▎ 摘　　要

NOVELTY - Preparation of zinc-doped graphene-type catalyst, involves adding urea, a zinc source, and citric acid to water, stir-mixing, drying to obtain a precursor, and carbonizing the precursor at high temperature in an inert atmosphere, in two stages of 500-600 degrees C and 900-1100 degrees C. USE - Preparation of zinc-doped graphene-type catalyst for electrocatalytic reduction of nitrogen (all claimed). ADVANTAGE - The method enables simple preparation of zinc-doped graphene-type catalyst by loading metal with single atom or small cluster shape on graphene-type material. The obtained catalyst has excellent nitrogen reduction efficiency and stability.