Texas-based battery developer Group1 has introduced the first potassium-ion battery (KIB) in the form of an 18650 cylindrical battery cell. This innovation was unveiled at the 14th annual Beyond Lithium Conference at Oak Ridge National Laboratory.
Group1’s KIB technology promises a sustainable, efficient, and cost-effective alternative to traditional lithium-ion batteries, as it is free of critical minerals such as nickel, cobalt, copper, and lithium. The company states that the new battery can be seamlessly integrated into existing lithium-ion battery (LIB) processes. Initial samples are being distributed to key original equipment manufacturers (OEMs) and cell manufacturers.
“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 battery cell format is the most widely used in the industry. Group1’s new 18650 batteries use commercial graphite anodes, separators, and electrolyte formulations made from commercially sourced components. The company claims these batteries offer superior cycle life and excellent discharge capability, operating at 3.7V. They have demonstrated a practical path to achieve a gravimetric energy density of 160-180Wh/kg, which is standard for lithium iron phosphate (LFP) LIBs.
Founded in 2021 and based in Austin, Texas, Group1 focuses on creating sustainable, high-performance energy storage solutions. The company builds on the legacy of Nobel laureate Professor JB Goodenough, who collaborated with SK Innovation on battery technology in 2020.
