Allegro electrolyte technology granted a US patent

Australian renewables startup Allegro Energy has been granted a US patent for its cutting-edge micro-emulsion electrolyte technology. The company says that this helps solidify its position as a leader in long-duration energy storage. The milestone follows previous patent successes in Europe and several other key markets.

Allegro’s modular micro-emulsion electrolyte system is said to enable safer, more cost-effective and scalable solutions for applications ranging from grid storage to renewable energy integration. By overcoming key limitations of traditional aqueous and non-aqueous electrolytes, Allegro’s technology expands the electrochemical stability window, enhancing energy density while maintaining the affordability and safety of water-based systems.

“The US patent reinforces Allegro’s ability to deliver a truly global and transformative solution for long-duration energy storage,” said Dr Thomas Nann, CEO and co-founder of Allegro Energy. “With energy storage playing a crucial role in the renewable transition, our micro-emulsion platform ensures scalability and adaptability across a range of battery chemistries, from redox flow to advanced ion batteries.”

The key advantage of Allegro’s micro-emulsion technology is its ability to dissolve a wider range of electrochemically active species, while maintaining stability at high voltages — previously a major barrier to the adoption of aqueous electrolytes in advanced energy storage. The solution is applicable to multiple battery formats, including lithium-ion, sodium-ion, magnesium-ion and aluminium-ion batteries, as well as supercapacitors and redox flow batteries.

With this latest US patent covering all of Allegro’s intended claims, Allegro Energy is well-positioned to partner with utilities, industrial operators and battery manufacturers worldwide to drive the future of clean energy storage, and rapidly support the drive to 24/7 carbon-free energy, according to the company.