Why Graphite Electrodes Are Used for Electrolysis

What is Graphite Electrode?

Graphite electrode is mainly made of petroleum coke and needle coke as raw materials and coal pitch as binding agent, which is made by calcination, batching, mixing and kneading, pressing, roasting, graphitizing and machining, and is a conductor that heats and melts the furnace charge by releasing electric energy in the form of electric arc in electric arc furnace, and can be divided into ordinary power graphite electrode,high power graphite electrode and ultra-high power graphite electrode according to its high or low quality index.

Why Are Graphite Electrodes Used in Electrolysis?

The main reason for the use of graphite electrodes in electrolysis is that graphite is an excellent conductor. The structure of graphite is such that it has a large number of electrons floating freely between the different atomic layers (graphite bonds are formed by only three of the four electron shell layers of carbon atoms, with the fourth electron being free to move). These electrons act as strong conductors and allow the electrolysis process to proceed smoothly. In addition, graphite is economical, stable at high temperatures and wear-resistant. For all these reasons, graphite electrodes are often used in electrolysis.

Why is Graphite Used As an Electrode in Electrolysis?

The atomic structure of graphite results in a large number of unbonded electrons, allowing them to migrate between the graphite layers. It is this large number of free electrons (electron leaving domains) that gives graphite its excellent electrical conductivity. Not only is graphite a good conductor, but it is also inexpensive, robust and easily accessible - all further reasons why it is commonly used as an electrode.

Why Are Graphite Rods Used As Electrodes in Electrolysis?

Graphite rods are used as electrodes in electrolysis because the structure of graphite makes it an excellent conductor. The large number of out-of-domain electrons allows a fast flow of current through the graphite. Graphite can also be formed directly into rods, which is a cost effective and wear resistant material.

What Happens to the Solution During Electrolysis when Using Graphite Electrodes?

Graphite allows positively charged ions (metals and hydrogen) to gain electrons from the negatively charged electrode. Conversely, the negatively charged ions lose electrons (oxidation).

Are you interested in learning more about  graphite electrodes for sale and how they can benefit you? Contact us today to secure an expert consultation!