Scientists at Russia’s Saratov State University have developed a new material that could significantly improve battery charging speeds while substantially increasing battery capacity.
اضافة اعلان
According to a statement from the Russian Science Society, researchers at Saratov State University used computer modeling to develop a new material that could potentially accelerate the charging of modern batteries by 1.5 times and increase their capacity fivefold.
Preliminary data also indicate that batteries containing the new material could retain their performance in both low and high temperatures, potentially paving the way for more advanced power systems for smartphones, laptops, and electric vehicles.
The statement explained that storing and consuming electrical charge in modern batteries are essentially opposite processes linked to the direction in which charged particles lithium ions move inside the battery.
Charging speed therefore depends on how quickly these particles can move between the electrodes, while battery capacity depends on the amount of lithium ions that one of the electrodes can store.
Materials that act as “charge reservoirs” generally offer high capacity, but they can be sensitive to extremely low or high temperatures. In addition, electrode materials based on lithium cobalt oxide (LiCoO₂) can lose their performance after repeated charging and discharging cycles.
This helps explain why some smartphones may experience battery swelling or rapidly lose battery life after years of use.
To improve the storage electrode material used in batteries, scientists at Saratov State University proposed adding graphene a carbon-based material that can be formed into a layer just one atom thick.
Using computer simulations, the researchers found that alternating layers of graphene and LiCoO₂ produced a more efficient battery material.
The researchers found that a structure in which lithium cobalt oxide was eight times greater than graphene by weight provided the best ion mobility.
Ion movement was 1.6 times faster than in pure lithium cobalt oxide, potentially allowing the battery to charge much faster.
The material’s capacity also increased by more than fivefold and remained stable even when cooled to -40°C or heated to +80°C, according to the findings.
