Thursday, January 24, 2013

Platinum Electrode Electrolyte

Introduction to platinum electrode and electrolyte:

The electrodes are used for electrochemical analysis in the laboratories and for the manufacturing purposes of the different substances or for purification of substances. There are various types of the platinum electrodes, which are used for  different purposes. Let us discuss the various types of the platinum electrodes used for the different purposes.

Platinum Electrodes and Electrolytes

In general the platinum electrodes are made of 10% iridium alloy so that the strength of the electrode increase and we can use the platinum electrode for long time. Platinum electrode which are in cylinder form are made by a gauge having the wire diameter of about 0.15 mm × 360 mesh per squared centimeter. In this case, the electrode has  greater surface area of the plain or may be the perforated platinum sheet. Due to more surface area the contact of the electrolyte with the electrode is more so that the ions move freely. It will take very less time in completing the reaction due to more area. Almost all of the electro chemical analysis is done by using the wire gauge platinum electrode. The other type of platinum electrodes are enclosed in a hard glass tubes and having a brass connection outside the tube. The glass protects the delicate platinum electrode. In the Hoffman electrolysis apparatus we use platinum electrodes which are enclosed in glass tube and in the form of pairs.

Conclusion for the Platinum Electrode and Electrolyte

Generally the wire gauge electrodes are more delicate as compared to the other ones. So, avoid shaking the electrode vigorously, as after electrolysis, the deposition of substances should be removed by dissolving in the acids to prevent the electrode for any damage. The platinum electrodes should be cleaned with distilled water and then dry up to 100°C before reuse the electrodes. As we use Zinc, tin, lead, cadmium and mercury for the electrochemical reaction, first deposit some of the copper or silver on the platinum electrodes to prevent it from alloying with the platinum.

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