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Charging electric vehicles in 10 minutes

16.06.2021

The inventor of the graphite anode for lithium-ion batteries, Dr. Rachid Yazami, said he could make consumer electronics, cars and other electric vehicles charge in minutes. At one time, his invention of a graphite anode, which significantly improved the quality, stability and life expectancy of batteries.

If it now takes Tesla about 70 minutes to charge, his company's development can do it 7 times faster. If conventional batteries are charged with direct current, the new method puts more emphasis on voltage control rather than current type. He compared the voltage to the steps of a ladder - in order to move to the next, it must remain stable for some time. This method allows the batteries to "rest" during the charging process and even changes the nature of their reaction to electric current.

At KVI, where research is being conducted, extending battery life is an important factor. The technology created by the company increases their service life - for example, instead of five years, the batteries will be able to work all ten, because during the charging process they do not heat up to high temperatures and are not subject to other factors.

Other tasks to be solved are increasing the capacity and safety of batteries. According to Yazami, since the introduction of lithium-ion batteries in 1991, their specific capacity increased steadily until 2015 or 2016, when it plateaued. At the moment, there are no batteries with a capacity higher than 290 Wh per kilogram - at least commercial options. Another problem is the risk of battery fire. According to Dr. Yazami, although it is impossible to prevent such incidents, many cases can be predicted weeks or even months in advance, after which the owner himself can decide whether he needs to service or replace the battery altogether.

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