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Khushboo
Khushboo

Khushboo

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Khushboo
Asked: October 28, 20212021-10-28T16:16:13+05:30 2021-10-28T16:16:13+05:30In: GENERAL

What is Hydrogen?

What is Hydrogen?

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      [Deleted User]
      2021-10-28T16:22:08+05:30Added an answer on October 28, 2021 at 4:22 pm

      Hydrogen Fuel Cell

      Context:

      NTPC Ltd has invited Global Expression of Interest to provide 10 Hydrogen Fuel Cell-based electric buses and cars.

      About:

      • A fuel cell is a device that converts chemical potential energy (energy stored in molecular bonds) into electrical energy.
      • A PEM (Proton Exchange Membrane) cell uses hydrogen gas (H2 ) and oxygen gas (O2 ) as fuel. The products of the reaction in the cell are water, electricity, and heat.

      Hydrogen + Oxygen -> Electricity + Water Vapour 

      • This is a big improvement over internal combustion engines, coal-burning power plants, and nuclear power plants, all of which produce harmful by-products.
      • Since O2 is readily available in the atmosphere, we only need to supply the fuel cell with H2 which can come from an electrolysis process

      What is Hydrogen?

      • Hydrogen is the simplest element. An atom of hydrogen consists of only one proton and one electron.
      • It’s also the most plentiful element in the universe. Despite its simplicity and abundance, hydrogen doesn’t occur naturally as a gas on Earth – it’s always combined with other elements.
      • Water, for example, is a combination of hydrogen and oxygen (H2 O).
      • Hydrogen is high in energy, yet an engine that burns pure hydrogen produces almost no pollution.
      • NASA has used liquid hydrogen since the 1970s to propel the space shuttle and other rockets into orbit.
      • Hydrogen fuel cells power the shuttle’s electrical systems, producing a clean byproduct – pure water, which the crew drinks.
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