Table 2. Electrochemical Reactions.
| reaction | E0 (V vs SHE) |
|---|---|
| CDR | |
| CO2 + 2 e– + 2 H3O+ ⇌ CO + 3 H2O | –0.11 |
| CO2 + 2 e– + 2 H2CO3 ⇌ CO + 2 HCO3– + H2O | –0.32 |
| CO2 + 2 e– + 2 HCO3– ⇌ CO + 2 CO32– + H2O | –0.72 |
| CO2 + 2 e– + H2O ⇌ CO + 2 HO– | –0.94 |
| HER | |
| 2 H3O+ + 2 e– ⇌ H2 + 2 H2O | 0 |
| 2 H2CO3 + 2 e– ⇌ H2 + 2 HCO3– | –0.21 |
| 2 HCO3– + 2 e– ⇌ H2 + 2 CO32– | –0.61 |
| 2 H2O + 2 e– ⇌ H2 + 2 HO– | –0.83 |