Measurement evidence
Trimetallic conductive metal-organic frameworks as precatalysts for the oxygen evolution reaction with enhanced activity · Shi X., Hua R., Xu Y. et al. · Sustainable Energy and Fuels · 2020 · 4589-4597
Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.
FeCo0.6Ni0.4-CAT powder/electrode, Fe/(Co+Ni) about 0.32 · Electrode
Bruker Vertex 70, 4000-400 cm^-1, TR mode; SI compares FeCo0.6Ni0.4-CAT, Co0.6Ni0.4-CAT, Co-CAT and Ni-CAT.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| FT-IR spectra collected for representative M-CATs | FT-IR traces shown for FeCo0.6Ni0.4-CAT, Co0.6Ni0.4-CAT, Co-CAT and Ni-CAT | — | — | Caption Qualitative | S-2 · Supporting Information · Figure S1 |
FeCo0.6Ni0.4-CAT powder/electrode, Fe/(Co+Ni) about 0.32 · Electrode
ICP spectrometry; Table S1 gives FeCoxNi1-x-CAT atom contents and atom ratios for 1.0 mM Fe(OAc)2 exchange, and Table S2 gives FeCo0.6Ni0.4-CAT Fe-content tuning.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Fe/(Ni+Co) ratio for 1 mM Fe exchange | 0.30-0.32 for all FeCoxNi1-x-CATs prepared in 1 mM iron(II) acetate | — | — | SI Table Range | S-4 · Supporting Information · Table S1/S2 |
| Fe/(Ni+Co) ratios from Fe(OAc)2 concentration series | 0.06, 0.15, 0.32, and 0.49 for 0.25, 0.5, 1.0, and 2.0 mM Fe(OAc)2 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1/S2 |
| ICP Co/Ni ratio in FeCo0.4Ni0.6-CAT | 0.42/0.58 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1/S2 |
| ICP Co/Ni ratio in FeCo0.6Ni0.4-CAT | 0.59/0.41 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1/S2 |
| ICP Co/Ni ratio in FeCo0.8Ni0.2-CAT | 0.79/0.21 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1/S2 |
| ICP Co atom ratio in FeCo0.4Ni0.6-CAT | 0.42 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Co atom content in FeCo0.4Ni0.6-CAT | 7.18 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe/(Co+Ni) in FeCo0.4Ni0.6-CAT | 0.32 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe atom content in FeCo0.4Ni0.6-CAT | 5.46 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Ni atom ratio in FeCo0.4Ni0.6-CAT | 0.58 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Ni atom content in FeCo0.4Ni0.6-CAT | 9.97 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Co atom ratio in FeCo0.6Ni0.4-CAT | 0.59 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Co atom content in FeCo0.6Ni0.4-CAT | 10.15 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe/(Co+Ni) in FeCo0.6Ni0.4-CAT | 0.32 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe atom content in FeCo0.6Ni0.4-CAT | 5.49 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Ni atom ratio in FeCo0.6Ni0.4-CAT | 0.41 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Ni atom content in FeCo0.6Ni0.4-CAT | 7.11 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Co atom ratio in FeCo0.8Ni0.2-CAT | 0.79 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Co atom content in FeCo0.8Ni0.2-CAT | 13.65 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe/(Co+Ni) in FeCo0.8Ni0.2-CAT | 0.31 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe atom content in FeCo0.8Ni0.2-CAT | 5.45 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Ni atom ratio in FeCo0.8Ni0.2-CAT | 0.21 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Ni atom content in FeCo0.8Ni0.2-CAT | 3.7 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Co atom ratio in FeCo-CAT | 1 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Co atom content in FeCo-CAT | 17.48 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe/(Co+Ni) in FeCo-CAT | 0.31 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe atom content in FeCo-CAT | 5.37 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Ni atom ratio in FeCo-CAT | 0 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Co atom ratio in FeNi-CAT | 0 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe/(Co+Ni) in FeNi-CAT | 0.3 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Fe atom content in FeNi-CAT | 5.42 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Ni atom ratio in FeNi-CAT | 1 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Ni atom content in FeNi-CAT | 17.93 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S1 |
