▎ 摘　　要

Electrochemical CO2 reduction reaction (CO2RR) is eliciting considerable attention in relation to the carbon cycle and carbon neutrality. As for the practical application of CO2RR, the electrocatalyst is a crucial factor, but, even so, designing and synthesizing an excellent catalyst remains a significant challenge. In this paper, the coordination compound of Ni ions and dimethylglyoxime (DMG) was employed as a precursor to modify reduced graphene oxide (rGO) for CO2RR. The textural properties and chemical bonds of as-obtained rGO, N-C-rGO, Ni-rGO, Ni-N-C, and Ni-N-C-rGO materials were investigated in detail, and the role of Ni, N-C, and rGO in the CO2RR were researched and confirmed. Among all the catalysts, the Ni-N-C-rGO showed the optimal catalytic activity and selectivity with a high current density of 10 mA cm(-2) and FE(CO)% of 85% at -0.87 V vs. RHE. In addition, there was no obvious decrease in activity for 10 h. Therefore, the Ni-N-C-rGO is a promising catalyst for CO2RR to CO.