X-ray photoelectron spectroscopy
Co/Ni-HHTP@CP electrode · Electrode
XPS used to compare Co/Ni-HHTP and Co/Ni-HHTP@CP; SI reports Thermo Fisher EscaLab 250 Xi, monochromatic Al K alpha source, 1486.6 eV, calibrated to C 1s at 284.8 eV.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| C 1s C-C binding energy | 284.8 eV | — | — | Text Exact Reported | 3 · 3. Results and discussion · Figure 2b |
| C 1s C-O binding energy | 286.1 eV | — | — | Text Exact Reported | 3 · 3. Results and discussion · Figure 2b |
| Co2+ Co 2p binding energies | 781.09/796.82 eV | — | — | Text Exact Reported | 4 · 3. Results and discussion · Figure 2d |
| Co3+ Co 2p binding energies | 783.08/798.88 eV | — | — | Text Exact Reported | 4 · 3. Results and discussion · Figure 2d |
| Co 2p3/2 binding energy decrease after composite formation | 0.29 eV decrease | — | — | Text Exact Reported | 4 · 3. Results and discussion · Figure 2d |
| Ni2+ Ni 2p binding energies | 855.81/873.32 eV | — | — | Text Exact Reported | 4 · 3. Results and discussion · Figure 2e |
| Ni3+ Ni 2p binding energies | 857.06/875.28 eV | — | — | Text Exact Reported | 4 · 3. Results and discussion · Figure 2e |
| Ni 2p3/2 binding energy decrease after composite formation | 0.36 eV decrease | — | — | Text Exact Reported | 4 · 3. Results and discussion · Figure 2e |
| O 1s C=O binding energy | 533.31 eV | — | — | Text Exact Reported | 3 · 3. Results and discussion · Figure 2c |
| O 1s M-O binding energy | 530.84 eV | — | — | Text Exact Reported | 3 · 3. Results and discussion · Figure 2c |
| O 1s O-C binding energy | 532.29 eV | — | — | Text Exact Reported | 3 · 3. Results and discussion · Figure 2c |
| C 1s O-C=O binding energy after compositing | 288.98 eV | — | — | Text Exact Reported | 3 · 3. Results and discussion · Figure 2b |