StoreDot achieves 1100 cycles with “100in4” battery cells.

According to the company, the goal of 1,100 cycles was achieved using a prototype cell earlier than planned. This cell is also said to have a projected energy density of 340 Wh/kg “in full-size EV form.” The cell chemistry on the cathode is given as “NMC9xx”, while the company's silicon-based technology is used on the anode

This means, as is often the case with such reports on battery developments, that it is a laboratory test of a small-scale model cell and the results cannot be transferred 1:1 to battery cells ready for installation in vehicles. In the case of the current StoreDot demonstrator, it is a 3 Ah cell, so it is hardly suitable for automotive applications. The “100in4” technology will then be scaled up to a 140 amp cell. Tests with this cell should be much more meaningful.

“Although this is an early prototype and there are still challenges to overcome, we can leverage the experience we have gained to seamlessly scale from a 3Ah cell to a >100Ah EV in just a few months,” says Doron Myersdorf, CEO of StoreDot. “. “We believe our roadmap provides a sustainable, practical and proven solution. We are on the path to ultra-fast charging that will accelerate the mass adoption of electric vehicles.”

StoreDot presented its “100inX” strategic technology roadmap in March 2022. The first phase, “100in5,” is scheduled for 2024 and should be able to recharge electricity over a distance of 100 miles or 160 kilometers in five minutes. The “100in3” technology (i.e. recharging 160 kilometers in 3 minutes) was announced for 2028. These are supposed to be solid-state cells with an energy density of about 450 Wh/kg. “100 in 4” for 2026 would be the logical intermediate step.

The Israelis demonstrated in October 2022 that StoreDot can achieve high cycle numbers even with cells in a production-ready format. At that time, a large bag cell with “100in5” technology was subjected to 1,200 cycles – and even after that, the 30Ah cell still had more than 80 percent of its original capacity.

Until now, StoreDot has focused primarily on pouch cells. At the end of January 2024, the company announced that it would also transfer its battery technology to prismatic cells. Unlike soft-pack cells, prismatic cells have a rigid shell and can therefore also be subjected to structural loads in the battery pack – as is the case with many cell-to-pack concepts. On the other hand, pouch cells are first assembled into modules and then integrated into the battery pack – which, with identical power density at the cell level, results in lower power density at the pack level.

prnewswire.com