Energy & Green Tech
Bipolar membranes are a class of ion-conductive polymers comprised of two oppositely charged layers, known as the cation-exchange and anion-exchange layer. These membranes are central to the functioning of various technologies, ...
Energy & Green Tech
Oxide ion conductors used in solid-state fuel cells often fail to reach full potential when operating at temperatures below 500 oC, but researchers from Tokyo Tech have recently found a solution to this problem. They demonstrated ...
Apr 10, 2024
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Energy & Green Tech
Vast amounts of worldwide emissions can be traced back to the supply chains that provide us with the goods we need. Some studies estimate that they generate up to two-thirds of global carbon emissions.
Apr 9, 2024
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Energy & Green Tech
Medium- and heavy-duty vehicles (MHDVs) account for just 5% of vehicles on the road in the United States, yet they are responsible for 21% of transportation-related greenhouse gas emissions. Reducing MHDV emissions is vital ...
Apr 4, 2024
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Electronics & Semiconductors
Researchers in the UNC-Chapel Hill Chemistry Department are using semiconductors to harvest and convert the sun's energy into high-energy compounds that have the potential to produce environmentally friendly fuels.
Apr 2, 2024
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Engineering
A team of physicists and engineers at Technical University of Denmark reports that it is possible to build a working selenium–silicon tandem solar cell, a combination that could theoretically improve the efficiency of solar ...
Energy & Green Tech
Proton exchange membrane fuel cells (PEMFCs) stand at the forefront of clean energy solutions for vehicles, promising zero emissions, high efficiency, and minimal noise. Despite these advantages, the path to widespread adoption ...
Mar 25, 2024
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Engineering
Fuel Cell Vehicles (FCVs) are typically powered by polymer electrolyte membrane fuel cells (PEMFCs), which convert the chemical energy of hydrogen and oxygen into electricity and produce water in the cathode.
Mar 19, 2024
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Energy & Green Tech
Solar rays focused on concentrator photovoltaic cells using parabolic mirrors not only supply electricity, but also thermal energy for industrial processes, heating or cooling. Three technological innovations significantly ...
Feb 22, 2024
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Energy & Green Tech
A novel approach to address environmental challenges is developing and commercializing robust hydrogen fuel cells. These cells contain a polymer electrolyte membrane that serves as a barrier between the electrodes (the conductors ...
Feb 6, 2024
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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
