Dr Rachid Yazami is best known for inventing the graphite anode used inside lithium-ion batteries, and he now appears to be launching a technological revolution with a newly developed charging technology that can recharge electric vehicles (EVs) in as little as 10 minutes. In an interview with The Register, Yazami said.
We have developed new technology that is the fastest battery charging technology in the world. We recently completed charging a high-density battery in 10 minutes. If you compare that to Tesla's 70 minutes, we're seven times faster.
To achieve this, Yazami is using a technique called "non-linear voltammetry" (NLV), which regulates the voltage at different levels. If you think of these levels as steps, then at a given step the necessary voltage remains constant until it reaches a higher step. In doing so, the voltage is changed to the appropriate amount required for the new step. This process continues and eventually, when the highest step is reached, that is when the battery is fully charged. This method is therefore known as non-linear voltammetry; because the voltage is gradually increased in steps.
According to Yazami, this technique helps to "make the battery happy" and thus increases the speed of charging, as it improves the battery's tolerance to current.
However, Rachid Yazami is not the only one who is researching and developing fast-charging batteries. Earlier this year, StoreDot, a company specialising in extreme fast-charging (or XFC) batteries, announced that it had produced a next-generation car battery that could charge a two-wheeled electric vehicle in as little as five minutes.
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