4 types of silicon technology that will revolutionize EV batteries

As automakers and battery cell manufacturers race to develop more efficient and faster-charging EV batteries, there is one material that has gained significant traction in replacing the regular graphite in the battery’s anode: silicon.

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

But adding silicon to the anode comes with: certain challenges

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

For that reason, several companies are exploring ways to address these issues and harness the potential of silicon to improve battery performance.

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

Nano-porous silicon

Dutch scale-up E-Magy produces structured silicon particles with nanoscale pores that do not swell and break.

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

E-magy nano-porous silicon