Anode

The electrode where electrons are lost (oxidized) in redox reactions.

Electrolyte cell showing electron flow and copper ion into and out of solution.

The electrode of an electrolyte cell at which oxidation occurs, electrons flow away from the anode in the external circuit, it is usually at the electrode that corrosion occurs and metal ions enter solution.

During discharge, the negative electrode of the cell is the anode.

During charge, the situation reverses and the positive electrode of the cell is the anode.

Cathodic Protection System

The anode is the earth or ground in a cathodic protection system.

Diode

The positive terminal of a diode.

Graphite Anode

A commercial 2600 mAh 18650 Li-ion cell today uses around 10g of graphite anode material.

Silicon Anode

A commercial 2600 mAh 18650 Li-ion cell today uses around 10g of graphite anode material - just 2.6g of structured silicon can replace graphite.

See also: Anode Corrosion, Anodic Reaction, Cathode, Electrochemistry, Electrodes, Electrolysis, Sacrificial Anode.

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Subjects: Electrochemistry Physics