Battery technology company Coreshell announced $24M in strategic funding to scale production of its 60-Ah battery cells made with 100% domestically sourced metallurgical silicon (MG-Si).
This funding will go toward scaling Coreshell’s production at its new 4-MWh manufacturing facility in San Leandro, California, with plans for a separate 100-MWh facility currently in site selection and design.
As a result of this production scale-up, the company is now positioned to meet growing demand. It will begin delivering commercial samples of its 60 Ah battery cells to global automakers in 2025.
This funding supports and accelerates the commercialization of silicon-anode battery cells designed to enhance electric vehicle performance by increasing energy density, extending driving range, and enabling faster charging.
It will also be used to expand the company’s executive and R&D teams to refine the production processes for its battery cells, which are made using standard equipment from South Korea’s TopMaterial. This enables Coreshell to rapidly scale its manufacturing capabilities without needing specialized infrastructure, making it poised for rapid industry adoption.
The round was anchored by Coreshell’s strategic partner Ferroglobe PLC, a global provider of silicon and ferroalloys, and Zeon Ventures. Additional financial and returning investors include Lane Ventures, Entrada Ventures, Foothill Ventures, Helios Climate Ventures, Translink Investment, Trousdale Ventures, and Asymmetry Ventures.
As Coreshell’s key materials partner, Ferroglobe provides the micrometric silicon essential for this breakthrough battery technology.
Until now, no other battery company has been able to effectively unlock the power of metallurgical silicon. Coreshell has advanced the entire cell design by creating battery chemistries made with earth abundant materials adding 30+% more range while decreasing cost by up to 25%. This was done by harnessing the power of silicon anodes using simple, unrefined metallurgical silicon that is half the cost of graphite.
The test data of Coreshell’s battery cells will be unveiled at the 2025 International Battery Seminar in March. A few key takeaways include:
- Energy density: With 80% silicon anode, the cells provided 30 to 40% higher energy density than graphite-based cells, offering a longer driving range with a smaller and lighter-weight battery.
- Cycles: Prototype cells achieved over 475 cycles with greater than 90% of its original capacity and continue to cycle. Serial production cells are expected to exceed 1000 cycles to 80% of original capacity.
- Charging rate: The battery consistently charged from 10 to 80% in under 15 minutes for hundreds of repeated cycles, delivering great fast-charging performance.
- Safety: Unlike many other silicon technologies, Coreshell’s silicon anode batteries proved to be just as reliable and safe as traditional graphite-based batteries, but with significantly higher energy density.
Filed Under: Batteries, Technology News