▎ 摘　　要

In this article, multi-walled-carbon nanotube/graphene hybrid (MWCNT-G) was prepared by directly adding graphene powder to the surface functionalized multi-walled carbon nanotubes (MWCNT) dispersion. The morphology of the MWCNT-G was observed using SEM and TEM. Observation found the MWCNT-G represented a network morphology, which is beneficial for the electrochemical reaction. Therefore, the MWCNY-G was used for commercial electrode surface modification. The electrochemical performance of the modified electrode was tested by electrochemical determination of nicotine.