Measurement evidence
Enhanced cobalt MOF electrocatalyst for oxygen evolution reaction via morphology regulation · Du J., Zhang F., Jiang L. et al. · Inorganic Chemistry Communications · 2023 · 111661
Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.
Co-MOF-A on glassy carbon electrode · Electrode
CV scan rates 40, 60, 80, 100 and 120 mV s-1; Cdl from half current-density difference versus scan rate
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| double-layer capacitance Cdl | 2.43 mF cm-2 | — | — | Text Exact Reported | p004-p005 / journal pages 4-5 · 2. Result and discussion · Fig. 4c; Fig. S9 |
Co-MOF-B on glassy carbon electrode · Electrode
CV scan rates 40, 60, 80, 100 and 120 mV s-1; Cdl from half current-density difference versus scan rate
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| double-layer capacitance Cdl | 1.87 mF cm-2 | — | — | Text Exact Reported | p004-p005 / journal pages 4-5 · 2. Result and discussion · Fig. 4c; Fig. S9 |
Co-MOF-C on glassy carbon electrode · Electrode
CV scan rates 40, 60, 80, 100 and 120 mV s-1; Cdl from half current-density difference versus scan rate
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| double-layer capacitance CdlMarked as a best value within this paper | 5.21 mF cm-2 | — | — | Text Exact Reported | p004-p005 / journal pages 4-5 · 2. Result and discussion · Fig. 4c; Fig. S9 |
Co-MOF-C on glassy carbon electrode · Electrode
Co-MOF-C in 1.0 M KOH; i-t at 500 mV overpotential for 10 h
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| final current density after 10 h | 26.86 mA cm-2 | — | — | Figure Axis Rounded Reported | p005 / journal page 5 · Fig. 5a · Fig. 5a |
| initial current density in chronoamperometry | 29.63 mA cm-2 | — | — | Figure Axis Rounded Reported | p005 / journal page 5 · Fig. 5a · Fig. 5a |
| current decay after 10 hMarked as a best value within this paper | 9.35% decay | — | — | Text Exact Reported | p005 / journal page 5 · 2. Result and discussion · Fig. 5a |
| current retention after 10 hMarked as a best value within this paper | 90.65% | — | — | Figure Axis Rounded Reported | p005 / journal page 5 · Fig. 5a · Fig. 5a |
Co-MOF-C on glassy carbon electrode · Electrode
1000 CV cycles followed by LSV comparison
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| post-1000-cycle LSV degradationMarked as a best value within this paper | no significant degradation after 1000 cycles except a slight decrease in current density | — | — | Text Qualitative | p005 / journal page 5 · 2. Result and discussion · Fig. 5c |
Co-MOF-A on glassy carbon electrode · Electrode
EIS at 0.5 V vs Ag/AgCl/SCE with 5.0 mV amplitude, 0.1-10^6 Hz; Rct from Nyquist semicircle diameter
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| charge transfer resistance Rct | 142 ohm | — | — | Text Exact Reported | p005 / journal page 5 · 2. Result and discussion · Fig. 4d |
Co-MOF-B on glassy carbon electrode · Electrode
EIS at 0.5 V vs Ag/AgCl/SCE with 5.0 mV amplitude, 0.1-10^6 Hz; Rct from Nyquist semicircle diameter
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| charge transfer resistance Rct | 253 ohm | — | — | Text Exact Reported | p005 / journal page 5 · 2. Result and discussion · Fig. 4d |
Co-MOF-C on glassy carbon electrode · Electrode
EIS at 0.5 V vs Ag/AgCl/SCE with 5.0 mV amplitude, 0.1-10^6 Hz; Rct from Nyquist semicircle diameter
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| charge transfer resistance RctMarked as a best value within this paper | 95 ohm | — | — | Text Exact Reported | p005 / journal page 5 · 2. Result and discussion · Fig. 4d |
Co-MOF-A on glassy carbon electrode · Electrode
0.1 M KOH electrolyte; scan rate 5 mV s-1; current density target 10 mA cm-2
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 in 0.1 M KOH | 433 mV | — | — | Text Exact Reported | text-only SI · Fig. S8 text · Fig. S8a-b |
Co-MOF-B on glassy carbon electrode · Electrode
0.1 M KOH electrolyte; scan rate 5 mV s-1; current density target 10 mA cm-2
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 in 0.1 M KOH | 448 mV | — | — | Text Exact Reported | text-only SI · Fig. S8 text · Fig. S8a-b |
Co-MOF-C on glassy carbon electrode · Electrode
0.1 M KOH electrolyte; scan rate 5 mV s-1; current density target 10 mA cm-2
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 in 0.1 M KOHMarked as a best value within this paper | 379 mV | — | — | Text Exact Reported | text-only SI · Fig. S8 text · Fig. S8a-b |
Co-MOF-A on glassy carbon electrode · Electrode
