Highly selective CO2 electroreduction in an exsolution-induced flow cell using a hierarchical monolithic nano-Ag foam electrode

We developed a monolithic nano-Ag foam electrode with well-developed pores and a hierarchical nanostructure for the CO 2 RR in an FTDT cell, achieving a CO faradaic efficiency of 93% and an overall energy efficiency of 51.34% at 200 mA cm −2 .