A typical battery needs 3 parts to create electricity:
• Anode - negative side of the battery
• Cathode - positive side of the battery
• Electrolyte - a chemical paste that separates the anode and cathode and transforms chemical energy into electrical energy
60% of the battery is made up of a combination of materials like zinc (anode), manganese (cathode) and potassium.
Inside a battery, an electrode is a substance that is in use for the conduction of electricity. The electric current comes or leaves the non-metallic medium like an electrolytic cell. In simple language, an electrode is a conductor that helps in establishing electrical contact with a non-metallic part of the circuit. Electrodes consist of two main things that are cathode and anode which basically describe the direction of flow of current. During discharge the positive is a cathode, the negative is an anode. During charge the positive is an anode, the negative is a cathode.
In a Li-ion battery the lithium ions move from the negative electrode through an electrolyte to the positive electrode during discharge and back when charging. Li-ion batteries use an intercalated lithium compound as the material at the positive electrode and typically graphite at the negative electrode.