Gelion has announced significant advancements in its sulfur battery technology, demonstrating improved performance in recent evaluations. These developments target commercial applications in areas such as drones, transportation, and grid and remote energy storage systems.
Building on a partnership with the Max Planck Institute of Colloids and Interfaces (MPI) announced in March 2025, Gelion has successfully integrated MPI’s technology into sodium-sulfur coin cells, which are the industry standard for battery testing. The initial test results highlight several key achievements:
- Power Capability: The batteries demonstrated robust capacity retention even under extreme charge and discharge rates, supporting six-minute charge and discharge cycles.
- Longevity: Tests confirmed that the batteries could endure over 1,000 charge and discharge cycles while maintaining industry-standard capacity retention during one-hour charge/discharge cycles.
- Industrially relevant results: These tests represent a progression from laboratory material testing conditions to the industrially relevant coin cell development platform*.
These outcomes represent a transition from laboratory material testing to an industrially relevant coin cell development platform. The established pathway from coin cells to larger commercial cells will utilize the combined technologies from MPI and Gelion, adapting them to meet standard large-format cell parameters and component requirements.
Historically, sulfur batteries have been limited by challenges such as short cycle life and low power output, restricting their use to niche markets. Gelion’s recent results address these issues, enhancing the potential for sulfur batteries to achieve a strong product-market fit and facilitate commercial adoption.
- Enhanced Power Capability: The ability to rapidly charge and discharge is critical for applications in transportation and aerial drones, meeting the high power demands required for quick acceleration and drone operations.
- Extended Cycle Life: Achieving a cycle life exceeding 1,000 cycles aligns with the standards set by the United States Advanced Battery Consortium (USABC) for transportation and energy storage applications.
In addition to technological advancements, Gelion is actively pursuing strategic collaborations to accelerate the commercialization of its sulfur battery solutions. The company has entered into a Materials Testing Agreement (MTA) with a tier-one battery manufacturer, with further details to be announced shortly. This agreement allows Gelion to supply materials for performance testing while protecting its intellectual property and confidentiality. The partnership underscores industry recognition of Gelion’s innovative technology and marks a significant step toward large-scale adoption of its sulfur battery products.
Source: Gelion
