Measurement evidence
Boosting electrocatalytic CO2 reduction reaction over viologen-functionalized metal-organic frameworks by enhancement of electron-transfer capacity · Dong Y.-L., Jing Z.-Y., Wu Q.-J. et al. · Journal of Materials Chemistry A · 2023 · 8739-8746
Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.
Por(Co)-MOF · Powder
Cdl estimated from CV in 0.5 M KHCO3, potential window -0.15 to -0.25 V vs RHE, scan rates 10-100 mV s-1.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Cdl | 5.26 mF cm-2 | — | — | Text Exact Reported | p004-p005 / article 8742-8743 · Results and discussion · Fig. S29-S30 |
Vg-MOF · Powder
Cdl estimated from CV in 0.5 M KHCO3, potential window -0.15 to -0.25 V vs RHE, scan rates 10-100 mV s-1.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Cdl | 11.31 mF cm-2 | — | — | Text Exact Reported | p004-p005 / article 8742-8743 · Results and discussion · Fig. S29-S30 |
Vg-Por(Co)-MOF(1:1) · Powder
Cdl estimated from CV in 0.5 M KHCO3, potential window -0.15 to -0.25 V vs RHE, scan rates 10-100 mV s-1.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Cdl | 10.09 mF cm-2 | — | — | Figure Axis Approximate | p004-p005 / article 8742-8743 · Results and discussion · Fig. S29-S30 |
Vg-Por(Co)-MOF(2:1) · Powder
Cdl estimated from CV in 0.5 M KHCO3, potential window -0.15 to -0.25 V vs RHE, scan rates 10-100 mV s-1.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Cdl | 11.56 mF cm-2 | — | — | Figure Axis Approximate | p004-p005 / article 8742-8743 · Results and discussion · Fig. S29-S30 |
Vg-Por(Co)-MOF(5:1) · Powder
Cdl estimated from CV in 0.5 M KHCO3, potential window -0.15 to -0.25 V vs RHE, scan rates 10-100 mV s-1.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Cdl | 12.97 mF cm-2 | — | — | Figure Axis Approximate | p004-p005 / article 8742-8743 · Results and discussion · Fig. S29-S30 |
Vg-Por(Co)-MOF(9:1) · Powder
Cdl estimated from CV in 0.5 M KHCO3, potential window -0.15 to -0.25 V vs RHE, scan rates 10-100 mV s-1.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Cdl | 14.71 mF cm-2 | — | — | Text Exact Reported | p004-p005 / article 8742-8743 · Results and discussion · Fig. S29-S30 |
Por(Co)-MOF · Powder
CO2-saturated 0.5 M KHCO3; GC quantified gas products across -0.5 to -1.0 V vs RHE.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| FECO at -0.6 V vs RHE | 89.3% | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4d, Fig. S36 |
Vg-Por(Co)-MOF(1:1) · Powder
CO2-saturated 0.5 M KHCO3; GC quantified gas products across -0.5 to -1.0 V vs RHE.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| FECO at -0.6 V vs RHE | 77.9% | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4d, Fig. S36 |
Vg-Por(Co)-MOF(2:1) · Powder
CO2-saturated 0.5 M KHCO3; GC quantified gas products across -0.5 to -1.0 V vs RHE.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| FECO at -0.6 V vs RHE | 90.2% | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4d, Fig. S36 |
Vg-Por(Co)-MOF(5:1) · Powder
CO2-saturated 0.5 M KHCO3; GC quantified gas products across -0.5 to -1.0 V vs RHE.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| FECO at -0.6 V vs RHE | 87.4% | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4d, Fig. S36 |
Vg-Por(Co)-MOF(9:1) · Powder
CO2-saturated 0.5 M KHCO3; GC quantified gas products across -0.5 to -1.0 V vs RHE.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| FECO at -0.6 V vs RHEMarked as a best value within this paper | 93.7% | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4d, Fig. S36 |
Por(Co)-MOF · Powder
CO2-saturated 0.5 M KHCO3; gas products analysed by GC every 15 min; no liquid products by NMR for Vg-Por(Co)-MOF(9:1).
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at -1.0 V vs RHE | 11.1 mA cm-2 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4c |
Vg-MOF · Powder
CO2-saturated 0.5 M KHCO3; gas products analysed by GC every 15 min; no liquid products by NMR for Vg-Por(Co)-MOF(9:1).
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at -1.0 V vs RHE | 0.8 mA cm-2 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4c |
Vg-Por(Co)-MOF(1:1) · Powder
CO2-saturated 0.5 M KHCO3; gas products analysed by GC every 15 min; no liquid products by NMR for Vg-Por(Co)-MOF(9:1).
