LAUSR

Electrochemical carbon dioxide reduction reaction (CO 2 RR) refers to the conversion of carbon dioxide into compounds with added value through electrolysis, it is still a great challenge to design and manufacture efficient CO 2 RR catalysts for desired products. Producing syngas via CO 2 RR is an environmentally friendly way, which can reduce CO 2 in the atmosphere and the dependence on fossil fuels. Herein, a new class of Cu/In 2 O 3 nanoparticles (NPs) with controlled phases and structures have been successfully prepared as superior electrocatalysts for CO 2 RR, where the carbon monoxide/hydrogen (CO/H 2 ) ratios in syngas on Cu/In 2 O 3 NPs/C-H 2 remain about 1:2 at a broad potentials range and the total FE of H 2 and CO always remains about 90%. Electronic structural analysis revealed that the excellent performance is attributed to the electronic interaction between amorphous In 2 O 3 and Cu. This work broadens the horizons for designing and preparing fascinating electrocatalysts for CO 2 RR.