Li-S Energy Limited is an Australian technology company focused on developing advanced lithium-sulfur (Li-S) and lithium metal battery technologies. Established in 2019 with headquarters in Brisbane, Australia, the company works to create next-generation energy storage solutions. Li-S Energy is publicly listed on the Australian Securities Exchange (ASX: LIS) and operates with a mission to provide lighter, cleaner, and greener batteries that offer substantially higher energy density than existing lithium-ion technology. Their focus is on shaping the future of renewable energy and electric mobility by meeting the increasing global demand for advanced battery solutions. The company’s efforts contribute to addressing key limitations of current battery chemistries.
Battery Technology
Li-S Energy’s core technology centers on lithium-sulfur batteries, incorporating unique nanomaterials to enhance performance. They utilize Boron Nitride Nanotubes (BNNTs) and a proprietary nano-composite known as Li-nanomesh™. These materials improve battery strength, cycle life, and overall performance. Their Li-S batteries offer over twice the gravimetric energy density and improved volumetric energy density compared to traditional lithium-ion batteries. This results in lighter batteries, allowing applications like drones, electric vehicles, and potentially electric aircraft to achieve significantly increased range or carry more payload at the same weight. A key environmental benefit is the use of abundant sulfur instead of nickel, cobalt, and manganese commonly found in lithium-ion cathodes, reducing mining and disposal impacts.
The company is also pursuing lithium metal battery chemistries to further boost energy density and performance, complementing their work in lithium-sulfur technology. Their semi-solid-state design with low-flammability electrolyte materials enhances safety.
Recent Projects
In the past year, Li-S Energy has made progress in demonstrating its battery capabilities. The company successfully integrated its cells into UAV flight battery packs, which were tested in actual drone flights. A notable collaboration is with Kea Aerospace, announced in March 2025, to co-develop lithium sulfur battery packs for high-altitude UAVs. This partnership aims to enable months-long continuous flight capabilities with upcoming ground and flight testing.
Li-S Energy also advanced its Pegasus I drone program, designed for extended flight using their battery technology. Production scale-up efforts included commissioning Phase 3 and Phase 3S production lines for large-format and wearable/unmanned systems cells, both now operational and undergoing performance evaluations.
Investors
Li-S Energy has received support from several key investors. PPK Group Limited is a major shareholder, holding 39.24% of shares. Deakin University Endowment Fund is another significant investor with 13.02% ownership, reflecting the company’s collaborative origins. Additionally, BNNT Technology Ltd. holds 4.69% of shares. Other notable investors include Yjk Pty Ltd. and Baozhi Yu. The company also maintains a minor investment in Zeta Energy LLC, a US-based battery technology firm. Historic capital raises, such as AU$20 million from sophisticated investors in April 2021 and an oversubscribed IPO in September 2021 raising approximately AU$34 million, have contributed to its financial foundation.
Business Details
Location: Brisbane, Australia
Website: https://www.lis.energy/
LinkedIn: https://www.linkedin.com/company/65630387