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at -1.0 V vs RHE | 15.1 mA cm-2 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4c |
Vg-Por(Co)-MOF(2:1) · Powder
CO2-saturated 0.5 M KHCO3; gas products analysed by GC every 15 min; no liquid products by NMR for Vg-Por(Co)-MOF(9:1).
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at -1.0 V vs RHE | 18.2 mA cm-2 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4c |
Vg-Por(Co)-MOF(5:1) · Powder
CO2-saturated 0.5 M KHCO3; gas products analysed by GC every 15 min; no liquid products by NMR for Vg-Por(Co)-MOF(9:1).
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at -1.0 V vs RHE | 21.5 mA cm-2 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4c |
Vg-Por(Co)-MOF(9:1) · Powder
CO2-saturated 0.5 M KHCO3; gas products analysed by GC every 15 min; no liquid products by NMR for Vg-Por(Co)-MOF(9:1).
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at -1.0 V vs RHEMarked as a best value within this paper | 24.3 mA cm-2 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4c |
Por(Co)-MOF · Powder
CO2-saturated 0.5 M KHCO3; Nafion-117 separated gas-tight H-cell; LSV from 0 to -1.2 V vs RHE at 10 mV s-1; catalyst ink on 1 x 1 cm2 carbon fibre paper.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| total current density at -1.2 V vs RHE | 28.2 mA cm-3 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4b |
Vg-MOF · Powder
CO2-saturated 0.5 M KHCO3; Nafion-117 separated gas-tight H-cell; LSV from 0 to -1.2 V vs RHE at 10 mV s-1; catalyst ink on 1 x 1 cm2 carbon fibre paper.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| total current density at -1.2 V vs RHE | 15.3 mA cm-3 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4b |
Vg-Por(Co)-MOF(1:1) · Powder
CO2-saturated 0.5 M KHCO3; Nafion-117 separated gas-tight H-cell; LSV from 0 to -1.2 V vs RHE at 10 mV s-1; catalyst ink on 1 x 1 cm2 carbon fibre paper.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| total current density at -1.2 V vs RHE | 33.9 mA cm-3 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4b |
Vg-Por(Co)-MOF(2:1) · Powder
CO2-saturated 0.5 M KHCO3; Nafion-117 separated gas-tight H-cell; LSV from 0 to -1.2 V vs RHE at 10 mV s-1; catalyst ink on 1 x 1 cm2 carbon fibre paper.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| total current density at -1.2 V vs RHE | 38.1 mA cm-3 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4b |
Vg-Por(Co)-MOF(5:1) · Powder
CO2-saturated 0.5 M KHCO3; Nafion-117 separated gas-tight H-cell; LSV from 0 to -1.2 V vs RHE at 10 mV s-1; catalyst ink on 1 x 1 cm2 carbon fibre paper.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| total current density at -1.2 V vs RHE | 39.1 mA cm-3 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4b |
Vg-Por(Co)-MOF(9:1) · Powder
CO2-saturated 0.5 M KHCO3; Nafion-117 separated gas-tight H-cell; LSV from 0 to -1.2 V vs RHE at 10 mV s-1; catalyst ink on 1 x 1 cm2 carbon fibre paper.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| total current density at -1.2 V vs RHE | 43.8 mA cm-3 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. 4b |
Vg-Por(Co)-MOF(9:1) · Powder
13C-labelled CO2RR products analysed by GC-MS in 0.5 M KHCO3 and 0.5 M KCl.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO isotope product assignment | 12CO and 13CO in KHCO3; only 13CO in KCl | — | — | Qualitative Qualitative | p006 / article 8744 · Results and discussion · Fig. S42 |
Vg-Por(Co)-MOF(9:1) · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| FECO at 2.3 VMarked as a best value within this paper | 93.78 % | — | — | Text Exact Reported | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
Por(Co)-MOF · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at 2.9 V | 51.4 mA cm^-2 | — | — | Text Exact Reported | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
Vg-MOF · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at 2.9 V | <0.2 mA cm^-2 | — | — | Text Approximate | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
Vg-Por(Co)-MOF(1:1) · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at 2.9 V | 54.1 mA cm^-2 | — | — | Text Exact Reported | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
Vg-Por(Co)-MOF(9:1) · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at 2.9 VMarked as a best value within this paper | 111.1 mA cm^-2 | — | — | Text Exact Reported | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
Por(Co)-MOF · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density under same voltage | 52.6 mA cm^-2 | — | — | Text Exact Reported | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
Vg-Por(Co)-MOF(9:1) · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| stability current density | 58 mA cm^-2 | — | — | Text Rounded Reported | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
Vg-Por(Co)-MOF(9:1) · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| MEA stability duration | 22 h | — | — | Text Rounded Reported | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
Vg-Por(Co)-MOF(9:1) · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| TOF at 2.9 VMarked as a best value within this paper | 4600 h^-1 | — | — | Text Rounded Reported | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
Vg-Por(Co)-MOF(9:1) · Powder
1 cm2 membrane electrode assembly with MOF-coated gas diffusion electrode; 1 M KOH anolyte circulated at 10 mL min-1; humidified CO2 at 30 sccm; LSV 1-3 V at 10 mV s-1; GC every 15 min.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| total current density at 3.0 V | 254.3 mA cm^-2 | — | — | Text Exact Reported | p006 / article 8744 · Results and discussion · Fig. 5, Fig. S41 |
MV@Por(Co)-MOF(9:1) · Powder
CO2-saturated 0.5 M KHCO3; physical/guest viologen control compared with backbone-integrated Vg-Por(Co)-MOF(9:1).
