US DOD developing Fuel Cells to power Military Vehicles, UAVs , Submarines, Military Bases to Soldier wearables

A fuel cell is a device that generates electricity by a chemical reaction. It converts hydrogen and oxygen into water, and in the process also creates electricity. Fuel cells provide many advantages, they are environment friendly as they don’t produce pollutants or greenhouse gasses, significantly improving our environment, high energy efficiency ( can be close to 80%  where they generate both heat and electricity), scalable providing power from milliwatts to megawatts, and complementary i.e.  readily be combined with other energy technologies, such as batteries, wind turbines, solar panels, and super-capacitors. There are many types of fuel cells, and each can operate in a clean manner using different fuels including hydrogen, natural gas, methanol, ethanol, biogas. In just the last two years, Toyota, Hyundai and Honda have released vehicles that run on fuel cells, and carmakers such as GM, BMW and VW are working on prototypes.