Elektroda Platina spiral, Platinum electrode, positive

It is a conductor that provides a surface for electron transfer during redox reactions without chemically participating in the reaction itself, serving as a non-reactive pathway for current. These electrodes are crucial when reactants or products are gases or ions, or when the electrode metal itself would interfere, allowing reactions like the electrolysis of salt water or the formation of standard hydrogen electrodes to occur. 

Pt itself is a noble metal that is very stable and resistant to corrosion. Because of its stability, like Au, it is often used to make jewelry. As an electrode, it is used to oxidize organics or to generate hydrogen or reduce oxygen.