Synthesis of CeO2@S Composite as Cathode Material for in Lithium-Sulfur Batteries

Rare metal oxides have many appealing characteristics and performance in many aspects, such as photo catalysis and energy storage. In recent decades, traditional metal oxides have been identified as promising cathode host materials for Li-S batteries. The metal oxides could provide chemical adsorption for the soluble polysulfide in the electrolyte. However, there are few works about the employment of rare metal oxides in the lithium-sulfurcould batteries. In our work, metal oxide CeO2 frameworks are prepared and designed as perfect host materials for the sublimed sulfur. Its unique 3D interconnected frameworks could provide sufficient space for the storage of polysulfide. In addition, the 3D structure is beneficial for the rapid electrons transport.