The international team of scientists has created the first combined battery for electrocarbers, characterized by high performance. The invention has been described in the SCIENCE log.
Over the study, scientists of the University of California in San Diego and LG specialists worked. They managed to create a high-performance solid-state battery with clear silicon anode. In scientific work it is said that during the experiment, it was possible to combine two technologies for the production of batteries for electric cars in one.
In the “Battery of the Future”, both solid-state electrolyte and a silicon anode, which makes it completely silicon and solid-state. The first tests have shown that the car battery is safe, durable and energy-intensive. According to experts, the development can be applied both in electric vehicles and in separate electrical systems.
The scientific article says that silicon anodes are known for their energy density, which is ten times more than graphite anode. However, they expand and shrink when charging and discharge the battery. The problem of solid-state batteries is that when they are operating, it is necessary to spend additional energy to increase the temperature. The silicon anode is reported, it allows you to overcome these restrictions. The new battery provides a higher charge rate at room or low temperature, while maintaining high energy density.
Scientists found out that in laboratory conditions the battery retained about 80 percent of its capacitance after 500 charging cycles. “Thanks to the latest LG discoveries, much closer to the implementation of the technology of fully solid-state batteries, which will significantly diverge our battery line,” said LG Energy Solution Manager Men Hwan Kim.
In mid-September, the Israeli company Storedot introduced a prototype of a car battery charged in ten minutes. Increasing the charge rate is achieved by replacing graphite in an anode element on metaloid nanoparticles, such as silicon.