What is the source of energy in a fuel cell?

A fuel cell uses the chemical energy of hydrogen or other fuels to cleanly and efficiently produce electricity. If hydrogen is the fuel, the only products are electricity, water, and heat.

How is energy released in a fuel cell?

Electrical energy is released from hydrogen fuel cells. … The electricity in a fuel cell is created by applying hydrogen to the anode and oxygen to the cathode. A catalyst splits the hydrogen into positive ions and negatively charged electrons, the latter of which travel along a circuit to the cathode.

Why are fuel cells not a source of energy?

The production of hydrogen fuel cell requires fossil fuels. as hydrogen and oxygen need to be seperated . If we use all this for hydrogen fuel then no fossil fuels will be available for other use. … The cells in which hydrogen energy is kept does not store much.

How long do fuel cells last?

The fuel cell stacks are designed to last the lifetime of the vehicle, about 150,000–200,000 miles. At the end of its lifespan, the fuel cell will be disassembled and the materials recycled, similar to what happens with vehicle components today.

Which fuel is the most efficient?

Diesel engines generally achieve greater fuel efficiency than petrol (gasoline) engines. Passenger car diesel engines have energy efficiency of up to 41% but more typically 30%, and petrol engines of up to 37.3%, but more typically 20%.

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Is hydrogen fuel liquid or gas?

Hydrogen is a gas at normal temperature and pressure, but hydrogen condenses to a liquid at minus 423 degrees Fahrenheit (minus 253 degrees Celsius).

Why are hydrogen engines a bad idea?

Hydrogen fuel cells have bad theoretical and practical efficiency. Hydrogen storage is inefficient, energetically, volumetrically and with respect to weight. … It has a horrible well-to-wheel efficiency as a result. Easy ways to get large quantities of hydrogen are not ‘cleaner’ than gasoline.

Why are hydrogen cars better than electric?

The main advantage of hydrogen cars is that they produce no emissions at the tailpipe – just water. This benefit is the same as with a normal electric car, and puts both at the forefront of emission-cutting tech in the automotive world.