The electrochemical synthesis of cyclic carbonates from CO₂ with epoxides was carried out in an undivided cell using Al as a sacrificial anode and Bu₄NBr/DMF as the electrolyte at room temperature. The influence of some key factors (such as kinds of the electrode materials, supporting electrolyte, CO₂ pressure and solvents) on the results of the electrosynthesis was investigated. The cyclic carbonates could be obtained in moderate to high yields of 65～98% in 0.05 mol•L^－1 Bu₄NBr/DMF electrolyte solution under 4 MPa CO₂ with a platinum cathode.

Key words: electrochemical, cyclic carbonate, Bu₄NBr, carbon dioxide