Fuel cells must be made more efficient if they are to provide a viable alternative to traditional energy sources, and the choice of materials is crucial to how efficient they are. New findings from scientists at the Royal Institute of Technology (KTH) in Stockholm, Uppsala University, and Linköping University are opening new ways of finding optimal materials for better fuel cells much more quickly.
In the future solid oxide fuel cells may supply residential areas like Stockholm with electricity. In a solid oxide fuel cell, chemically stored energy is converted to electricity with a high degree of efficiency. The figure illustrates this with the chemical reaction between oxygen and hydrogen, which yields water (plus electricity). The article by Andersson et al. explains how the electrolyte should be constructed for optimal performance.
Using methods of calculation from quantum mechanics, the researchers managed to find a better way of understanding the connection between the atomic structure of an element and its capacity to conduct oxygen ions, which is key to the efficiency of fuel cells that use solid oxides as electrolyte materials (so-called solid oxide fuel cells).
The faster the transport of oxygen ions through the material occurs, the better the fuel cell will function. The findings are now being presented in the prestigious American scientific journal Proceedings of the National Academy of Sciences, PNAS.
Magnus Myrén | alfa
Waste in the water – New purification techniques for healthier aquatic ecosystems
24.07.2018 | Eberhard Karls Universität Tübingen
Plenty of habitat for bears in Europe
24.07.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
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New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
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Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
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