Measurement evidence
sp-Carbon Incorporated Conductive Metal-Organic Framework as Photocathode for Photoelectrochemical Hydrogen Generation · Lu Y., Zhong H., Li J. et al. · Angewandte Chemie - International Edition · 2022 · e202208163
Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.
Cu3HHAE2 photocathode on Cu foam · Electrode
Carrier separation efficiency estimated from photocurrents with/without H2O2; eta_cat assumed about 100% with 10 mM H2O2.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| carrier separation efficiencyMarked as a best value within this paper | 0.09 % | 0.0009 fraction | — | Text Exact Reported | 4 · PEC HER measurement · Figure 4d |
Cu3HHAE2 photocathode on Cu foam · Electrode
Cu3HHAE2 cathode at 0 V vs RHE for 32 h / more than 32 h under solar light irradiation; ex situ SEM, elemental mapping, XRD, XPS, FT-IR and Raman after test.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| long-term stability outcome | good stability with only a slight decrease of photocurrent density | — | — | Qualitative Qualitative | 4 · PEC HER measurement · Figure S11 |
| durability test duration | 32 h | — | main text says more than 32 h; SI caption says 32 h | Caption Exact Reported | 17 · Figure S11 caption · Figure S11 |
Cu3HHAE2 photocathode on Cu foam · Electrode
0 V vs RHE; 10 mV AC signal, 100 kHz to 0.01 Hz, DC bias 10 mV; measured with and without light irradiation.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| light-induced charge-transfer resistance change | reduced charge-transfer resistance under light illumination | — | — | Qualitative Qualitative | 4 · PEC HER measurement · Figure 4c |
Cu3HHAE2 photocathode on Cu foam · Electrode
Xenon lamp 100 mW cm-2, AM 1.5G, wavelength filters; measured at 0 V vs RHE.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| peak IPCE at 0 V vs RHEMarked as a best value within this paper | 0.75 % at 480 nm | — | — | Text Exact Reported | 4 · PEC HER measurement · Figure 4b; Figure S10 |
| wavelength of peak IPCE | 480 nm | — | — | Text Exact Reported | 4 · PEC HER measurement · Figure 4b; Figure S10 |
Cu3HHAE2 photocathode on Cu foam · Electrode
Three-electrode cell in 0.1 M Na2SO4 aqueous solution (pH 6.8); Cu foam with catalyst working electrode, Ag/AgCl reference, graphite rod counter; 200 W Xenon lamp, AM 1.5G, 100 mW cm-2; electrolyte degassed with Ar 30 min; i-t at 0 V vs RHE and LSV at 2 mV s-1.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| photocurrent density at 0 V vs RHEMarked as a best value within this paper | about 260 uA cm-2 | 0.26 mA cm-2 | about/up to | Text Approximate | 4 · PEC HER measurement · Figure 4a; Table S1 |
| Cu3HHAE2/HHAE photocurrent ratio | 2.6 higher | — | — | Text Rounded Reported | 4 · PEC HER measurement · Figure 4a |
| Table S1 Cu3HHAE2 photocurrent densityMarked as a best value within this paper | 260 uA cm-2 in 0.1 M Na2SO4 under 200 W Xenon lamp, AM 1.5G, 100 mW cm-2 | 0.26 mA cm-2 | — | SI Table Exact Reported | 22 · Table S1 · Table S1 |
bare Cu foam electrode · Electrode
Bare Cu foam tested under the same PEC HER conditions as catalyst electrodes.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| bare Cu foam photocurrent response | no obvious photocurrent | — | — | Qualitative Qualitative | 4 · PEC HER measurement · Figure 4a |
HHAE monomer cathode on Cu foam · Electrode
Same carrier-separation calculation as Cu3HHAE2.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| HHAE carrier separation efficiency | 0.005 % | 0.00005 fraction | — | Text Exact Reported | 4 · PEC HER measurement · Figure 4d |
HHAE monomer cathode on Cu foam · Electrode
Same EIS conditions as Cu3HHAE2, with and without light irradiation.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| HHAE charge-transfer resistance relative to Cu3HHAE2 | higher charge-transfer resistance than Cu3HHAE2 | — | — | Qualitative Qualitative | 4 · PEC HER measurement · Figure 4c |
HHAE monomer cathode on Cu foam · Electrode
Same IPCE setup as Cu3HHAE2; 0 V vs RHE.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| HHAE peak IPCE at 0 V vs RHE | 0.28 % at 420 nm | — | — | Text Exact Reported | 4 · PEC HER measurement · Figure 4b; Figure S10 |
| HHAE wavelength of peak IPCE | 420 nm | — | — | Text Exact Reported | 4 · PEC HER measurement · Figure 4b; Figure S10 |
HHAE monomer cathode on Cu foam · Electrode
Same three-electrode PEC HER conditions as Cu3HHAE2 control: 0.1 M Na2SO4, 200 W Xenon lamp, AM 1.5G, 100 mW cm-2, 0 V vs RHE for i-t.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| HHAE control photocurrent density at 0 V vs RHE | about 100 uA cm-2 | 0.1 mA cm-2 | about | Text Approximate | 4 · PEC HER measurement · Figure 4a; Table S1 |
| Table S1 HHAE photocurrent density | 100 uA cm-2 in 0.1 M Na2SO4 under 200 W Xenon lamp, AM 1.5G, 100 mW cm-2 | 0.1 mA cm-2 | — | SI Table Exact Reported | 22 · Table S1 · Table S1 |