Membrane electrode assembly,a structured component in a PEMFC and DMFC,consisting of a membrane with an electrode on each side.

This separates two electrodes of a fuel cell,acting as the electrolyte and allowing passage of ions between the electrodes.

Methanol is a fuel used in DMFCs.

Micro-combined heat and power fuel cells refer to stationary units designed to provide electricity,hot water and sometimes space heating. These can either be for residential use or for small offices and commercial buildings.

Molten carbonate fuel cells have an electrolyte of molten carbonate salt and operate at temperatures in the region of 600C to 700C. Negatively charged carbonate ions carry the current through the membrane separating the electrodes, which have a standar electrical connection. MCFC systems are fuelled by hydrogen.