▎ 摘　　要

In this work, stearic acid (SA) was used to improve the dispersion and tribological performance of graphene oxide (GO). The results exhibited that the SA could improve the dispersion of GO in water by the typical steric hindrance effect. As water-based lubricating additives, the GO modified by SA showed good tribological performance and load-carrying capacity, which had a low coefficient of friction and no obvious wear scar even sliding under the load of 400 mN for 2 h, indicating a long lubricating life. These superior performances were ascribed to the good dispersion of SA-modified GO in water and the synergistic effect of the excellent anti-wear property of GO and the good lubricating performance of SA.