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.”

Read the full technology update.