| ICP Co atom ratio in FeCo0.6Ni0.4-CAT from 0.25 Fe(OAc)2 exchange | 0.6 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Co atom content in FeCo0.6Ni0.4-CAT from 0.25 Fe(OAc)2 exchange | 12.76 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Fe/(Co+Ni) in FeCo0.6Ni0.4-CAT from 0.25 Fe(OAc)2 exchange | 0.06 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Fe atom content in FeCo0.6Ni0.4-CAT from 0.25 Fe(OAc)2 exchange | 1.27 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Ni atom ratio in FeCo0.6Ni0.4-CAT from 0.25 Fe(OAc)2 exchange | 0.4 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Ni atom content in FeCo0.6Ni0.4-CAT from 0.25 Fe(OAc)2 exchange | 8.61 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Co atom ratio in FeCo0.6Ni0.4-CAT from 0.5 Fe(OAc)2 exchange | 0.59 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Co atom content in FeCo0.6Ni0.4-CAT from 0.5 Fe(OAc)2 exchange | 11.54 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Fe/(Co+Ni) in FeCo0.6Ni0.4-CAT from 0.5 Fe(OAc)2 exchange | 0.15 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Fe atom content in FeCo0.6Ni0.4-CAT from 0.5 Fe(OAc)2 exchange | 2.94 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Ni atom ratio in FeCo0.6Ni0.4-CAT from 0.5 Fe(OAc)2 exchange | 0.41 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Ni atom content in FeCo0.6Ni0.4-CAT from 0.5 Fe(OAc)2 exchange | 8.07 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Co atom ratio in FeCo0.6Ni0.4-CAT from 1.0 Fe(OAc)2 exchange | 0.59 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Co atom content in FeCo0.6Ni0.4-CAT from 1.0 Fe(OAc)2 exchange | 10.15 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Fe/(Co+Ni) in FeCo0.6Ni0.4-CAT from 1.0 Fe(OAc)2 exchange | 0.32 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Fe atom content in FeCo0.6Ni0.4-CAT from 1.0 Fe(OAc)2 exchange | 5.49 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Ni atom ratio in FeCo0.6Ni0.4-CAT from 1.0 Fe(OAc)2 exchange | 0.41 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Ni atom content in FeCo0.6Ni0.4-CAT from 1.0 Fe(OAc)2 exchange | 7.11 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Co atom ratio in FeCo0.6Ni0.4-CAT from 2.0 Fe(OAc)2 exchange | 0.58 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Co atom content in FeCo0.6Ni0.4-CAT from 2.0 Fe(OAc)2 exchange | 9.01 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Fe/(Co+Ni) in FeCo0.6Ni0.4-CAT from 2.0 Fe(OAc)2 exchange | 0.49 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Fe atom content in FeCo0.6Ni0.4-CAT from 2.0 Fe(OAc)2 exchange | 7.52 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Ni atom ratio in FeCo0.6Ni0.4-CAT from 2.0 Fe(OAc)2 exchange | 0.42 | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
| ICP Ni atom content in FeCo0.6Ni0.4-CAT from 2.0 Fe(OAc)2 exchange | 6.42 wt % | — | — | SI Table Exact Reported | S-4 · Supporting Information · Table S2 |
FeCo0.6Ni0.4-CAT powder/electrode, Fe/(Co+Ni) about 0.32 · Electrode
XPS after accelerated degradation/OER cycling; metal hydroxide/oxyhydroxide assignment.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Post-OER Co2+ 2p3/2 binding energy | 782.1 eV | — | — | Text Exact Reported | 6 · Results and discussion · Fig. 4b |
| Post-OER Co3+ 2p3/2 binding energy | 780.3 eV | — | — | Text Exact Reported | 6 · Results and discussion · Fig. 4b |
| Post-OER Fe 2p3/2 binding energy | 711.35 eV | — | — | Text Exact Reported | 6 · Results and discussion · Fig. S11a cited |
| Post-OER Ni2+ 2p3/2 binding energy | 854.5 eV | — | — | Text Exact Reported | 6 · Results and discussion · Fig. 4a |
| Post-OER Ni3+ 2p3/2 binding energy | 856.2 eV | — | — | Text Exact Reported | 6 · Results and discussion · Fig. 4a |
| Post-OER O 1s fitted peaks | 532.9, 531.8, and 530.5 eV | — | — | Text Exact Reported | 6 · Results and discussion · Fig. S11b cited |
FeCo0.6Ni0.4-CAT powder/electrode, Fe/(Co+Ni) about 0.32 · Electrode
Thermo ESCALAB 250XI with Al Kalpha radiation; pristine M-CAT oxidation states.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Co 2p3/2 binding energy in Co-CAT/Co0.6Ni0.4-CAT/FeCo-CAT | 781.35 eV | — | — | Text Exact Reported | 4 · Results and discussion · Fig. 2b |
| Co 2p3/2 binding energy in FeCo0.6Ni0.4-CAT | 781.20 eV | — | — | Text Exact Reported | 4 · Results and discussion · Fig. 2b |
| Fe 2p1/2 binding energy in Fe-CAT samples | 724.98 eV | — | — | Text Exact Reported | 4 · Results and discussion · Fig. 2c |
| Fe 2p3/2 binding energy in Fe-CAT samples | 711.65 eV | — | — | Text Exact Reported | 4 · Results and discussion · Fig. 2c |
| Ni 2p3/2 binding energy in FeCo0.6Ni0.4-CAT | 855.75 eV | — | — | Text Exact Reported | 4 · Results and discussion · Fig. 2a |
| Ni 2p1/2 binding energy in Ni-CAT/Co0.6Ni0.4-CAT/FeNi-CAT | 873.9 eV | — | — | Text Exact Reported | 4 · Results and discussion · Fig. 2a |
| Ni 2p3/2 binding energy in Ni-CAT/Co0.6Ni0.4-CAT/FeNi-CAT | 856.1 eV | — | — | Text Exact Reported | 4 · Results and discussion · Fig. 2a |
| O 1s fitted peaks before OER | 532.9, 531.59, and 530.73 eV | — | — | Text Exact Reported | 4 · Results and discussion · Fig. 2d |