First potassium battery in 18650 format
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Group1 in the US has developed the first potassium-ion battery (KIB) in the cylindrical 18650 form factor to take on LFP cells in automotive.
The potassium ion chemistry integrates into existing lithium ion battery cell processes, ensuring a smooth transition for manufacturers, and Group1 is delivering samples to key Tier 1 Original Equipment Manufacturers (OEMs) and cell manufacturers.
The cells use Kristonite, Group1’s flagship product, a 4V cathode material in the Potassium Prussian White (KPW) class. This gives a combination of performance, safety, and cost when compared to LiFePO4 (LFP)-based LIBs and sodium-ion batteries (NIBs). The 18650 cells use commercial graphite anodes, separators, and electrolyte formulations comprised of commercially sourced components.
“We are excited to introduce the world’s first 18650 Potassium-ion battery,” said Alexander Girau, CEO of Group1. “This innovation represents years of dedicated research and product development. By distributing samples to our partners among Tier 1 OEMs and cell manufacturers, we are paving the way for widespread adoption of this transformative technology.”
The 18650 form factor is the most widely used and designed cell formats and operate at 3.7V with a path to achieve a gravimetric energy density of 160-180Wh/kg, which is standard for LFP-LIB.
Group1 was founded in 2021 and is based in Austin, Texas.
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