EV batteries produced with five minute charging time
New lithium-ion batteries capable of charging in five minutes have been produced by Israeli company StoreDot and manufactured by Eve Energy in China on standard production lines.
The extreme fast-charging technology has already been implemented in drones, phones and scooters, with the latest 1000 units produced specifically to showcase the application to vehicle manufacturers and related companies.
The batteries possess the ability to charge in just five minutes, however, this is not compatible with today’s charging infrastructure. Using available technology, StoreDot aims to deliver around 150km of range in five minutes in 2025.
“The number one barrier to the adoption of electric vehicles is no longer cost, it is range anxiety,” reports Doron Myersdorf, CEO of StoreDot. “You’re either afraid that you’re going to get stuck on the highway or you’re going to need to sit in a charging station for two hours. But if the experience of the driver is exactly like fuelling [a petrol car], this whole anxiety goes away.”
“A five-minute charging lithium-ion battery was considered to be impossible,” Myersdorf added. “But we are not releasing a lab prototype, we are releasing engineering samples from a mass production line. This demonstrates it is feasible and commercially ready.”
Current lithium-ion batteries use graphite as one electrode, into which the ions are pushed to store charge. When these are rapidly charged, the ions can become congested and short circuit the battery.
The StoreDot batteries replaces the graphite with semiconductor nanoparticles into which the ions can pass quickly and easily. These nanoparticles are currently produced from germanium, which is water soluble and simpler to handle during the manufacturing process.
StoreDot believes that nanoparticles can be further improved through the use of silicon, with prototypes expected later this year.
“The bottleneck to extra-fast charging is no longer the battery,” Myersdorf states, but rather the charging stations and grids that will need to be upgraded. To achieve this, StoreDot is working with BP.
“BP has 18,200 forecourts and they understand that, 10 years from now, all these stations will be obsolete, if they don’t repurpose them for charging – batteries are the new oil.”
StoreDot is in a race with numerous other companies around the world who are also investing in fast-charging batteries. Telsa, Enevate and Sila nanotechnologies are all exploring the use of silicon electrodes.
Source: The Guardian | Electric car batteries with five-minute charging times produced.
21 January 2021