Quick Answer: Which Fuel Cell Has Highest Efficiency?

Is hydrogen fuel cheaper than gasoline?


While hydrogen is a cheaper fuel than gasoline on paper, the reality is, as of 2010, it is much more expensive.

The few models of hydrogen-fueled cars that are commercially available generally cost more than $100,000.

Researchers are still tweaking the technology to produce and transport hydrogen fuel..

How much hydrogen is needed for a fuel cell?

In electrical terms, the energy density of hydrogen is equal to 33.6 kWh of usable energy per kg, versus diesel which only holds about 12–14 kWh per kg. What this really means is that 1 kg of hydrogen, used in a fuel cell to power an electric motor, contains approximately the same energy as a gallon of diesel.

What is the efficiency of a fuel cell?

A conventional combustion-based power plant typically generates electricity at efficiencies of 33 to 35%, while fuel cell systems can generate electricity at ef- ficiencies up to 60% (and even higher with cogeneration).

Which fuel cell has the highest operating temperature?

High-temperature fuel cells: Molten carbonate fuel cells (MCFCs), with a molten carbonate eutectic as electrolyte, working between 600°C and 650°C. SOFCs, with an oxide conducting membrane.

How efficient are hydrogen fuel cells?

Hydrogen fuel cell vehicles, which use electric motors, are much more energy efficient and use 40-60 percent of the fuel’s energy — corresponding to more than a 50% reduction in fuel consumption, compared to a conventional vehicle with a gasoline internal combustion engine.

What are the five types of fuel cells?

At present, five fuel-cell types are potentially appropriate for fuel-cell rail, including (1) solid oxide (SOFC), (2) molten carbonate (MCFC), (3) phosphoric acid (PAFC), (4) proton exchange membrane (PEMFC), and (5) alkaline (AFC).