Sustainable and Safe Sodium-Ion Battery Solutions for the Future of Naval and Military Aviation

The U.S. Navy requires safer, more resilient energy storage systems for aviation platforms. Lithium-ion batteries pose safety risks due to thermal runaway and rely on geopolitically sensitive materials like lithium, cobalt, and nickel. They also perform poorly in extreme temperatures.Coulomb Technology proposes a sodium-ion (Na-ion) battery solution using abundant, domestically sourced materials to overcome these limitations. The system is built around a NASICON-based cathode and a proprietary sodium-based anode, delivering >120 Wh/kg energy density, >6,000 cycles, and reliable operation down to -40∞C. The 28V battery pack, made from U.S.-manufactured 3V 10Ah cylindrical cells, includes a smart BMS with thermal and overcurrent protection. It will be designed to meet adapted Navy specs from MIL-PRF-29595 and S9310-AQ-SAF-010.Phase I will focus on feasibility analysis, preliminary design, and safety standard adaptation to de-risk key technical areas and prepare for prototyping. Coulombís solution supports Navy battery commonality goals and transition to aviation and ground platforms. With strong support from Lockheed Martin and access to ORNL resources, Coulomb aims to deliver a scalable, safe, and cost-effective alternative to Li-ion for defense and commercial applications.