REG - Gelion PLC - GEN 3 Lithium-Sulfur energy density milestone

GelionAnnouncement

04/09/2024 07:00

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RNS Number : 8561C  Gelion PLC  04 September 2024

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 04 September 2024

Gelion plc

("Gelion" or the "Company" or the "Group")

 

GEN 3 Lithium-Sulfur delivers energy density above 400Wh/kg

 

Milestone underscores technological viability of Li-S battery technology for
lightweight energy storage

 

Gelion (AIM: GELN), the Anglo-Australian battery innovator, has achieved a
significant milestone in the development of its Next Generation ("GEN 3")
Lithium-Sulfur (Li-S) battery technology.

As predicted in the announcement on 15 August 2024, Gelion has now
successfully achieved the energy density milestone of 402 Wh/Kg in a 12 Ah
cell comprised of its GEN 3 semi-solid-state (see glossary) Li-S technology
(see below for explanation of GEN 3 and semi-solid-state). The achieved energy
density is 60-70% higher than current lithium-ion batteries (approximately
200-250 Wh/kg), meaning a single Gelion GEN 3 Li-S cell is over 60% lighter
than a typical lithium-ion battery of the same energy.

This achievement demonstrates significant progress in the development of
Gelion's innovative GEN 3 technology, which:

 ·             exhibits high energy density
 ·             avoids reactive additives
 ·             uses a cathode that is prepared from commercially available materials and
 ·             fabricated using a water-based (non-toxic) low energy (room temperature)
               self-assembly process, that can be adapted to existing gigafactory
               manufacturing equipment.

John Wood, CEO of Gelion commented on the development: "We are thrilled to
deliver on the expectation set out in our August update that our GEN 3
technology would deliver on the energy density milestone of 400 Wh/kg. This is
significant and provides compelling evidence that our innovative GEN 3
approach to Li-S batteries has the potential to not only engineer batteries
with excellent safety capabilities coupled with economical and sustainable
manufacture, but also provides the exceptional energy for weight performance
that make Li-S batteries such an attractive technology."

 

Gelion's Li-S technology development pathway

 

CONTACTS

 Gelion plc                                                        via Alma

 John Wood, CEO

 Amit Gupta, CFO

 Thomas Maschmeyer, Founder and Principal Technology Advisor

 Cavendish Capital Markets Limited (Nominated Adviser and Broker)  +44 207 220 0500
 Corporate Finance

 Neil McDonald; Seamus Fricker; Fergus Sullivan

 Sales

 Leif Powis

 Alma Strategic Communications (Financial PR Adviser)              +44 20 3405 0205

 Justine James; Hannah Campbell; Will Ellis Hancock                gelion@almastrategic.com

 

Glossary

 Ah                                                              Ampere hours. A measure of capacity stored in the cell. The larger the number
                                                                 the higher the capacity.
 Energy density (Wh/kg)                                          The ratio of energy stored per unit weight i.e. Watt-hours per kilogram. The
                                                                 higher the number the lighter the battery.
 Pouch cell                                                      An industry standard format of a battery which comprises a flat pouch-shaped
                                                                 design with a multi-layered laminate structure.
 Solid-to-solid conversion                                       A low or polysulfide-free conversion of sulfur within the cathode.
                                                                 Polysulfides are a dissolved form of sulfur that is corrosive and reduces
                                                                 cycle life in traditional lithium-sulfur batteries. Solid-to-solid conversion
                                                                 helps mitigate the formation of these polysulfides.
 Semi-solid-state as a route to increased longevity/cycle life:  GEN 3 employs a semi-solid-state mechanism, maintaining the sulfur-based
                                                                 cathode materials in the cathode, preventing their diffusion into the
                                                                 electrolyte and diminishing associated battery degradation caused by reactive
                                                                 polysulfides. This approach mitigates the major degradation factor associated
                                                                 with conventional Li-S technology.

 

About Gelion

Gelion ("gel: ion") is a global energy storage innovator, supporting the
transition to a more sustainable economy by commercialising two globally
important next generation technologies: Lithium-Sulfur (Li-S) and Zinc-based
(Zn) hybrid cells to electrify mobile and stationary applications. Gelion plc
(the Group) is listed on the London Stock Exchange's AIM market and wholly
owns Australia based Gelion Technologies Pty Ltd. Gelion is designing and
delivering innovative battery technology to enable that transition and return
value for its customers and investors.

 

Lithium Sulfur

Gelion's effort is directed at the potential for the Li-S chemistry to deliver
double the gravimetric energy density of standard Lithium-ion chemistries
whilst concurrently reducing cost and increasing safety, targeting the EV and
e-aviation market, helping to make global transport, energy consumption and
storage more sustainable.

 

Gelion is developing a GEN 3 Lithium Sulfur cell product for its high energy
density sulfur cathode at its expanded R&D facilities in Australia and UK,
enabling it to integrate with a variety of anodes ranging from graphite to
silicon to lithium metal, depending on the targeted application.

 

Gelion's GEN 3 cell is unlocking the potential of sulfur batteries for a wide
range of global mobile applications including electrical
vertical-take-off-and-landing (eVTOL), drone markets, electric vehicles (EVs)
and stationary energy storage (ESS).

 

Background on GEN 3 Lithium Sulfur

 

·       High energy density - Energy density greater than 400 Wh/kg,
when using a 10+ Ah pouch cell.

·       Semi-solid-state as a route to increased longevity/cycle life:
GEN 3 employs a semi-solid-state mechanism, maintaining the sulfur-based
cathode materials in the cathode, preventing their diffusion into the
electrolyte and diminishing associated battery degradation caused by reactive
polysulfides. This approach mitigates the major degradation factor associated
with conventional Li-S technology.

·       Increased sulfur utilisation: GEN 3 demonstrates the full
theoretical capacity of sulfur, i.e. a much higher sulfur utilisation than
found in conventional Li-S approaches.

·       Simplified supply chain: The innovative cathode is produced by
mixing commercially available materials with abundant sulfur using a
low-energy, room-temperature process, with potential to eliminate the need for
pre-fabrication of the sulfur composite (sulfur composite is related to
cathode active material in conventional lithium-ion batteries), streamlining
the associated supply chain and production process and enabling localised
manufacturing.

·       Environmental and economic benefits: The water-based,
standard-atmosphere cathode production process eliminates the need for toxic
solvents, leading to significant cost savings and enhanced manufacturability.

GEN 3 uses the extensive network of Li-S technologies developed within Gelion
and contained in the patents acquired from Johnson Matthey in March 2023.

Zinc

Gelion is adapting its zinc technology to comprise an alternate cathode
technology, a zinc hybrid cell to develop complementary next-generation
batteries for the lead-acid eco-system. Early testing indicates that this
solution has the potential to maintain good energy density levels with
enhanced cost and safety aspects. Once fully developed, Gelion intends for its
zinc technology to provide a durable and sustainable market extension within
the ecosystem that supports lead-acid batteries.

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