▎ 摘　　要

NOVELTY - An electrocatalyst material comprises copper(I) oxide (Cu2O) containing antimony, where amount of antimony is 5-30 wt.%. USE - An electrocatalyst material for electrode used in selective electrochemical reduction of carbon dioxide to carbon monoxide (claimed). ADVANTAGE - The electrocatalyst material shows higher values of faradic efficiency and selectivity in the electrochemical reduction of carbon dioxide to carbon monoxide than known materials, while using inexpensive and widely available components, i.e. copper and antimony. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) electrode comprising powder of an electrocatalyst material and conductive material deposited on a support, in a weight ratio between electrocatalyst material and conductive material of 9:1-19:1; (2) production of electrocatalyst material which involves dissolving copper(II) salt and antimony(III) salt in a solvent selected from ethanol, ethylene glycol, acetylacetone, diethylamine, ethylenediamine, oleylamine, N,N-dimethylformamide, mixtures of these solvents with each other, with water, or with aqueous solutions of D-glucose, hydrazine hydrate, amino acids, or sodium carboxymethylcellulose, to obtain a solution, heating the solution in a microwave oven at 180-230 degrees C for 1-10 minutes, separating precipitate from solution, and drying; and (3) selective electrochemical reduction of carbon dioxide (CO2) to carbon monoxide (CO), which involves using the electrode at a potential between - 0.69 V to - 1.09 V.