“The electrolyte’s high ionic conductivity contributes to reduced internal cell resistance and enhanced rate capability, even under demanding temperature conditions,” according to EAS. “The product [is] scheduled to be released no later than March 2026.”
Under a project called Headline, the two companies developed the cell, called UHP601300 LFP 22, with financial support from Germany’s federal ministry of research, technology and space.
Its specification includes 22Ah capacity, 2,550W/kg (880A, 40C) continuous discharge and 3,760W/kg (1,320A, 60C) for a 2s pulse.
Claimed room temperature cycle life is 2,400 to 80% initial capacity, with 100% cycle depth and 110A (5C) for both charge and discharge – one cycle taking 24 minutes, said EAS.
“This performance was demonstrated by testing with the charge and discharge current set at 110A, which corresponds to a full charge and discharge cycle in 24 minutes,” the company said. “The reduced internal resistance of the new cell also results in lower heat generation during cycling and improved energy efficiency compared to cells using conventional electrolytes.”
Asahi Kasei has been developing li-ion cells for over three decades, with researcher Akira Yoshino identifying acetonitrile as a promising ingredient in 2010, leading to a proof-of-concept battery in June last year.
In particular, it designed the EAS electrolyte for marine, railway and construction machinery applications.
EAS emerged from Gaia Akkumulatorenwerke, and since June 2017, it has been part of Monbat Group. It makes batteries in Nordhausen.
Asahi Kasei was founded in 1922 as an ammonia and cellulose fibre business. It now has over 50,000 employees worldwide.
