Lionano

Factorial Energy, formerly Lionano, is a Massachusetts-based battery technology company founded in 2013. Specializing in solid-state batteries for electric vehicles and energy storage, they use nano-engineered materials to enhance safety, efficiency, and scalability. Backed by over $288 M in funding, Factorial Energy advances battery performance and cost-effectiveness.

Company Location

Country:

United States

City:

Woburn, Massachusetts

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Company Overview

Lionano, now operating as Factorial Energy, is a Massachusetts-based battery technology company founded in 2013 by PhDs, MBAs, and a Cornell University electrochemistry professor. Initially focused on nano-engineered electrode materials to improve lithium-ion battery capacity, performance, and cost, the company has since shifted to developing solid-state batteries for safer, more efficient electric vehicles and energy storage systems.

Battery Technology

Factorial Energy’s technology builds on its nano-engineered electrode materials that tripled energy capacity, quadrupled durability, reduced charging time by 66%, and cut costs by 20%. Its current focus on solid-state batteries eliminates liquid electrolytes to enhance safety and energy density, with manufacturing processes that combine advanced materials science and scalable production for applications in EV powertrains and residential energy storage.

Products

Offers nano-engineered electrode materials for lithium-ion batteries and solid-state battery systems designed for electric vehicle powertrains and residential energy storage, featuring high energy density, improved safety, and cost-effective scalable manufacturing.

Recent Projects

In 2025, collaborated with Stellantis to validate automotive-sized solid-state cells (375 Wh/kg) for demo EV fleets by 2026; shipped FEST® lithium-metal battery cells to Avidrone for drone applications; partnered with Mercedes-Benz on the Solstice™ solid-state platform; signed an MOU with LG Chem in 2024 to co-develop solid-state batteries.

Investors

Wave Equity Partners, Helios Capital Ventures, NXT Ventures: $22M Series B (2018); $17.2M venture funding (2021); $200M Series D (2022); total funding $288.2M (2023).

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