Adden Energy, a developer of solid-state batteries, announced that its record-breaking lithium-metal batteries can now maintain extreme-fast-charging (EFC) of less than ten minutes at room temperature. Currently, no other lithium-metal batteries can reliably charge this fast, even at elevated temperatures, and room temperature is required for electric vehicles (EVs). Such EFC solves one of the biggest bottlenecks facing the widespread adoption of EVs.
“The slow charge rates of Li-ion batteries have made EVs inaccessible to too many,” said Will Fitzhugh, CEO of Adden Energy. “Over a third of Americans lack dedicated at-home parking, so the current paradigm of at-home charging just doesn’t work. Our technology makes EV charging as fast as gas, so you can recharge using public infrastructure on your lunch break or on the way home from work.”
Adden Energy’s all-solid-state pouch cell batteries (ASSB) use lithium-metal anodes and high nickel NMC cathodes, enabling energy densities up to 500+ Wh/kg. Patented innovations, including the multi-electrolyte separator and porous 3D lithium metal anode, enable the simultaneous EFC with energy densities.
In 2022, Adden Energy raised a $5.15M seed round to transition the underlying technology from academic-style pressed-powder coin cells into commercially viable pouch cells for the EV industry. Based at its laboratory in Waltham, MA, Adden Energy has successfully made this transition and passed several testing criteria for adoption by EV manufacturers. This includes both reducing the required temperature for EFC to room temperature and maintaining conventional charging rates down to below -20° C.
“The IP portfolio we’ve developed to enable extreme-fast-charging at room temperature in our lithium-metal cells covers every aspect of the battery. Our porous anode technologies allow high cathode loadings in excess of 4 mAh/cm2 and our multi-electrolyte separators completely stop dendrites from forming even at such high current densities,” explained Luhan Ye, CTO of Adden Energy.
Filed Under: Batteries, Technology News