Samsung’s Li-air Batteries will Almost Double the Mileage of Electric Vehicles
In the Samsung’s research laboratory was developed a prototype lithium-air battery, which allows almost 2-fold increase in the capacity of batteries and power reserve of electric vehicles in comparison with traditional lithium-ion batteries with constant dimensions.
Batteries created on the basis of the new technology, provide an impressive density of energy storage at 520 Wh/kg. As noted by the developers, if you replace the battery of a new electric car Nissan Leaf with a lithium-air, its power reserve from a fully charged battery will increase from 400 km to 700 km.
Lithium-air batteries extract oxygen from the air, it interacts with lithium to create a current. Such batteries have several advantages over traditional lithium-ion samples. They have a higher capacity, and for their manufacture, fewer materials are required, which reduces their weight and manufacturing costs.
However, this technology has its drawbacks. Thus, lithium-air batteries start to deteriorate after a certain number of charge-discharge cycles. In the case of a prototype manufactured by Samsung specialists, degradation occurs after 20 cycles. Also, these batteries take several hours to fully charge. Thus, a number of research and development will be required before the commercial use of lithium-air batteries commences. Samsung hopes to eliminate these technological barriers and begin to fully use such batteries, approximately, by 2030. For this purpose, it is planned to experiment with various materials and forms of the cathode and anode, which will improve the performance.
Currently, electromobiles are widely used lithium-ion batteries manufactured by Panasonic, Samsung SDI, LG Chem and a number of Chinese companies. As a more promising alternative, they are considered solid-state batteries, which are capable of providing an increase in capacity and accelerated charging compared to lithium-ion batteries. Toyota plans to proceed with commercial exploitation of such batteries by the mid-20s.