StoreDot, Polestar demonstrate 10-min.-charging EV battery technology

StoreDot, Polestar demonstrate 10-min.-charging EV battery technology

The companies say an advantage of silicon-based anode technology is the ability to continue pushing energy density and charging rate boundaries for several more battery generations.

StoreDot and Polestar recently demonstrated battery technology that charges an EV in just 10 minutes. In the demo video, the companies successfully charged a 77kWh battery pack powered by StoreDot’s extreme fast charging high energy (300Wh/kg) silicon-dominant battery cells, installed in a fully drivable verification Polestar 5 prototype, from 10% to 80% in under 10 minutes.

The companies tell us the vehicle saw a consistent charge rate of over 310kW for the entire test procedure and a peak of more than 370kW. All cell parameters including temperature, voltage and charged capacity were monitored throughout, with the battery pack never exceeding the target operating temperature set by engineers of both teams.

The demo showcases StoreDot’s ‘drop-in’ ability to be integrated in an existing car model, the company said. It also paves the way to extreme fast charging a car using available charging infrastructure, rather than using proprietary chargers, according to the companies.

This demonstration featured a 10-minute charge with silicon-dominant battery cells in an EV and showcased charging speeds that will eliminate consumer charging anxiety, a major obstacle to widespread EV adoption, according to the companies.

StoreDot and Polestar said a key advantage of the silicon-based anode technology is the ability to continue pushing both energy density and charging rate boundaries for several more battery generations. In contrast, conventional graphite anodes are already approaching their theoretical performance limits, restricting further advancements. StoreDot said its silicon design provides a pathway to sustained innovation in areas like extreme fast charging.

The breakthrough was enabled by StoreDot’s advanced XFC battery cells and represents a milestone on the company’s path toward commercialization, proving the maturity, stability, and durability of its technology, while paving the way for an industry-wide XFC battery adoption, the company said.

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