Future clean energy, to produce large quantities of hydrogen to be used in the form of fuel cells and hydrogen-powered vehicles, requires a relatively simple and economically efficient manner. Often, they are, in order to split the water molecules into hydrogen and oxygen, the best way to explore hydrogen from water is used without the addition of external power, the electricity generated by the direct sunlight in was achieved by the use of electricity. While being used is a combination of silicon are shown little hope in this area, slowing the conversion efficiency under investigation - hematite - The mineral form of iron. Now scientists to perform a significant improvement, in order to generate an efficient hydrogen, found a way to give hope to use two of the most abundant elements on earth.
Hematite, the release of hydrogen into lower participation of stress (in terms of energy such as light, which is the input power, chemicals are being output) may be used for low-energy dissociation of photoelectrochemical water The bolt is less than 0.3 when exposed to it there will sunlight. Unfortunately, the voltage, the division of water, to start has been calculated by determining the number of improvements in the area of hematite in order to improve the flow of current is too low.
In this context, they along, in order to obtain a more smooth surface, Boston University, University of California, Berkeley, Science and Technology of China hematite of "new growth" researcher affected have technology of the university at the highest energy efficiency. In fact, this new version, has doubled electricity production, and in practical hydrogen and vintage-scale power generation, was resigned to allow for.
"Simply to soften the surface properties of hematite, because the cousin to this close to the rust to generate the hydrogen water, in order to achieve a complete separation of the sun, to improve on for a couple of the silicon from the sand It is possible, "Boston College professor told chemical Dunwei King of Associate Professor." without borrowing the division help of this water, it is very rare, but it does not require a very expensive or scarce resources. "
Previous work of work, coating the smooth surface, using a re-evaluation of the team of the surface structure of hematite using a synchrotron accelerator at the Lawrence Berkeley National Laboratory, has achieved its photoelectrochemical time gain voltage . It focuses on the side of the palace massage hematite surface in order to determine whether lead to improvement, researchers use a physical vapor deposition layer of hematite of borosilicate glass, to create a photoanode substrate . Then, they will be fired to manufacture a thin film device such as an oxide film of iron on their surface.
And, as a result of a subsequent test of this new and improved immediate turn effort of the mixture, and 0.80 volts increased to 0.24 volts of photovoltaic power among significant of. This process of harvesting the new efficiency to achieve hydrogen 0.91 percent to this totally converted, hematite to produce any significant force, but is the first exhibited a group of amorphous silicon.
Consequently, that this study progresses it completely, using an autonomous abundantly available materials and manufacturing has been done towards the possibility of generating energy from photoelectrochemical crop is easy me showed.
"This is at hand in the fuel production, natural resources of efficient and inexpensive sun offers easily new hope that is available," the king said. "You, to get to the bottom you will be able to contribute to the realization of the future that can be supplied by sustainable renewable energy."
The results of this study, it was published in the International Journal of recently ANGEWANDTE Kimi version
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