Anode

The Anode is the negative or reducing electrode that releases electrons to the external circuit and oxidizes during and electrochemical reaction. In a lithium ion cell the anode is commonly graphite or graphite and silicon.

Anode Components

The anode is not just graphite or graphite and silicon. It needs additives to increase the conductivity and a binder to hold it all together.

  1. Active material
    • graphite
      • natural
      • synthetic
    • graphite and silicon
    • silicon
  2. Conductive additive
    • Carbon Black
  3. Binder
    • Carboxymethyl Cellulose (CMC)
    • Styrene Butadiene Rubber (SBR)
Ande and cathode deifinition in chemistry

Anode-Cathode

Anode and Cathode are not fixed and change positions depending on whether the cell is being charged or discharged. It is therefore incorrect to state that the electrons move from Cathode to Anode during the recharging process. The – and + electrodes (terminals) however stay put. For example, in a typical Lithium ion cobalt oxide battery, graphite is the – electrode and LCO is the + electrode at all times.