Energy & Green Tech

New system for widespread availability of green hydrogen

Hydrogen researchers at Graz University of Technology, together with the Graz-based start-up Rouge H2 Engineering, have developed a cost-effective process for the decentralised production of high-purity hydrogen.

Energy & Green Tech

Energy of the future: Photosynthetic hydrogen from bacteria

The transition from fossil fuels to a renewable energy supply is one of the most important global challenges of the 21st century. In order to achieve the internationally-agreed target of limiting global warming to a maximum ...

Energy & Green Tech

More efficient, longer-lasting solid oxide fuel cells

Solid oxide fuel cells, or SOFCs, are devices that produce both electricity and heat by oxidizing a fuel such as natural gas or biogas. This energy-efficient, zero-emission technology has the potential to meet domestic and ...

Energy & Green Tech

New bipolar plates from thin metal foils for fuel cells

At the Fraunhofer Institute for Machine Tools and Forming Technology IWU, researchers are developing advanced technology for manufacturing fuel cell engines with the aim of facilitating their fast and cost-effective serial ...

Energy & Green Tech

Instant hydrogen production for powering fuel cells

Since the Industrial Revolution, the environmental impacts of energy have posed a concern. Recently, this has driven researchers to search for viable options for clean and renewable energy sources.

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Fuel cell

A fuel cell is an electrochemical conversion device. It produces electricity from fuel (on the anode side) and an oxidant (on the cathode side), which react in the presence of an electrolyte. The reactants flow into the cell, and the reaction products flow out of it, while the electrolyte remains within it. Fuel cells can operate virtually continuously as long as the necessary flows are maintained.

Fuel cells are different from electrochemical cell batteries in that they consume reactant from an external source, which must be replenished – a thermodynamically open system. By contrast, batteries store electrical energy chemically and hence represent a thermodynamically closed system.

Many combinations of fuels and oxidants are possible. A hydrogen fuel cell uses hydrogen as its fuel and oxygen (usually from air) as its oxidant. Other fuels include hydrocarbons and alcohols. Other oxidants include chlorine and chlorine dioxide.

The principle of the fuel cell had been demonstrated by Sir William Grove in 1839, and other investigators had experimented with various forms of fuel cell. The first practical fuel cell was developed by Francis Thomas Bacon in 1959.

This text uses material from Wikipedia, licensed under CC BY-SA