three-electrode test in 1.0 M KOH; scan rate 5 mV s-1; 90% iR correction; potentials vs RHE
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 | 379 mV | — | — | Text Exact Reported | p004 / journal page 4 · 2. Result and discussion · Fig. 4a |
| OER overpotential at 50 mA cm-2 | 637 mV | — | — | Text Exact Reported | p004 / journal page 4 · 2. Result and discussion · Fig. S7 |
Co-MOF-B on glassy carbon electrode · Electrode
three-electrode test in 1.0 M KOH; scan rate 5 mV s-1; 90% iR correction; potentials vs RHE
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 | 390 mV | — | — | Text Exact Reported | p004 / journal page 4 · 2. Result and discussion · Fig. 4a |
| OER overpotential at 50 mA cm-2 | 670 mV | — | — | Text Exact Reported | p004 / journal page 4 · 2. Result and discussion · Fig. S7 |
Co-MOF-C on glassy carbon electrode · Electrode
three-electrode test in 1.0 M KOH; scan rate 5 mV s-1; 90% iR correction; potentials vs RHE
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2Marked as a best value within this paper | 342 mV | — | — | Text Exact Reported | p004 / journal page 4 · 2. Result and discussion · Fig. 4a |
| OER overpotential at 50 mA cm-2Marked as a best value within this paper | about 500 mV | — | — | Text Approximate | p004 / journal page 4 · 2. Result and discussion · Fig. S7 |
Co-MOF-A on carbon fibre paper · Electrode
1.0 M KOH; Co-MOF drop-coated on carbon fibre paper; scan rate 5 mV s-1
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 on carbon fibre paper | 363 mV | — | — | Text Exact Reported | text-only SI · Fig. S8 text · Fig. S8c-d |
Co-MOF-B on carbon fibre paper · Electrode
1.0 M KOH; Co-MOF drop-coated on carbon fibre paper; scan rate 5 mV s-1
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 on carbon fibre paper | 378 mV | — | — | Text Exact Reported | text-only SI · Fig. S8 text · Fig. S8c-d |
Co-MOF-C on carbon fibre paper · Electrode
1.0 M KOH; Co-MOF drop-coated on carbon fibre paper; scan rate 5 mV s-1
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 on carbon fibre paperMarked as a best value within this paper | 331 mV | — | — | Text Exact Reported | text-only SI · Fig. S8 text · Fig. S8c-d |
Co-MOF-C on glassy carbon electrode · Electrode
Own Co-MOF-C row in comparison table: GCE substrate, 1.0 mol/L KOH, 10 h stability
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Table S2 own-row overpotential/current densityMarked as a best value within this paper | 342/10 (mV at mA cm-2) | — | — | SI Table Exact Reported | p013 / SI page S13 · Table S2 · Table S2 |
| Table S2 own-row stability durationMarked as a best value within this paper | 10 h | — | — | SI Table Exact Reported | p013 / SI page S13 · Table S2 · Table S2 |
Co-MOF-A on glassy carbon electrode · Electrode
Tafel plots extracted from LSV curves using eta = b log j + a
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope | 147 mV dec-1 | — | — | Text Exact Reported | p004 / journal page 4 · 2. Result and discussion · Fig. 4b |
Co-MOF-B on glassy carbon electrode · Electrode
Tafel plots extracted from LSV curves using eta = b log j + a
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope | 160 mV dec-1 | — | — | Text Exact Reported | p004 / journal page 4 · 2. Result and discussion · Fig. 4b |
Co-MOF-C on glassy carbon electrode · Electrode
Tafel plots extracted from LSV curves using eta = b log j + a
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slopeMarked as a best value within this paper | 119 mV dec-1 | — | — | Text Exact Reported | p004 / journal page 4 · 2. Result and discussion · Fig. 4b |
Co-MOF-A on glassy carbon electrode · Electrode
TOF calculated at 380 mV overpotential using TOF = J x A / (z x F x n)
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| turnover frequency at 380 mV overpotential | 0.032 s-1 | — | — | SI Table Exact Reported | p014 / SI page S14 · Table S3 · Table S3 |
Co-MOF-B on glassy carbon electrode · Electrode
TOF calculated at 380 mV overpotential using TOF = J x A / (z x F x n)
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| turnover frequency at 380 mV overpotential | 0.022 s-1 | — | — | SI Table Exact Reported | p014 / SI page S14 · Table S3 · Table S3 |
Co-MOF-C on glassy carbon electrode · Electrode
TOF calculated at 380 mV overpotential using TOF = J x A / (z x F x n)
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| turnover frequency at 380 mV overpotentialMarked as a best value within this paper | 0.045 s-1 | — | — | SI Table Exact Reported | p014 / SI page S14 · Table S3 · Table S3 |