Group1 has unveiled the world’s first Potassium-ion battery (KIB) in the 18650 cylindrical form factor, marking a significant advancement in battery technology. This innovation, free from critical minerals such as nickel, cobalt, copper, and lithium, offers a sustainable and cost-effective alternative to traditional lithium-ion batteries (LIBs). The KIB technology integrates smoothly with existing manufacturing processes, facilitating a seamless transition for manufacturers. The launch was highlighted at the 14th annual Beyond Lithium Conference, where Group1 showcased the development journey from coin-cell to pouch-cell to the 18650 format, drawing attention from scientists and industry leaders. The KIB, utilizing Group1’s Kristonite™—a 4V cathode material in the Potassium Prussian White (KPW) class—promises enhanced performance, safety, and cost-effectiveness compared to LiFePO4-based LIBs and Sodium-ion batteries.
Group1’s CEO, Alexander Girau, expressed excitement about this breakthrough, emphasizing the company’s commitment to advancing energy storage technology. The new 18650 KIBs use commercially available components like graphite anodes and separators and operate at 3.7V. They demonstrate excellent cycle life and discharge capability, with an energy density target of 160-180Wh/kg, comparable to LFP-LIB standards. This innovation not only provides a viable alternative for demanding mobility applications but also alleviates supply-chain pressures and supports domestic manufacturing. Founded in 2021 in Austin, TX, Group1 is dedicated to pioneering sustainable, high-performance energy storage solutions, inspired by the legacy of Nobel laureate Professor JB Goodenough.
