Automotive
The European Union approved on Monday a deal that will lead to the phaseout of sales of new fossil fuel cars by 2035, with a final green light by energy ministers due on Tuesday.
15 hours ago
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13
Business
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 ...
Mar 24, 2023
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6
Energy & Green Tech
A new zero-emissions ferry powered by hydrogen fuel cell technology has arrived in San Francisco, where it will undergo trial runs and preparations to carry passengers later this year.
Mar 15, 2023
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7
Engineering
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 ...
Mar 2, 2023
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5
Energy & Green Tech
We developed an algorithm to massively improve images of hydrogen fuel cells, with future applications in medical scanning.
Feb 21, 2023 dialog
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153
Energy & Green Tech
Burning a blend of hydrogen and natural gas to heat our homes could save as much as 5% on carbon emissions without changing existing infrastructure, says a University of Alberta expert in hydrogen energy.
Feb 8, 2023
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38
Energy & Green Tech
A new study compares the life-cycle greenhouse gas (GHG) emissions of electric, hydrogen, natural gas and diesel trucks and buses in Europe. The results indicate a clear pathway to decarbonize the sector: Battery electric ...
Feb 7, 2023
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26
Energy & Green Tech
With rising concerns about energy and water management, microbial electrochemical technologies (METs), such as microbial fuel cells, have emerged as promising solutions. However, actual progress in these technologies have ...
Jan 19, 2023
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21
Energy & Green Tech
The precious metal platinum is a key catalyst for the chemical reactions at the heart of the next generation of more compact, high-performing hydrogen fuel cells. But platinum's high cost is preventing widespread adoption ...
Dec 15, 2022
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8
Energy & Green Tech
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.
Dec 15, 2022
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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
