Corporate investment could improve climate-tech innovation

Corporate investments in climate-tech start-ups are a growing but overlooked aspect of energy innovation. According to a new report from Morgan Edwards, a professor at the La Follette School of Public Affairs at the University ...


Researchers delve into the role of water in PEM fuel cells

Proton-Exchange Membrane Fuel Cells (PEMFCs), directly converting fuel into electric energy through a solid electrolyte membrane, have become one of the most promising devices for the electrical conversion of hydrogen in ...

Energy & Green Tech

Heavy-duty trucks drive clean hydrogen to the next level

Greenhouse gas emissions have been declining steadily in the EU in recent years, dropping by over a quarter between 1990 and 2019. However, transport is one sector that has bucked the trend, despite advances in technology.

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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