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The Express Gazette
Friday, October 23, 2026

Sulfur Battery Technology Gains Investor Interest for Defense Applications

A London-based company's sulfur cathode technology has attracted investor attention due to its potential to replace scarce, costly minerals in defense and aerospace applications.

Business & Markets • 2 hours ago
Sulfur Battery Technology Gains Investor Interest for Defense Applications

Gelion, a battery technology firm, is developing a battery that utilizes sulfur, an abundant and inexpensive material, as a cathode component. This innovation aims to address the reliance on critical minerals, which are often costly to mine and difficult to source, for current battery technologies.

Investor confidence in Gelion's sulfur-based cathode material surged after the National Laboratory of the Rockies, a U.S. Department of Energy research center, successfully replicated the company's findings. The lab constructed its own battery cells using Gelion's material, which maintained 92 percent of their capacity even when subjected to a 20-fold increase in charging speed. Gelion intends to supply its sulfur cathode material to other battery manufacturers, who will require independent verification of its performance.

Larger-scale prototypes are the next challenge, as initial tests were conducted using coin cells, the smallest available battery format. Gelion's technology is designed to integrate into existing manufacturing facilities, potentially reducing the need for costly retooling by producers.

In broader market news, growth stocks have experienced a difficult week, with the AIM All-Share index declining by 3 percent. This downturn is attributed to a sell-off in U.S. technology stocks and global political uncertainties, which have led to a retreat from riskier market assets.

Other companies saw significant gains. Pulsar Helium's shares increased by 29 percent following a presentation and expert commentary. Ixico, a specialist in brain imaging, advanced 26 percent after revising its revenue expectations upward. The company also secured a £1.5 million contract to provide its expertise for an Alzheimer's trial.

Metals One had a notable week, signing a term sheet to acquire full ownership of Lions Bay Resources. This acquisition would bring the Barbrook Gold Mine in South Africa and the KC Energy Cogeneration Power Plant in South Africa under Metals One's control. A valuation by CREST Corporate Services suggests the combined entity could be worth nearly £107 million, or 6.1 pence per share, a significant increase from its current trading price.

Conversely, two companies that raised substantial capital experienced share price drops. Cornish Metals, down 26 percent, raised £135 million for its South Crofty tin project, with a notable £11.2 million contribution from Glencore. Invinity Energy Systems raised £35 million, but its shares ended the week 36 percent lower, despite investor confidence in its product development potential.

In the realm of green energy, hydrogen technology continues to be a focus. Hydrogen Solutions, a London-based company, has developed a dual-mode solid oxide device called the H2 HotBox. This device can produce green hydrogen from water and renewable electricity and then reverse its function to generate clean power from stored hydrogen, claiming high efficiency.

The company aims to follow the trajectory of successful British hydrogen firms like ITM Power and Ceres Power. Broker CREST Corporate Broking estimates that Hydrogen Solutions' technology could offer a 366 percent upside on the current share price.


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