REG - Gelion PLC - Exceptional Technical Results

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RNS Number : 8159Y  Gelion PLC  31 March 2026

 

31 March 2026

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

 

Exceptional Technical Results and Expansion of Testing with TDK Corporation

Gelion (AIM: GELN), the sulfur battery company, is delighted to announce
exceptional performance results from its Nano-Encapsulated Sulfur (NES™)
Cathode Active Material (CAM) platform leading to an expansion in the
Collaboration Agreement scope with TDK Corporation ("TDK"). These developments
further validate the performance potential and commercial readiness of
Gelion's cathode technology.

Gelion is seeking to replace the strategic minerals in current Lithium-ion
battery cathodes with Gelion's NES™ that are low cost and can be dropped
into existing global manufacturing lines. Gelion's NES™ is made from sulfur
which is abundantly available and free from supply chain constraints.

Highlights

· Lithium-Metal Pouch Cell Results: TDK has successfully
fabricated two-layer lithium-metal pouch
cells incorporating Gelion's NES™ CAM. These cells are currently under
test, with results so far revealing leading cycle-stability within the
lithium-sulfur sector.

·   Exceptional cycling with externally lithiated NES™ Graphitic Anode:
Full cell testing using industry standard graphitic anodes (dominant anode in
today's Li-ion batteries) and Gelion's lithiated NES™ cathode as the sole
lithium reservoir (cathode provides all the energy carrying lithium) achieved
exceptional stability at 1C charge/discharge, surpassing 750 cycles (ongoing).

·    Successful NES™ Cathode lithiation: Gelion has developed protocols
for the successful lithiation of NES™ cathode. Our next steps will be toward
adapting our protocols to align with existing industry capabilities toward the
goal of enabling scalable, cost-effective manufacturing.

·  Expanded Collaboration with TDK: TDK and Gelion will expand the scope of
their collaboration to include commercially applied anode-types. Cells that
pair Gelion's NES(TM) sulfur cathode with graphitic anodes will be a key focus
of this initiative.

Li-Metal Pouch Cell Testing

The second phase of testing for double-layer lithium-metal pouch cells with
TDK has delivered strong results. The cells have reached extended cycle
numbers and retain excellent capacity under continuous testing, proving the
robustness of the NES™ platform in commercially relevant cell formats. This
technology is aimed at the drones and niche applications, and these results
confirm the potential use case.

Exceptional cycling result using Graphitic Anode

Recent testing pairing the NES™ CAM with graphitic anodes (the dominant
anode in Li-ion batteries today) yielded exceptional results. In these
full-cell tests, Gelion's lithiated NES™ CAM served as the sole reservoir of
lithium, with the associated full cells achieving highly consistent charge and
discharge characteristics over 750 cycles using 100% depth of discharge at a
1C charge/discharge rate (aggressive for cycle-life testing).

This is a critical milestone targeting drones and electrical vehicle markets
and demonstrates the potential of Gelion's NES(TM) CAM for integration as a
"drop-in" into established cell architectures, lithium-ion markets and
gigafactory manufacture.

 

Successful lithiation

Operationally, the Company has successfully developed protocols for the
lithiation of NES™ cathode. This breakthrough is a critical precursor to
industrial-scale manufacturing, making mass production easier and cheaper.

Expanded Collaboration with TDK

Following these successful results, Gelion and TDK have agreed to expand their
testing protocols. The next phase will take the NES™ cathode beyond
lithium-metal anodes.

John Wood, CEO of Gelion, said: "I recently visited TDK in Tokyo for an
exchange that bridged members of our own team and the team working with our
materials at TDK.  When teams like this work together in tight collaboration,
magic can happen. We are still learning the full scope of potential of
Gelion's NES™ material, but these results present strong signposts for our
vision of Sulfur emerging as a high performance, low cost cathode alternative
alongside the leading incumbents, NMC and LFP."

For more information, please visit Next-Generation Sulfur Battery Technologies
| Gelion (https://gelion.com/) or contact:

 

 Gelion plc                                                     via Tavistock
 John Wood, CEO

Amit Gupta, CFO

 Strand Hanson Limited (Nominated and Financial Adviser)        +44 (0) 20 7409 3494

Christopher Raggett / Rob Patrick / Harry Marshall
 Oberon Capital (Joint Broker)                                  +44 (0) 20 3179 5300
 Nick Lovering / Mike Seabrook / Adam Pollock

 Allenby Capital Limited (Joint Broker)                         +44 (0) 20 3328 5656

 Jos Pinnington / Lauren Wright (Sales and Corporate Broking)

 Alex Brearley / Ashur Joseph (Corporate Finance)

 Tavistock (Financial & Corporate PR)                           +44 20 7920 3150

Simon Hudson / Nick Elwes / Saskia Sizen                      gelion@tavistock.co.uk

Market Abuse Regulation

 

This announcement contains inside information for the purposes of Article 7 of
EU Regulation No. 596/2014, which forms part of United Kingdom domestic law by
virtue of the European Union (Withdrawal) Act 2018, as amended.

 

About Gelion

Gelion plc, the sulfur battery company is developing next‑generation battery
technologies that aim to accelerate the clean energy transition by delivering
sustainable, high‑performance, cost‑effective energy storage solutions.
Central to its strategy is proprietary sulfur‑based cathode active material
(CAM) technology, which uses nanoconfinement to control sulfur behaviour in
lithium‑sulfur and room‑temperature sodium‑sulfur battery architectures
Nano-Encapsulated Sulfur (NES™), addressing historical performance
limitations and enabling compatibility with standard lithium‑ion and
sodium‑ion manufacturing infrastructure. The NES™ material is being
developed with the goal of having "drop in" capability in place of alternate
cathode materials to support scalable production in existing gigafactories and
targets critical benchmarks for energy density and power performance, with
applications across electric mobility, e‑aviation, grid and stationary
storage. Gelion works with Tier One industrial partners to commercialise its
technology and deliver integrated energy storage systems that support global
decarbonisation goals.

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