The development of Lithium-Sulphur (Li-S) batteries started in the 1960s because their chemistry promised high theoretical energy density using cheap sulfur as a cathode material, where an energy density of more than 500Wh/kg was theoretically possible. However, the initial technologies were wrought with problems related to polysulphides passivating the lithium anode and a lack of sulfur conductivity. Battery developers used diverse strategies to overcome these problems and other challenges, but few produced countable results and prospects for commercialization.
The NTNU Li-S battery aims to overcome the critical issue of short lifespan that restricts the wider adoption of Li-S technology. By integrating two distinct nanomaterials derived from metal-organic frameworks, the cathode material and the separator are significantly enhanced. Laboratory tests indicate that these improvements result in a battery with exceptional longevity.
The research results stem from years of excellent research and innovation conducted in the Membrane research group at the Department of Chemical Engineering at NTNU. The project identifies three key market segments where the combination of low weight and high energy density makes Li-S batteries particularly advantageous. A detailed commercialization strategy has been developed, outlining technical requirements and industry benchmarks needed for market entry, informed by market analyses and industry discussions.
Lastly, we have established a national patent strategy to protect the core innovations. Next steps include technology verification, alignment with industry expectations, and securing patents in strategic areas to support commercialization and ensure a competitive edge.
The project achieved several key outcomes, starting with significantly reducing commercialization risks by identifying a suitable initial market and defining industry requirements. We now have a clear focus for further battery development.
Additionally, we developed and assessed various commercialization strategies, ultimately identifying the most viable approach before committing to it. This strategic foresight enhances the likelihood of successful market entry.
Lastly, the submission of international patent application, combined with the creation of a robust national patent strategy, ensures comprehensive intellectual property protection. This solidifies the technology's competitive position and provides a critical asset for successful commercialization.