Measurement evidence
Enhancing One-Dimensional Charge Transport in Metal-organic Framework Hexagonal Nanorods for Electrocatalytic Oxygen Evolution · Lai Y., Xiao L., Tao Y. et al. · ChemSusChem · 2021 · 1830-1834
Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.
commercial IrO2 benchmark · Powder
Cdl determined by CV method from capacitive current versus scan rate for commercial IrO2 benchmark.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| IrO2 double-layer capacitance Cdl | approximately 1.98 mF cm-2 | — | visual read from Figure 2f label | Visual Estimate Uncertain | 1832 · Electrocatalytic properties · Figure 2f |
Ni-HXR hexagonal nanorods · Powder
Cdl determined by CV method from capacitive current versus scan rate for monometallic Ni-HXR control.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Ni-HXR double-layer capacitance Cdl | approximately 1.68 mF cm-2 | — | visual read from Figure 2f label | Visual Estimate Uncertain | 1832 · Electrocatalytic properties · Figure 2f |
NiFe-HXR hexagonal nanorods · Powder
Cdl determined by CV method from capacitive current versus scan rate.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| double-layer capacitance CdlMarked as a best value within this paper | approximately 3.71 mF cm-2 | — | visual read from Figure 2f label | Visual Estimate Approximate | 1832 · Electrocatalytic properties · Figure 2f |
NiFe-HXR hexagonal nanorods · Powder
Stability i-t measurement at constant overpotential of 314 mV; caption lists 1.544 V vs RHE.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| final current density during chronoamperometry | 49.06 mA cm-2 | — | — | Text Exact Reported | 1833 · Electrocatalytic properties · Figure 2h |
| initial current density during chronoamperometry | 49.82 mA cm-2 | — | — | Text Exact Reported | 1833 · Electrocatalytic properties · Figure 2h |
| current density loss during 25 h chronoamperometry | 0.76 mA cm-2, about 1.5 % loss | 1.5 % | about 1.5 % | Text Rounded Reported | 1833 · Electrocatalytic properties · Figure 2h |
| chronoamperometry duration | 25 h | — | — | Text Exact Reported | 1833 · Electrocatalytic properties · Figure 2h |
| chronoamperometry overpotential | 314 mV | — | — | Text Exact Reported | 1833 · Electrocatalytic properties · Figure 2h |
NiFe-HXR hexagonal nanorods · Powder
Faradaic efficiency for oxygen evolution at 289 mV overpotential; generated O2 measured by CEM DT-8890 manometer.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| faradaic efficiency for oxygen production | 96 % | — | — | Text Exact Reported | 1833 · Electrocatalytic properties · Figure 2g |
commercial IrO2 benchmark · Powder
Mass activity at 300 mV overpotential for commercial IrO2 benchmark.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| IrO2 mass activity at 300 mV overpotential | 20.9 A g-1 | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2c |
Ni-HXR hexagonal nanorods · Powder
Mass activity at 300 mV overpotential for monometallic Ni-HXR control.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Ni-HXR mass activity at 300 mV overpotential | 335.5 A g-1 | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2c |
NiFe-HXR hexagonal nanorods · Powder
Mass activity at 300 mV overpotential; OER current divided by Ni and Fe mass loading determined by ICP-AES.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| mass activity at 300 mV overpotentialMarked as a best value within this paper | 1554.8 A g-1 | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2c |
Fe-HXR hexagonal nanorods · Powder
O2-saturated 1.0 M KOH electrolyte, typical three-electrode setup; overpotential at 10 mA cm-2.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 | 371 mV | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2a and Figure S5 referenced |
commercial IrO2 benchmark · Powder
O2-saturated 1.0 M KOH electrolyte, typical three-electrode setup; commercial IrO2 benchmark.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 | 300 mV | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2a |
Ni0.2Fe0.8-HXR · Powder
OER LSV ratio-control sample in 1.0 M KOH.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Ni/Fe ratio optimisation | 1:1 NiFe-HXR is superior to Ni0.2Fe0.8-HXR | — | — | Text Qualitative | 1832 · Electrocatalytic properties · Figure S5 |
Ni0.8Fe0.2-HXR · Powder
OER LSV ratio-control sample in 1.0 M KOH.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Ni/Fe ratio optimisation | 1:1 NiFe-HXR is superior to Ni0.8Fe0.2-HXR | — | — | Text Qualitative | 1832 · Electrocatalytic properties · Figure S5 |
Ni-HXR hexagonal nanorods · Powder
O2-saturated 1.0 M KOH electrolyte, typical three-electrode setup, scan rate 5 mV s-1; overpotential at 10 mA cm-2.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 | 320 mV | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2a |
NiFe-HXR hexagonal nanorods · Powder
O2-saturated 1.0 M KOH electrolyte, typical three-electrode setup, scan rate 5 mV s-1; overpotential at 10 mA cm-2.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| catalyst ink loaded volume | 50 uL | — | — | Text Exact Reported | SI p. 3 · 1.3 Electrochemical Characterizations |
| catalyst ink sample mass | 3 mg | — | — | Text Exact Reported | SI p. 3 · 1.3 Electrochemical Characterizations |
| LSV scan rate | 5 mV s-1 | — | — | Text Exact Reported | SI p. 3 · 1.3 Electrochemical Characterizations |
| OER overpotential at 10 mA cm-2Marked as a best value within this paper | 289 mV | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2a |
| working electrode immersed area | 1 cm x 1 cm | — | — | Text Exact Reported | SI p. 3 · 1.3 Electrochemical Characterizations |
NiFeOx derived oxide · Powder
OER overpotential at 10 mA cm-2 compared with NiFe-HXR.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| OER overpotential at 10 mA cm-2 | 295 mV | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure S6 referenced |
commercial IrO2 benchmark · Powder
Tafel slope for commercial IrO2 OER benchmark.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope | 89 mV dec-1 | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2b |
Ni-HXR hexagonal nanorods · Powder
Tafel slope for monometallic Ni-HXR OER control.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope | 50 mV dec-1 | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2b |
NiFe-HXR hexagonal nanorods · Powder
Tafel slopes derived from corresponding LSV curves for OER catalysis.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slopeMarked as a best value within this paper | 43 mV dec-1 | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2b |
commercial IrO2 benchmark · Powder
TOF evaluated at 350 mV overpotential for commercial IrO2 benchmark.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| IrO2 TOF at 350 mV overpotential | 0.13 s-1 | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2d |
Ni-HXR hexagonal nanorods · Powder
TOF evaluated at 350 mV overpotential for monometallic Ni-HXR control.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Ni-HXR TOF at 350 mV overpotential | 0.52 s-1 | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2d |
NiFe-HXR hexagonal nanorods · Powder
TOF evaluated at 350 mV overpotential.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| TOF at 350 mV overpotentialMarked as a best value within this paper | 4.54 s-1 | — | — | Text Exact Reported | 1832 · Electrocatalytic properties · Figure 2d |