Recently, a new material combination developed by researchers at Stanford University in the United States has helped create a rechargeable battery that can efficiently store a large amount of renewable energy generated by wind energy, solar energy, and so on. With further development, this technology can deliver energy to the grid quickly, at low cost, and at normal ambient temperatures.
This technology is called mobile battery technology, which has long been considered as one of the options for storing intermittent renewable energy. However, to date, the types of liquids capable of generating electric current have the following disadvantages: they are limited by the energy they can transfer; they require extremely high temperatures; they require the use of highly toxic or very expensive chemicals.
The assistant professor of materials science and engineering at Stanford University and his doctoral students decided to try potassium and sodium. They mixed potassium and sodium into liquid metal at room temperature and used it as the battery's electron donor or negative electrode fluid. In theory, this liquid metal has at least 10 times the available energy per gram compared to other materials. Researchers said: "We still have a lot of work to do. This is a new type of affordable mobile battery that can use the rich materials on the earth to make solar and wind energy more efficiently used."
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