October 28, 2024 – Australia’s Li-S Energy, a leader in lithium-sulfur (Li-S) battery technology, has announced a significant improvement in the energy density of its lithium-sulfur battery cells. The company’s latest 10 Ah semi-solid-state cells now achieve an energy density of 498 Wh/kg on the first discharge, and 456 Wh/kg after formation cycling. These results put Li-S Energy at the forefront of lithium-sulfur technology, as the cells continue to perform robustly in ongoing testing.
Li-S Energy’s Chief Technical Officer, Steve Rowlands, highlighted the progress, stating that the latest iteration of their GEN3 Li-S battery cells represents a substantial improvement from initial findings. The Brisbane-based company introduced this third-generation cell chemistry in April 2023, claiming double the gravimetric energy density and improved volumetric density compared to traditional lithium-ion batteries. Rowlands stated, “Many companies report energy density results based on smaller cells like coin cells or minimal pouch cells. At Li-S, however, we’re testing full-size 10 Ah and 20 Ah cells produced on our automated production line, delivering results that are representative of real-world performance.”
Aiming for Commercialization Across Key Sectors
The high energy density of nearly 500 Wh/kg moves Li-S Energy closer to its goal of commercializing lithium-sulfur technology, targeting industries where low weight is critical, such as drones, defense, and electric aviation. Li-S Energy CEO, Lee Finniear, underscored the potential of this advancement: “This breakthrough means an even lighter battery, further extending the range, payload, and operating time of our partners’ products.”
Li-S Energy is already working with notable industry partners, including Queensland-based drone manufacturer V-TOL Aerospace and solar cell maker Halocell Energy in New South Wales, to develop drones that use lithium-sulfur batteries. Finniear added that demand is especially high in aerospace, defense, and drone sectors, where energy density, reliable production, and scalable manufacturing are crucial.
Scaling Production and Expanding Partnerships
With its state-of-the-art 2 MWh production facility in Victoria, Li-S Energy is focused on enhancing cell reliability, improving production precision, and boosting manufacturing throughput. Finniear expressed confidence in expanding Li-S Energy’s partner network, as the latest advancements are expected to attract significant global interest. The company is also collaborating with its partners on battery management systems and battery pack designs to support seamless integration into their applications.
The results of Li-S Energy’s latest cells reinforce its commitment to advancing lithium-sulfur technology and providing innovative solutions for high-demand industries. With increased energy density and an efficient production pathway, Li-S Energy is positioning itself as a leader in the next generation of battery technology.
