Electrosynthesis of n-propanol from CO has been limited by poor selectivity and low product concentration. Here a Sn–Cu catalyst/carbon/ionomer heterojunction is prepared where the adjacent atomic active sites favour the coupling of C1 and C2 intermediates to C3 product with 47% Faradaic efficiency and the reversal of electro-osmotic drag concentrates the product to 30 wt%.
- Yuanjun Chen
- Xinyue Wang
- Edward H. Sargent
