Hydrogen Fuel: Production, Uses & Advantages

Hydrogen fuel is a result of a combination of hydrogen with other elements to form compounds. Hydrogen is an element that is found abundantly in nature and exists in its simplest form with just one electron and one proton. Over the years of research and inventions, scientists have finally concluded that hydrogen can be used as a better alternative to conventional fuels. The concepts like ecological footprint and carbon footprint have grabbed the attention of today’s world because of the increasing carbon emissions, especially from fossil fuels. And on the other hand, hydrogen fuel is a zero-carbon emission fuel that shall help in carbon neutrality for the future goals of reducing climate risks.

Key Takeaways: Hydrogen, halogen, fuel, clean energy, power, renewable source, climate crisis, electrolysis, water, fuel cell

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What is Hydrogen Fuel?

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Hydrogen is the simplest element that is found abundantly in nature. It is known to have properties similar to that of halogen as well as of alkali metal. Additionally, hydrogen has been seen as an alternative to conventional fuels because of its capacity of producing a large amount of heat on combustion in presence of oxygen. The fuel so produced on the burning of hydrogen under oxygen is a zero-emission fuel that can effectively contribute to maintaining carbon neutrality.

Hydrogen fuel cell not only produce enough energy as compared to other fuels but is also known for producing the least pollutants in the atmosphere. Oxygen and hydrogen combine to generate electricity and are known for producing water as a by-product. The hydrogen fuel cells are also known to undergo the process of electrolysis in which the electrically charged particles are carried away from one electrode to another.

Also Check: Fuel Efficiency

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What is Hydrogen Fuel Cell?

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A fuel cell is usually an electrical device that is known for converting chemical or molecular energy into electrical energy. Such as, in hydrogen fuel, its proton exchange membrane uses oxygen and hydrogen as fuel and generates electricity, heat and water. Since hydrogen is known to use nitrogen as an impurity, the fuel contains nitrogen oxide as a pollutant. The hydrogen-fuelled fuel cells are known to have the least impact on the environment. However, nature doesn’t have any natural or pure source of hydrogen or any specific hydrogen reservoir.

Hydrogen Fuel Cell

In order to produce hydrogen, water can be electrolysed in reverse of the fuel cell reaction. In terms of working, the hydrogen atoms enter at an anode of a fuel cell, through this the atoms are stripped off their electrons and thus, the hydrogen atoms become ionized and carry the positive charge. If the electrons are negatively charged, it provides the current to work through the wires. A conversion device such as an inverter is required so that the DC output of the fuel cell must be routed through it if alternating current (AC) is needed. This hydrogen fuel cell is an electrochemical system that is known to combine both hydrogen and oxygen in order to generate energy and simultaneously is known to produce water as a by-product.

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Production of Hydrogen Fuel

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Hydrogen is an element that is abundantly found on earth. However, it is very difficult to find the pure hydrogen around us. Therefore, it is required to generate primary energy at an industrial level. Electrolysis and Steam Methane Reforming are two extremely frequent methods that are used for the production of hydrogen fuel.

1. Production Through Steam Methane Reforming

• Firstly, hydrogen is extracted from methane, since the chances of availability of the pure form of hydrogen are very rare.
• Allow carbon dioxide and carbon monoxide to be liberated into the atmosphere.
• This flow of greenhouse gases into the atmosphere leads to conditions of climate risk.

2. Production Through Electrolysis

• Firstly, there has to be the separation of the atoms of hydrogen and oxygen.
• This process can involve both renewable and non-renewable sources of energy, such as wind energy, solar energy, hydro energy, biomass, fossil fuels, etc.
• Production through electrolysis is considered to be a cost-effective way.

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Hydrogen Economy

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The climate crisis of the world in the twenty-first century has led the focus of the masses towards using hydrogen as a low-carbon energy source. Hence, the concept of hydrogen economy or economy of hydrogen is used to refer to this vision of a clean economy.

1. For instance, replacing natural gas or fossil fuels as a source of energy with clean energy sources like solar energy or hydrogen fuel.
2. The usage of hydrogen fuel has an advantage wherein the energy transmission is done in the form of hydrogen instead of electric power.
3. Using the hydrogen fuel by mixing it with CNG gas improves its overall efficiency. For instance, it is also used in hydrogen fuel cells to create electricity.

• Uses of Hydrogen Fuel

Hydrogen fuel is the best alternative to the conventional fuels. It has similar levels of efficiency as that of any natural gas. It can be used to power almost every kind of vehicles or electrical devices, such as, generator, electric motors, car, boats or aeroplanes. However, storing hydrogen in cryogenic tanks or high-pressure tanks is quite difficult which creates a major problem for the same. Governments in major developed, as well as developing countries, are planning to completely replace the fossil fuels with the hydrogen fuel in the coming years.

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Advantages of Hydrogen Fuel

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The various advantages of hydrogen fuel are as follows:

• Combustion of hydrogen leads to the production of only water vapour as a by-product.
• None of the pollutants or greenhouse gas is emitted during the process.
• It is also known to delete the little tailpipe pollution.
• It effectively contributes to making the countries achieve the goals of carbon neutrality.
• It also has the capacity to power the fuel–cell engine.

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Things to Remember

• Hydrogen fuel is the cleanest source of energy which is known to generate the least of the pollutants, except that of the water vapour.
• Hydrogen fuel is known to carry nitrogen oxide as a pollutant because nitrogen gas acts as the impurity for the hydrogen molecule.
• In the periodic table, hydrogen has the first place because it is considered lighter than the air.
• Hydrogen fuel has the capacity to power the fuel–cell engine.
• The hydrogen gas remains in its liquid state only under the temperature of 20k. Thus, storing hydrogen fuel becomes quite difficult.

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