Table 1 Summary of proposed reaction schemes with (*)CO coupling as the possible RDS for C2+ products formation (detailed derivations are shown in Supplementary Note 1)
From: Unraveling the rate-determining step of C2+ products during electrochemical CO reduction
Stepa | Proposed reaction scheme for C2+ products formation | CO pressure | \({n}_{CO}\) | \({n}_{{H}^{+}}\) | \({n}_{{H}_{2}O}\) |
|---|---|---|---|---|---|
A1 | CO + * \(\to\) *CO | ||||
A2 | *CO + *CO + eδ- \(\mathop{\to }\limits^{{{{{\mbox{RDS}}}}}}\) *C2O2δ- + * | High | 0 | 0 | 0 |
Low | 2 | 0 | 0 | ||
B1 | CO + * \(\to\) *CO | ||||
B2 | *CO + CO + eδ- \(\mathop{\to }\limits^{{{{{\mbox{RDS}}}}}}\) *C2O2δ- | High | 1 | 0 | 0 |
Low | 2 | 0 | 0 | ||
