The anode is the source of electrons to provide electrical energy. A source of electric current. Batteries consist of two electrodes immersed in an electrolyte. The electrolyte reacts chemically with the electrodes generating an electric current. The positive electrode in an electrochemical cell.
Electrons flow back into a fuel cell through the cathode.
An electrical conductor. Electrochemical reactions occur on the surface of an electrode. A negatively charged particle that is a constituent of an atom. Electrons can move from atom to atom. When they do, they produce an electric current.