The clean biogas is then stored at pressure for use in the fuel cell.
The oxygen needed by a fuel cell is usually simply obtained from air.
The U.S. Government owns and operates 30 fuel cell cogeneration units, the world's largest fleet of fuel cells.
All vehicles replaced by hydrogen fuel cell vehicles with zero CO 2 emissions, powered by renewable, short-rotation coppice produced fuel.
Low temperature cells The proton exchange membrane (a.k.a. polymer electrolyte membrane) fuel cell uses a polymeric electrolyte membrane) fuel cell uses a polymeric electrolyte.