Why is platinum used in electrochemical cells?

1 Answer
May 8, 2018

Because it is inert when acting as an electrode (unreactive).


Platinum belongs to a group of metals in the periodic table called "noble metals"- which includes, among others: Gold, Silver, Iridium, and Platinum.

Platinum is used in electrochemical cells because it is resistant to oxidation- it will not easily react, which makes in excellent as an electrode as it will not take part in the Redox reactions occurring in electrochemical cells.