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| CO partial current density at -1.0 V vs RHE | 17.6 mA cm^-3 | — | — | Figure Axis Approximate | p005 / article 8743 · Results and discussion · Fig. S32-S34 |
MV@Por(Co)-MOF(9:1) · Powder
CO2-saturated 0.5 M KHCO3; physical/guest viologen control compared with backbone-integrated Vg-Por(Co)-MOF(9:1).
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| total current density at -1.2 V vs RHE | 35.9 mA cm^-1 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. S32-S34 |
Por(Co)-MOF · Powder
Tafel plots calculated from corresponding overpotentials versus log|jCO| in 0.5 M KHCO3.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope | 87.7 mV dec-1 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. S35 |
Vg-MOF · Powder
Tafel plots calculated from corresponding overpotentials versus log|jCO| in 0.5 M KHCO3.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope | 256.8 mV dec-1 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. S35 |
Vg-Por(Co)-MOF(1:1) · Powder
Tafel plots calculated from corresponding overpotentials versus log|jCO| in 0.5 M KHCO3.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope | 63.6 mV dec-1 | — | — | Figure Axis Approximate | p005 / article 8743 · Results and discussion · Fig. S35 |
Vg-Por(Co)-MOF(2:1) · Powder
Tafel plots calculated from corresponding overpotentials versus log|jCO| in 0.5 M KHCO3.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope | 56.9 mV dec-1 | — | — | Figure Axis Approximate | p005 / article 8743 · Results and discussion · Fig. S35 |
Vg-Por(Co)-MOF(5:1) · Powder
Tafel plots calculated from corresponding overpotentials versus log|jCO| in 0.5 M KHCO3.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope | 49.9 mV dec-1 | — | — | Figure Axis Approximate | p005 / article 8743 · Results and discussion · Fig. S35 |
Vg-Por(Co)-MOF(9:1) · Powder
Tafel plots calculated from corresponding overpotentials versus log|jCO| in 0.5 M KHCO3.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slopeMarked as a best value within this paper | 48.0 mV dec-1 | — | — | Text Exact Reported | p005 / article 8743 · Results and discussion · Fig. S35 |
MOF sample series · Powder
Vg redox potentials E1/E2 measured for four proportional Vg-Por(Co)-MOFs under N2.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| E1 Vg-Por(Co)-MOF(1:1) | 0.285 V vs RHE | — | — | SI Table Exact Reported | p040 · Supporting tables · Table S5 |
| E1 Vg-Por(Co)-MOF(2:1) | 0.214 V vs RHE | — | — | SI Table Exact Reported | p040 · Supporting tables · Table S5 |
| E1 Vg-Por(Co)-MOF(5:1) | 0.144 V vs RHE | — | — | SI Table Exact Reported | p040 · Supporting tables · Table S5 |
| E1 Vg-Por(Co)-MOF(9:1) | 0.109 V vs RHE | — | — | SI Table Exact Reported | p040 · Supporting tables · Table S5 |
| E2 Vg-Por(Co)-MOF(1:1) | -0.132 V vs RHE | — | — | SI Table Exact Reported | p040 · Supporting tables · Table S5 |
| E2 Vg-Por(Co)-MOF(2:1) | -0.169 V vs RHE | — | — | SI Table Exact Reported | p040 · Supporting tables · Table S5 |
| E2 Vg-Por(Co)-MOF(5:1) | -0.171 V vs RHE | — | — | SI Table Exact Reported | p040 · Supporting tables · Table S5 |
| E2 Vg-Por(Co)-MOF(9:1) | -0.177 V vs RHE | — | — | SI Table Exact Reported | p040 · Supporting tables · Table S5 |