Hydrogen production by noise
An interesting technology was developed by scientists from the University of Wisconsin-Madison. In practical application, it will help create generators of environmentally friendly hydrogen (and not “oil”, as it is now).
Scientists have experimented with nanocrystals based on zinc oxide, which demonstrate the piezoelectric effect under the influence of high-frequency vibration (for example, vibration of the surface from sound waves). Being immersed in a liquid, the crystal generates piezoelectricity and is capable of electrolysis of water with evolution of hydrogen. Experimenting with the size of the crystals, the scientists were able to increase the efficiency of this process to 18%.
If such a piezoelectric is placed near a busy highway, then it will be able to generate hydrogen directly at a gas station.
The piezoelectric effect (PZEC) with an efficiency of 18% looks promising. For comparison, the efficiency of ordinary piezoelectric materials does not exceed 10%.
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Any vibrations that can be removed not only from sound waves, but also from any other sources of vibration, for example, from the sea surf or railway rails, are suitable for PZEC operation. Theoretically, even inside the car, you can put the energy source and the fuel tank will be slightly refueled from the conversation of the passengers.
As is known, it is on hydrogen that people are pinning hope as an alternative to oil as the main source of future energy. Efficient hydrogen engines are already there, including for cars. For example, Honda has a great hydrogen car Honda FCX Clarity . By the way, the president of Honda recently said that hydrogen is the future of the automotive industry.
Theoreticians, hydrogen is no more dangerous fuel for a car than gasoline: although a wider range of concentrations is suitable for an explosion, it must be heated to a higher temperature (500 ° C for hydrogen versus 280 ° C for gasoline).
Scientists have experimented with nanocrystals based on zinc oxide, which demonstrate the piezoelectric effect under the influence of high-frequency vibration (for example, vibration of the surface from sound waves). Being immersed in a liquid, the crystal generates piezoelectricity and is capable of electrolysis of water with evolution of hydrogen. Experimenting with the size of the crystals, the scientists were able to increase the efficiency of this process to 18%.
If such a piezoelectric is placed near a busy highway, then it will be able to generate hydrogen directly at a gas station.
The piezoelectric effect (PZEC) with an efficiency of 18% looks promising. For comparison, the efficiency of ordinary piezoelectric materials does not exceed 10%.
')
Any vibrations that can be removed not only from sound waves, but also from any other sources of vibration, for example, from the sea surf or railway rails, are suitable for PZEC operation. Theoretically, even inside the car, you can put the energy source and the fuel tank will be slightly refueled from the conversation of the passengers.
As is known, it is on hydrogen that people are pinning hope as an alternative to oil as the main source of future energy. Efficient hydrogen engines are already there, including for cars. For example, Honda has a great hydrogen car Honda FCX Clarity . By the way, the president of Honda recently said that hydrogen is the future of the automotive industry.
Theoreticians, hydrogen is no more dangerous fuel for a car than gasoline: although a wider range of concentrations is suitable for an explosion, it must be heated to a higher temperature (500 ° C for hydrogen versus 280 ° C for gasoline).
Source: https://habr.com/ru/post/88166/
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