Graphite rods are used as electrodes in electrolysis because graphite's structure enables it to be an excellent conductor. The high number of delocalized electrons allows electricity to pass through graphite rapidly.

What are graphite electrodes used in?

MANILA (Reuters) - Graphite electrodes are the main heating element used in an electric arc furnace, a steelmaking process where scrap from old cars or appliances is melted to produce new steel.

Why is graphite used in electrolysis?

Graphite is insoluble in water. It has a high melting point and is a good conductor of electricity, which makes it a suitable material for the electrodes needed in electrolysis . ... These delocalised electrons can all move along together – making graphite a good electrical conductor.