Tuesday, 30 November 2021 20:05

Mercedes, Stellantis Invest in Factorial Energy

Written by Mark Kane, Inside EVs
Factorial Energy solid-state battery cell. Factorial Energy solid-state battery cell.


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Factorial Energy, a Massachusetts-based 6-year-old start-up developer of solid-state batteries, has announced a major investment and collaboration agreements with two new automotive partners: Mercedes-Benz and Stellantis.

Both new partners are making "strategic investments" in Factorial Energy and are entering into joint collaboration agreements, similar to Hyundai Motor Company and Kia Corporation in October.


Attracting three major automotive groups---Daimler, Hyundai Motor Group and Stellantis---is a clear sign Factorial Energy's battery technology is very promising.


In the case of Daimler, the investment amount has been described as "a high double-digit million dollar amount."


The company explained its proprietary solid electrolyte material and Factorial Electrolyte System Technology (FEST) enables it to produce safe and reliable solid-state battery cells, which, as first in the world, reached 40 Ah capacity at room temperature.


"Factorial’s advances are based on FEST™ (Factorial Electrolyte System Technology), which leverages a proprietary solid electrolyte material that enables safe and reliable cell performance with high-voltage and high-capacity electrodes at room temperature," the company said. "Earlier this year, Factorial became the first to reach the 40 Amp-hour benchmark with a solid-state cell that works at room temperature, demonstrating the scalability of the FEST™ electrolyte."


The energy density also appears to be significantly improved compared to conventional lithium-ion technology with a liquid electrolyte, as the company promises 20% to 50% increase in driving range (without posting Wh/kg and Wh/l numbers).


The brief info suggests also the costs per kWh will be reduced because the existing manufacturing infrastructure might be repurposed for Factorial’s solid-state battery type.


“These partnerships will accelerate our ability to commercialize our core technology," said Factorial Energy CEO Siyu Huang, Ph.D. "With our new partners we can develop batteries that not only enable safer and longer driving range vehicles, but that are also...

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