The storage of hydrogen in fuel cell powered cars can probably be greatly improved by increasing the working temperature of the fuel cell. With the use of magnesium powder, the storage of hydrogen can take place more efficiently and safely and at a higher temperature. This is the conclusion of Gijs Schimmel, who will defend his PhD thesis at TU Delft on 1 February.
One of the main problems in the transition to a hydrogen economy is the storage of hydrogen, for use in vehicles, for example. Currently, this is done by storing the gas at high pressures or very low temperatures. Delft researcher, Gijs Schimmel, finds the high pressure option suitable for use in busses, “After all, on a bus there is space for a few high pressure cylinders. In cars this is not the case. Also, with such a tank, you are dealing with pressures of up to 350 bars, while in the case of LPG tanks, the pressure is restricted to 10 bars for safety reasons.’
During his research at the Delft Institute for Sustainable Energy, Schimmel therefore studied the possibilities of the storage of hydrogen in powdered magnesium. Hydrogen storage in this kind of metal hydrides has been researched for a long time, but according to Schimmel, the problem remains that too much energy and too high a temperature is needed to extract the hydrogen from the compound, which negatively effects the efficiency of the process. Schimmel points out that an adjustment in the fuel cell itself may provide a solution. If the fuel cell were to work at a higher temperature than normal (between 200 and 300 °C in stead of 80 °C for most current fuel cells), then the ‘excess heat’ from the fuel cell could be used to efficiently extract hydrogen from the storage tank.
Maarten van der Sanden | alfa
Improved stability of plastic light-emitting diodes
19.04.2018 | Max-Planck-Institut für Polymerforschung
Intelligent components for the power grid of the future
18.04.2018 | Christian-Albrechts-Universität zu Kiel
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...
In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...
In an article that appears in the journal “Review of Modern Physics”, researchers at the Laboratory for Attosecond Physics (LAP) assess the current state of the field of ultrafast physics and consider its implications for future technologies.
Physicists can now control light in both time and space with hitherto unimagined precision. This is particularly true for the ability to generate ultrashort...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
19.04.2018 | Materials Sciences
19.04.2018 | Physics and Astronomy
19.04.2018 | Physics and Astronomy