Table 1 FEs of the eCO2RR products, average current density (Javg) and average CO2 detected in gas outlet using a free CO2, MEA−CO2 and AMP−CO2 with a Cu or a Pb WE
Entry | Amine | WE | Javg (mA cm−2) | CO2 in gasoutlet (103, ppm) | FE (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gaseous products | Liquid products | ||||||||||||
H2 | CH4 | CO | C2H4 | C2H6 | C3H6 | Oxalic acid | Glycolic acid | Formic acid | |||||
1 | – (CO2) | Cu | −0.8 | 225 | 26.2 (±15.21) | – | 7.0 (±1.78) | – | – | – | – | 0 | 71.1 (±11.66) |
2 | MEA | Cu | −3.9 | 7.3 | 42.4 (±14.06) | – | – | 0.4 (±0.58) | 0.1 (±0.09) | – | – | 0 | 0.3 (±0.76) |
3 | AMP | Cu | −0.5 | 7.5 | 47.8 (±5.29) | – | – | – | – | – | – | 0 | 4.1 (±1.91) |
4 | – (CO2) | Pb | −2.5 | 225 | 4.2 (±3.61) | – | 10.1 (±2.53) | – | – | – | 14.9 (±13.97) | 0 | 81.0 (±17.15) |
5 | MEA | Pb | −5.3 | 7.1 | 32.1 (±2.46) | – | 3.8 (±1.16) | 1.1 (±0.51) | 1.7 (±0.67) | – | – | 0 | 20.4 (±3.10) |
6 | AMP | Pb | −1.3 | 6.9 | 8.1 (±15.21) | – | 3.8 (±1.83) | 2.2 (±1.79) | 1.3 (±0.36) | – | – | 3.9 (±2.31) | 79.8 (±3.70) |
