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Hydrogen fuel cell buses have historically been significantly more expensive to purchase and operate than diesel, hybrid or electric buses. [60] [64] In recent years, costs have been reduced to levels comparable with diesel buses. [66] A variety of bus manufacturers are currently producing hydrogen fuel cell buses.
This year, one new hydrogen vehicle will hit the market: the Honda CR-V e:FCEV is an adaptation of the popular compact crossover, with not only a hydrogen fuel cell (jointly developed with GM) but ...
These hydrogen engines burn fuel in the same manner that gasoline engines do. The theoretical maximum power output from a hydrogen engine depends on the air/fuel ratio and fuel injection method used. The stoichiometric air/fuel ratio for hydrogen is 34:1. At this air/fuel ratio, hydrogen will displace 29% of the combustion chamber leaving only ...
The alkaline fuel cell (AFC) or hydrogen-oxygen fuel cell was designed and first demonstrated publicly by Francis Thomas Bacon in 1959. It was used as a primary source of electrical energy in the Apollo space program. [41] The cell consists of two porous carbon electrodes impregnated with a suitable catalyst such as Pt, Ag, CoO, etc.
In 2008, The Boeing Fuel Cell Demonstrator achieved straight-level flight on a crewed mission powered by a hydrogen fuel cell. 2008 - Aircraft, Boeing [80] 2015 - Drone, Intelligent Energy, UK tested successfully Drones with Hydrogen fuel cell engine. [81] 2016 - HY4 is the first passenger aircraft in Germany. [82]
2007 – Hydrogen 7 is powered by a dual-fuel internal combustion engine–liquid hydrogen 2007 – BMW H2R speed record car – ICE–liquid hydrogen CMB.TECH (Compagnie Maritime Belge)
The fuel cells made at this time were most similar to today's phosphoric acid fuel cells. [1] Most hydrogen fuel cells today are of the proton exchange membrane (PEM) type. A PEM converts the chemical energy released during the electrochemical reaction of hydrogen and oxygen into electrical energy.
However, there is significant debate as to whether hydrogen fuel cells will be a realistic technology for use in automobiles or other vehicles. (See hydrogen economy.) A large part of PEMFC production is for the Toyota Mirai. The US Department of Energy estimates a 2016 price at $53/kW if 500,000 units per year were made. [55]