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When the boat is docked, the surplus solar energy is used to produce hydrogen, which is stored in high-pressure tanks for later use.

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First of all, the seawater is pumped, desalinated and then stored aboard. This fresh water is then purified before being electrolysed by using the surplus photovoltaic energy available.

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The electrolysers produce hydrogen at pressures up to 50 bars. The hydrogen is initially purified dried then compressed at bars and stored in specially designed tanks.


In this way, nearly kg of hydrogen can be stored aboard, which represents a range of 6 to 7 extra days. The hydrogen will then be converted back into electricity via two 30kW fuel cells.

The Truth about Hydrogen

These fuel cells maintain the level of charge in the batteries or can be used to run the electric engines if need be. Discover Plastic Omnium, an electric propulsion protagonist. Accueil Hydrogen and its fuel cell Hydrogen and its fuel cell.

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A gas with very high energy density. There are numerous applications for hydrogen technologies, as much in the sector of mobility for electric vehicles, lorries, boats and even planes, as for stationary applications as a replacement for diesel generators. An efficient solution for energy storage. Hydrogen is the most appropriate technology for seasonal mass storage.

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Hydrogen is most frequently stored in tanks at medium or high pressure. A solution for sharing energy. Hydrogen can absorb the surplus energy produced by renewable sources and be reused for operations like regulating the network or be transported to provide mobility.

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The specifics of a hydrogen fuel cell vehicle can vary depending on the manufacturer, but typically they can refuel in minutes and drive similar ranges to that of a petrol or diesel car. In regards to larger transport options, hydrogen vehicles are entering the market at a steady pace. In other transport sectors, fuel cells are being developed for trucks, boats and ferries.

For hydrogen transport to succeed, vehicle manufacturers, fuel suppliers and governments need to work together. There is a need for more hydrogen vehicles to be available as well as sufficient refuelling infrastructure to make it a viable and attractive alternative for consumers.

Hydrogen cars may be the future - they are not yet the present

Most importantly, a low cost, scalable, reliable and low emission source of hydrogen fuel needs to be established. Shell has become a leader across the globe in working with different organisations to grow the hydrogen network. In Germany, Shell is part of a joint venture with industrial gas manufacturers Air Liquide and Linde, car manufacturer Daimler and energy companies Total and OMV, to develop a nationwide network of hydrogen refuelling stations for new hydrogen car models by In it became the first branded fuel retailer to sell hydrogen at one of its retail sites in the UK.

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The new hydrogen refuelling station in Cobham, on the outskirts of London, is the first of three hydrogen stations Shell plans to open in the Southeast of England. Whilst in the USA, Shell has two hydrogen filling stations in Los Angeles, and is currently working in partnership with Toyota, with the support of the State of California, to further develop its hydrogen-refuelling network. With the cooperation of vehicle manufacturers, fuel suppliers and government, as the hydrogen refuelling network continues to grow so should the accessibility and interest in hydrogen fuel cell vehicles.

But despite the growing need for hydrogen, at the moment its production remains costly or carbon dioxide intensive. Hydrogen production requires two basic elements — a chemical feedstock to act as a source of hydrogen, and an energy source to in effect split the hydrogen out from the feedstock material to form pure hydrogen. Hydrogen atoms are the 8 th most common type of atoms found on earth, but none if that hydrogen is present as pure hydrogen — it is bonded into other chemicals — principally in water, but also fossil fuels like natural gas or coal, or other bio-molecules like proteins, nucleic acids, sugars, starches and the other compounds that make up living cells.

The two most common sources for hydrogen are fossil fuels also known as hydrocarbons — compounds that consist of hydrogen and carbon , and water. So much so that it has become a barrier to growth in clean energy applications — there is no point in driving a car using hydrogen if that hydrogen is sourced from CO2 intensive processes.

The second mainstream production method of hydrogen is electrolysis, which is potentially emission free. However, the process requires an incredible amount of energy to produce hydrogen.