Tech Updates

4-types of silicon tech that’ll revolutionize EV batteries

As car manufacturers and battery cell makers race to develop more efficient and faster-charging EV batteries, there’s one material that’s been gaining significant traction in replacing mainstream graphite in the battery’s anode: silicon.

That’s because silicon has a theoretical energy capacity 10 times higher than that of graphite, meaning it can significantly increase an EV’s range. It can also absorb lithium-ions much quicker during charging — speeding up the process.

But adding silicon to the anode comes with certain challenges.

The material’s tendency to expand approximately 400% of its original size during the charging cycle can cause the silicon particles to crack, and, in turn, the anode to disintegrate. This leads to energy loss and battery degradation.

For that reason, various companies are exploring ways to tackle these issues and to exploit silicon’s potential in improving battery performance.

Here are the most prominent technologies that promise to be a true game changer for the industry:

Nano-porous silicon

Dutch scaleup E-Magy manufactures structured silicon particles with nano-scale pores that don’t swell and break.

It claims that with its technology EV batteries can enjoy 40% higher energy density and up to five times faster charging without any impact on battery lifetime.