24M Delivers First Commercial Scale, High Energy Density SemiSolid Lithium-ion Batteries

Achieved Densities Greater than 280 Wh/kg in Cells Delivered to
Industrial Partner

CAMBRIDGE, Mass.–(BUSINESS WIRE)–24M
announced today it has developed and delivered commercially viable, high
energy density lithium-ion cells. Using its novel SemiSolid lithium-ion
battery design in its pilot facility, 24M achieved energy densities
exceeding 250 watt-hours per kilogram (Wh/kg), the current
state-of-the-art industry benchmark for EV applications. These
deliveries represent a significant milestone in the 24M mission to scale
its unique, capital-efficient, low-cost approach to advanced lithium-ion
battery manufacturing.

The development of the high energy density nickel manganese cobalt (NMC)
cells is part of a $7M three-year contract awarded to 24M in 2016 by the
United States Advanced Battery Consortium LLC in cooperation with the U.S.
Department of Energy
. The program is chartered with developing
electrochemical energy storage technologies that support the
commercialization of hybrid, plug-in hybrid, electric and fuel cell
vehicles. To achieve the final USABC 2020 density target of 350 Wh/kg by
the end of 2019, 24M has developed a multi-faceted, lab-proven approach
that includes a novel use of silicon for high energy density anodes.

24M also delivered similar NMC cells with energy densities above 280
Wh/kg to an industrial partner. With these cells, the higher energy
densities were achieved by optimizing 24M’s SemiSolid electrode
technology, which eliminates the use of a pore-clogging binder, enabling
higher active material densities than can be achieved with conventional
electrodes. The demonstration of this technology is a major milestone on
the 24M roadmap to achieving even higher energy densities (>400 Wh/kg)
using its capital-efficient manufacturing process.

“It’s very gratifying to see science translated from the lab into
innovative new products as 24M has done by developing and delivering
these high energy density cells,” said Naoki Ota, CTO of 24M. “Moreover,
we were able to leverage our novel electrode, cell and manufacturing
approach to exceed 280 Wh/kg, a significant step towards delivering
low-cost lithium-ion cells with industry-leading performance to the EV
market.”

About 24M
24M answers the world’s need for affordable energy
storage by enabling a new, more cost-effective solution–SemiSolid
lithium-ion technology. By re-inventing the design of the battery cell
as well as the manufacturing method, 24M solves the critical, decades-
old challenge associated with the world’s preferred energy storage
chemistry: reducing its high cost while improving its performance.
Founded and led by some of the battery industry’s foremost inventors,
scientists and entrepreneurs, 24M is headquartered in Cambridge, Mass.
For more information, please visit www.24-m.com.

Contacts

Stephanie Malkus for 24M
smalkus@tieronepr.com
314-920-6125

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