Solidion Technology begins trading on NASDAQ, aims to advance eVTOL aircraft with graphene-enhanced batteries

Solidion Technology, an advanced battery technology solutions developer, began trading on NASDAQ (ticker symbol “STI”) on February 5, 2024. Solidion is the merged entity between Honeycomb Battery Company (HBC, Dayton, Ohio) and Nubia Brand International Co., a special purpose acquisition company (SPAC), based in Dallas, Texas.

Some see electric vertical takeoff and landing (eVTOL) aircraft as the next urban transportation technology breakthrough. At the heart of an eVTOL aircraft is a heavy battery pack. The amount of energy that can be stored in a battery pack with a reduced mass must be significantly increased before the eVTOL industry can literally take off. It is estimated that eVTOL aircraft needs a battery system with a gravimetric energy density > 400 Wh/kg. For an air taxi to carry more passengers, a battery cell energy density higher than 450 or even 500 Wh/kg will be required.


Lithium-sulfur (Li-S) batteries seem like a practical energy storage solution capable of delivering such a high energy density (theoretically >600 Wh/kg) to power the transition to electric air mobility.

The Solidion technical team began development of Li-S batteries in 2010. Solidion has built extensive IP (including 100+ US patents and numerous international patents on Li-S batteries) and essential technologies for fully commercializing these ultra-high energy batteries. These technologies, covering protected lithium metal anode, quasi-solid or solid-state electrolyte and separator, graphene-enabled cathode, and innovative battery cell-to-pack designs, position Solidion to be a global leader in high-energy batteries for air mobility.

The same solid-state lithium-sulfur batteries have the potential to revolutionize the ground transportation with their inherent safety and doubled the range on a single charge, given the same battery weight.

Posted: Mar 07,2024 by Roni Peleg