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. The result is that some of the heat given off by the planet accumulates, making the surface and the lower atmosphere warmer. External sites are not endorsed by the Australian Academy of Science.