Gelion makes breakthrough with Gen 3 sulfur cathode tech
By Josh White
Date: Wednesday 12 Feb 2025
(Sharecast News) - Gelion announced a key breakthrough in its Gen 3 sulfur cathode technology on Wednesday, confirming its viability for use in full solid-state battery applications.
The AIM-traded firm said independent testing by a European research institute demonstrated that its proprietary cathode material could be paired with solid-state electrolytes, marking a significant step towards commercialising sulfur-based batteries.
It said the technology was designed to address key challenges in battery development, including preventing polysulfide shuttling for improved longevity, eliminating liquid electrolytes to enhance safety, and increasing energy density for lighter batteries.
Gelion said its sulfur cathode material, already used in its high-performance liquid electrolyte lithium-sulfur batteries, achieved an energy density of 402 watt-hours per kilogram.
By extending the applicability of its cathode technology across liquid, semi-solid-state, and solid-state battery architectures, Gelion said it was aiming to position itself as a competitive alternative to traditional lithium-ion chemistries such as NMC and LFP.
The company said it saw potential applications in electric vehicles, stationary storage, and aerospace, where weight reduction and cost efficiency were critical.
Gelion said it was pursuing a materials-focused business model, and was planning to scale up cathode manufacturing through partnerships with established battery producers.
While it was continuing to optimise its Gen 3 cathode for liquid and semi-solid-state batteries targeting near-term aerospace and defence markets, the company said it intended to collaborate with solid-state battery developers to integrate its technology into long-term, high-energy applications.
"I am very pleased with the balanced yet ambitious approach our team is taking in advancing our sulfur cathode technology," said chief executive officer John Wood.
"Sulfur has the potential to be a game changer for battery technology and the energy transition."
Wood said that a successful energy transition requires two elements - technology that provides a full solution to market needs, and the commercial development of key supply chain relationships.
"This progress allows Gelion to confidently demonstrate to our partners that our leading sulfur battery technology will be able to support their own objectives across the full scope as the industry progresses toward liquid, semi-solid-state, and full-solid-state outcomes."
At 0952 GMT, shares in Gelion were up 9.17% at 13.1p.
Reporting by Josh White for Sharecast.com.
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