Measurement evidence
Micro-sized conductive metal–organic framework nanosheets for the electrochemical hydrogen evolution reaction in acidic media · Wang Y., Wang J., Zeng J. et al. · Journal of Materials Chemistry A · 2025 · 42273-42280
Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.
Co-HITP nanosheets (Co-HITP NSs) · Nanosheet
Non-Faradaic potential window, scan rates 2-10 mV s^-1; Cdl extracted from j vs scan-rate slope.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Double-layer capacitance for Co-HITP NSs | 1.01 mF cm-2 | — | — | Figure Axis Rounded Reported | p005 / 42277 · Results and discussion · Fig. 3g |
CoNi-HITP nanosheets (CoNi-HITP NSs) · Nanosheet
Non-Faradaic potential window, scan rates 2-10 mV s^-1; Cdl extracted from j vs scan-rate slope.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Double-layer capacitance for CoNi-HITP NSsMarked as a best value within this paper | 1.39 mF cm-2 | — | — | Figure Axis Rounded Reported | p005 / 42277 · Results and discussion · Fig. 3g |
Ni-HITP nanosheets (Ni-HITP NSs) · Nanosheet
Non-Faradaic potential window, scan rates 2-10 mV s^-1; Cdl extracted from j vs scan-rate slope.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Double-layer capacitance for Ni-HITP NSs | 1.17 mF cm-2 | — | — | Figure Axis Rounded Reported | p005 / 42277 · Results and discussion · Fig. 3g |
Ni-HITP nanoparticles (Ni-HITP NPs) · Powder
Measured at -0.5 V for HER; SI gives 0.1 Hz to 1 MHz and 5 mV AC perturbation.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Charge transfer resistance for Ni-HITP NPs | 930 ohm | — | — | Text Exact Reported | p005 / 42277 · Results and discussion · Fig. 3b |
Ni-HITP nanosheets (Ni-HITP NSs) · Nanosheet
Measured at -0.5 V for HER; SI gives 0.1 Hz to 1 MHz and 5 mV AC perturbation.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Charge transfer resistance for Ni-HITP NSsMarked as a best value within this paper | 48 ohm | — | — | Text Exact Reported | p005 / 42277 · Results and discussion · Fig. 3b |
Co-HITP nanoparticles (Co-HITP NPs) · Powder
Ar-saturated 0.5 M H2SO4; conventional three-electrode configuration.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Co-HITP NP screening HER activityMarked as a best value within this paper | most positive onset potential | — | — | Text Qualitative | p002 / 42274 · Results and discussion · Fig. S4 |
Co-HITP nanosheets (Co-HITP NSs) · Nanosheet
Ar-saturated 0.5 M H2SO4; geometric-area-normalised current density; 85% iR correction.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| HER overpotential at 100 mA cm-2 for Co-HITP NSs | 325 mV at 100 mA cm-2 | 100 mA cm-2 | — | Text Exact Reported | p006 / 42278 · Results and discussion · Fig. 3e |
CoNi-HITP nanosheets (CoNi-HITP NSs) · Nanosheet
Ar-saturated 0.5 M H2SO4; geometric-area-normalised current density; 85% iR correction.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| HER overpotential at 100 mA cm-2 for CoNi-HITP NSsMarked as a best value within this paper | 151 mV at 100 mA cm-2 | 100 mA cm-2 | — | Text Exact Reported | p006 / 42278 · Results and discussion · Fig. 3e |
Cu-HITP nanoparticles · Powder
Ar-saturated 0.5 M H2SO4; conventional three-electrode configuration.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Cu-HITP NP screening HER activity | followed Co-HITP in onset potential | — | — | Text Qualitative | p002 / 42274 · Results and discussion · Fig. S4 |
Fe-HITP nanoparticles/aggregate · Powder
Ar-saturated 0.5 M H2SO4; conventional three-electrode configuration.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Fe-HITP NP overpotential | overpotential exceeding 400 mV | — | — | Text Range | p002 / 42274 · Results and discussion · Fig. S4 |
Ni-HITP nanoparticles (Ni-HITP NPs) · Powder
Ar-saturated 0.5 M H2SO4; three-electrode cell; RDE 5 mm; catalyst loading 0.2 mg cm^-2; 85% iR correction; 10 mV s^-1; no rotation per SI.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| HER overpotential at 10 mA cm-2 for Ni-HITP NPs | 253 mV at 10 mA cm-2 | 10 mA cm-2 | — | Text Exact Reported | p005 / 42277 · Results and discussion · Fig. 3a |
