▎ 摘　　要

The commercialization of sulfur batteries is hindered by a few inherent drawbacks. In this study, crumpled N-doped graphene anchored with cobalt (Co-NCG) was fabricated in one pot via a sample solvothermal method and applied to lithium-sulfur (Li-S) batteries. The crumpled structure not only gives graphene a large specific surface area and abundant pores, but also endows graphene superb stability by preventing its restacking; these features are beneficial for loading and efficient utilization of sulfur. The lone pair electrons on the nitrogen atom underwent strong chemical interactions with Li ions, which lent the Co-NCG/S material the ability to chemically immobilize polysulfide species. Cobalt acts as an electrocatalyst in the battery and kinetically accelerates sulfur redox reactions. As a result of these multifunctional arrangements, the Co-NCG/S cathode showed excellent capacity retention and reaction kinetics and high sulfur loading capacity.