Patent 11183688 was granted and assigned to Cornell University Press on November, 2021 by the United States Patent and Trademark Office.
Provided are porous Fe3O4/sulfur composites. The composites are composed of porous Fe3O4 nanoparticles and sulfur, where the sulfur loading is 70-85% by weight based on the total weight of the composite. Also provided are batteries having cathodes containing porous FE3O4 composites of the present disclosure.