ALUMINUM-SULFUR COMPOSITE MATERIAL, PREPARATION METHOD, AND POSITIVE ELECTRODE MATERIAL FOR LITHIUM-SULFUR BATTERY

摘要

An aluminum-sulfur composite material. The aluminum-sulfur composite material comprises a hollow aluminum ball shell and elemental sulfur encapsulated in the hollow aluminum ball shell; pores are distributed on the hollow aluminum ball shell. The aluminum-sulfur composite material has a composite type microstructure with elemental sulfur encapsulated in a porous hollow aluminum ball shell; a positive electrode of a lithium-sulfur battery is prepared by using the composite material having said structure, and thus the sulfur utilization rate of the battery can be increased, and the rate performance and the cycle performance can be improved.