The startup aiming to get Elon Musk's attention

January 19, 2021 // By Nick Flaherty
The startup aiming to get Elon Musk's attention
Doron Myersdorf, CEO of StoreDot, talks to Nick Flaherty about the 4680 fast charging battery cells he is developing to get the attention of Tesla boss Elon Musk and the prospect of solid state battery technology

Doron Myersdorf is trying to get the attention of Elon Musk, founder of Tesla.

Myersdorf is moving his en year old company, StoreDot, from the initial fast charging battery pouch cell it developed to a new chemistry and a new form factor. Both are aiming at electric cars rather than the previous drone and industrial applications.

“We have taken a strategic decision to focus on the EV market,” said Myersdorf. This will use the 4680 cylindrical form factor proposed by Tesla for its next generation high volume production line. “We are moving from germanium in the anode to silicon which is much more cost effective and available. Eventually this will come to a lower price than today’s graphite anode battery,” he said.

“For Gen one we demonstrated pouch cells but for Gen two we have 10Ah cell large format based on silicon in pouches (shown above),” he said. “We are also producing the 4680 cell – we have some innovation in the cooling as the faster you charge it the more thermal issues you have, we have patents which will be interesting for Tesla, to get Elon’s attention.”

The technology and challenges are similar from the first to the second generation. “In Gen one we also had the swelling challenge as Germanium and silicon are similar, and the work we do with the nanoparticles and the coating that protects the material is similar. It has been an effort of several years to control that swelling and we are replicating that methodology with EVE Energy. We have developed a proprietary organic coating,” he said. “It still swells but the nanoparticles means it swells inside the battery and keeps the swelling to 15 percent.

Next: Solid state battery tech


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