Finely div

Vedclass · Accepted Answer

Both $A$ and $B$.

Vedclass · Answer

(D) In a fuel cell,the electrochemical reactions (oxidation of fuel and reduction of oxidant) occur at the electrode-electrolyte interface. Finely divided $Pt$ (platinum) and $Pd$ (palladium) are used as electrode materials because they act as efficient catalysts for these reactions. The finely divided state increases the effective surface area of the electrodes,which significantly enhances the rate of the electrochemical reactions. Therefore,both the catalytic property and the increased surface area are essential for the efficient functioning of the fuel cell. Thus,the correct option is $D$.

Why is a finely divided particle layer of $Pt$ and $Pd$ provided on the electrodes of a fuel cell?

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