An anode is a positively charged electrode that attracts and donates electrons to the cathode. The anode is the source of electrons in a galvanic cell, and as such it plays a vital role in electrochemical reactions. In most cases, the anode is made from metals such as copper or zinc that have a high affinity for electrons. When these metals are placed in contact with electrolytes, they tend to lose electrons to the electrolyte solution. As a result, the metal atoms become ions and go into solution.