Investigation of wet-milled graphene nanosheets with sulfur doping for lithium-ion battery

In this work, sulfur-doped graphene nanosheets (SGNS) were fabricated by wet ball milling pristine graphite with carbon disulfide (CS 2 ). With the presence of liquid CS 2 , pristine graphite was easily infiltrated and exfoliated to graphene nanosheets, and sulfur atom was successfully doped onto the surface of graphene nanosheets. The as-prepared SGNS with sulfur doping content (12.49 wt.%) showed higher reversible specific capacity (588.2 mAh g −1 and 266.2 mAh g −1 ) than the commercial graphite (240 mAh g −1 and 69.7 mAh g −1 ) at current densities of 100 and 1000 mA g −1 , respectively. This method described in this study can provide a simple and low-cost strategy for the preparation of SGNS as a promising anode material for lithium-ion batteries.