Inside-mode indium oxide/carbon nanotubes for efficient carbon dioxide electroreduction by suppressing hydrogen evolution.

The hydrogen evolution reaction is a huge challenge for CO2 electroreduction. Herein, an inside-mode indium oxide/carbon nanotube compound (MWCNTs@In2O3) is developed to maximize the catalytic effect and suppress hydrogen evolution, its HCOOH selectivity can reach up to 92.2% at -16.