Fig. 1: Design conception.
From: Dual spillover of carbon monoxide and hydrogen initiates tandem urea electrosynthesis

a Schematic diagram of the conventional design conception for tandem urea electrosynthesis12,18. b Schematic diagram of our design conception for tandem urea electrosynthesis through dual CO* and H* spillover over the PdHx/Cu catalysts. The energy barrier values are based on the previous results20,21,23,24.