Gelion announced that its Sulfur Cathode Active Material (CAM) has been successfully integrated into small-scale coin cells using conventional lithium-ion and sodium-ion battery components. The tests combined the Sulfur CAM with standard carbonate-solvent electrolytes and hexafluorophosphate salts alongside familiar separators and anodes, demonstrating compatibility with established gigawatt-hour-scale manufacturing processes.
In recent experiments, Gelion incorporated its Sulfur CAM in both lithium-sulfur and sodium-sulfur coin cells. The lithium-ion configuration paired the CAM with a carbonate-based electrolyte and lithium hexafluorophosphate salt, a polyolefin separator, and a graphite anode. The sodium-ion setup used a similar electrolyte formulation with sodium hexafluorophosphate salt, a polyolefin separator, and a hard-carbon anode.
This compatibility addresses a significant industry challenge: conventional sulfur cathodes typically degrade rapidly when used with carbonate solvents and PF6-based electrolytes. Gelion’s CAM overcomes this limitation, enabling the use of mature, cost-efficient electrolytes that form stable passivation layers on graphite and hard-carbon anodes. As a result, the technology can be integrated into existing battery production lines without extensive retooling or supply-chain changes.
The development builds on technology transferred from the Max Planck Institute of Colloids and Interfaces and a cathode material scale-up completed in September 2025. Moving forward, Gelion plans to focus on refining CAM performance for specific lithium- and sodium-ion applications, increasing cathode areal capacities, and advancing prototype cell development.
According to John Wood, Gelion’s CEO, these results underscore the company’s goal of positioning Sulfur CAM alongside established cathode materials across a range of energy storage applications, from electric vehicles to grid-scale systems. The team anticipates further collaboration with industrial partners to align technology and commercial targets.
Source: Gelion News
