US scientists develop liquid batteries for storage of solar energy
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Beijing time 1 January 22nd news, according to foreign media reports, if the development of solar energy to put forward a very attractive action slogan, "do not have to be abandoned" seems very appropriate. Solar technologies such as photovoltaic cells that trap photons and solar thermal collectors that can be used to collect heat are not designed for storing solar energy. These technologies must wait for the sun to come out, then convert solar energy into electricity and heat energy, and can not store solar energy. Any extra sunshine beyond the edge of the device (actually a large amount) is like a milk spilled from the cup, wasted in vain.
luckily, Jeffrey Grossman and his colleagues at the Massachusetts Institute of Technology have begun a preliminary study to find a new way to capture and store solar energy, allowing the renewable energy to store and transport indefinitely. The research is based on two ruthenium rich compounds, which are derived from rare and expensive platinum like ruthenium.
Grossman and his team found that two ruthenium and finene molecules change shape and form semi stable form when they absorb sunlight. By adding a catalyst, it can restore the molecule to its normal form. This is a very interesting phenomenon. The molecules can absorb sunlight and maintain a semi stable state before the catalyst is restored to normal form. After changing the form of the catalyst, the absorbed solar energy will be released, which can be used for heating the house or supplying electricity for the household appliances.
Grossman believes that the two ruthenium rich molecule can work in liquid form, convert and store solar energy. "There are many ways to work with two ruthenium rich molecules at a system level," he wrote in an e-mail to "Discovery News." One possible way of using fuel is to store it in deep pools that can be exposed to sunlight. This fuel can get energy from the sun 24 hours a day. Once the energy is obtained, the fuel will be pumped out and transported through pipes or other channels to the use point, and the use point can be located near or located in the far area. "
Grossman told the news office at the Massachusetts Institute of Technology that two ruthenium fuwatts can be made to fuel a temperature of 200 degrees Celsius, enough to heat a house or to drive a engine to generate electricity. The only problem and a big obstacle is that two ruthenium rich is expensive, and it is not practical to use it as a rechargeable liquid battery. But because of the basic understanding of the mechanism, Grossman and his colleagues think they can find another molecule that is cheaper and has the same properties as two ruthenium - rich allenes.