Ni-HITP nanoparticles (Ni-HITP NPs) · Powder
Ar-saturated 0.5 M H2SO4; conventional three-electrode configuration.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Ni-HITP NP screening HER activity | followed Co-HITP and Cu-HITP in onset potential | — | — | Text Qualitative | p002 / 42274 · Results and discussion · Fig. S4 |
Ni-HITP nanosheets (Ni-HITP NSs) · Nanosheet
Ar-saturated 0.5 M H2SO4; three-electrode cell; RDE 5 mm; catalyst loading 0.2 mg cm^-2; 85% iR correction; 10 mV s^-1; no rotation per SI.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| HER overpotential at 10 mA cm-2 for Ni-HITP NSs | 105 mV at 10 mA cm-2 | 10 mA cm-2 | — | Text Exact Reported | p005 / 42277 · Results and discussion · Fig. 3a |
Ni-HITP nanosheets (Ni-HITP NSs) · Nanosheet
Ar-saturated 0.5 M H2SO4; geometric-area-normalised current density; 85% iR correction.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| HER overpotential at 100 mA cm-2 for Ni-HITP NSs | 453 mV at 100 mA cm-2 | 100 mA cm-2 | — | Text Exact Reported | p006 / 42278 · Results and discussion · Fig. 3e |
Zn-HITP nanoparticles/aggregate · Powder
Ar-saturated 0.5 M H2SO4; conventional three-electrode configuration.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Zn-HITP NP overpotential | overpotential exceeding 400 mV | — | — | Text Range | p002 / 42274 · Results and discussion · Fig. S4 |
Co-HITP nanosheets (Co-HITP NSs) · Nanosheet
Specific activity calculated after ECSA acquisition.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Specific activity for Co-HITP NSs | -359.4 mA cm-2 | — | — | Text Exact Reported | p006 / 42278 · Results and discussion · Fig. 3h |
CoNi-HITP nanosheets (CoNi-HITP NSs) · Nanosheet
Specific activity calculated after ECSA acquisition.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Specific activity for CoNi-HITP NSsMarked as a best value within this paper | -446.1 mA cm-2 | — | — | Text Exact Reported | p006 / 42278 · Results and discussion · Fig. 3h |
Ni-HITP nanosheets (Ni-HITP NSs) · Nanosheet
Specific activity calculated after ECSA acquisition.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Specific activity for Ni-HITP NSs | -127.9 mA cm-2 | — | — | Text Exact Reported | p006 / 42278 · Results and discussion · Fig. 3h |
Ni-HITP nanosheets (Ni-HITP NSs) · Nanosheet
0.5 M H2SO4; constant applied potential -0.12 V; 80 h.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Ni-HITP NS retained current density after stability test | -10 mA cm-2 | — | — | Text Exact Reported | p005 / 42277 · Results and discussion · Fig. 3d |
| Applied potential for Ni-HITP NS stability test | -0.12 V | — | — | Text Exact Reported | p005 / 42277 · Results and discussion · Fig. 3d |
| Ni-HITP NS stability duration | 80 h | — | — | Text Exact Reported | p005 / 42277 · Results and discussion · Fig. 3d |
Co-HITP nanosheets (Co-HITP NSs) · Nanosheet
0.5 M H2SO4 HER conditions.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope for Co-HITP NSs | 82.4 mV dec-1 | — | — | Text Exact Reported | p006 / 42278 · Results and discussion · Fig. 3c/f |
CoNi-HITP nanosheets (CoNi-HITP NSs) · Nanosheet
0.5 M H2SO4 HER conditions.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope for CoNi-HITP NSsMarked as a best value within this paper | 65.8 mV dec-1 | — | — | Text Exact Reported | p006 / 42278 · Results and discussion · Fig. 3c/f |
Ni-HITP nanoparticles (Ni-HITP NPs) · Powder
0.5 M H2SO4 HER conditions.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope for Ni-HITP NPs | 358.4 mV dec-1 | — | — | Text Exact Reported | p005 / 42277 · Results and discussion · Fig. 3c/f |
Ni-HITP nanosheets (Ni-HITP NSs) · Nanosheet
0.5 M H2SO4 HER conditions.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Tafel slope for Ni-HITP NSs | 150.4 mV dec-1 | — | — | Text Exact Reported | p005 / 42277 · Results and discussion · Fig. 3c/f |