The Department of Defense, specifically the U.S. Navy and Marine Corps, is seeking innovative solutions for the development of a safe and robust sodium-ion (Na-ion) battery for use in naval aviation. The objective is to design a Na-ion battery that meets the stringent environmental, operational, and storage requirements of naval aviation systems while providing enhanced safety and leveraging domestic materials supply chains. This initiative is crucial as it aims to replace existing lead-acid and lithium-ion batteries, which pose safety and supply chain risks, with a more efficient and safer alternative. The solicitation is set to open on April 23, 2025, with applications due by May 21, 2025, and further details can be found at the provided source link.