Events: Rare metals can be stored indefinitely absorb sunlight and solar energy (Photo)
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Ru crystal, for the formation of two Ru Foix ene molecules.
Ruthenium is a rare metal, cost very expensive
Beijing December 1 message, U.S. scientists have discovered a rare metal that can absorb sunlight and store indefinitely in the form of heat, when needed and then store the heat release. This finding for the development paved the way for the next generation of solar energy devices that can store solar energy and heat indefinitely. MIT researchers say, this metal can be used to create "heat rechargeable battery", that houses with heating.
This rare metal is called "two ruthenium Foix en." Sunlight, the two ruthenium Foix ene molecules change shape and become semi-stable state, but this state is very safe. They are able to indefinitely store the heat, by means of a catalyst, and can return to their original form, while releasing the enormous energy stored. The heat can be used to house heating.
Most solar energy devices currently used to convert solar energy into electricity or heat, but they do not have the energy can not be temporarily stored. Release heat, the use of two ruthenium Foix en fuel made from up to 200 degrees Celsius temperature. This approach is called "thermo-chemical approach" more efficient than conventional solar thermal systems, which need to use insulating materials to heat gradually released.
Research paper and lead author Jeffrey Grossman said: "It takes advantage of the many advantages of solar thermal energy, but the fuel stored heat. Stored heat can be released, the whole process more stable in the long term. You may need to when the use of stored energy. you can put the fuel under the sun, their empowerment, and then use the stored energy, used up and then place it in the sun again empowerment. "
Using this new technology is a major obstacle to the second ruthenium Foix en more rare, the use of cost is very high. Ruthenium II Ruthenium from Foix en. Ruthenium is a rare and expensive white hard metallic element ruthenium mined each year only about 12 tons. In addition, ruthenium is a by-product of nuclear fission, but the process to make it extremely expensive. Scientists believe that since it has been understood ruthenium store and release energy works, they are expected to have similar features found in other relatively low cost materials at the same time. |
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