A PEM is a thin, plastic-like film that facilitates the transport of hydrogen ions from anode to cathode. Several automobile manufacturers have built prototype fuel cell cars that depend on PEM technology. Also known as Polymer Electrolyte Membrane.
Also called polymer electrolyte membrane fuel cell. A type of fuel cell in which the exchange of protons (H+) from the anode to the cathode via a membrane is involved in the chemical reaction producing electricity. The electrolyte is a called proton exchange membrane ( PEM). The fuel cells typically run at low temperatures (100ºC) and pressures ( 5 atm). Click here to see how it works.
A type of acid-based fuel cell in which the exchange of protons (H+) from the anode to the cathode is achieved by a solid, water-swollen membrane electrolyte impregnated with a strong acid. The fuel cells typically run at low temperatures (100OC) and pressures (5 atm). Anode Reaction: H2 Æ 2H+ + 2e- Cathode Reaction: _O2 + 2H+ + 2e- Æ H2O Overall Reaction: H2 + _O2 Æ H2O search
A type of fuel cell (PEMFC) where the electrolyte is a solid acid membrane. Operating temperature is low, at around 100°C. Typically, precious metal electrodes would be used. (Analogous to polymer electrolyte membrane fuel cells.)
Proton exchange membrane fuel cells, also known as polymer electrolyte membrane fuel cells (PEMFC), are a type of fuel cell being developed for transport applications as well as for stationary and portable applications. Their distinguishing features include lower temperature/pressure ranges and a special polymer electrolyte membrane.