Measurement evidence
Construction of hierarchical nickel cobalt selenide complex hollow spheres for pseudocapacitors with enhanced performance · Quan L., Liu T., Yi M. et al. · Electrochimica Acta · 2018 · 109-116
Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.
NiCo2O4 MHSs · Powder
EDS analysis of NiCo2O4 MHSs; supporting figure/caption is in rendered SI
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| NiCo2O4 EDS elemental composition | Ni, Co and O elements detected | — | — | Text Qualitative | 2 · Supplementary data · Fig. S1 |
| Ni/Co molar ratio in NiCo2O4 MHSs | about 0.5 | 0.5 Ni/Co | — | Text Approximate | 111 · 3. Results and discussion · Fig. S1 |
hierarchical (Ni0.33Co0.67)Se2 CHSs · Powder
EDS analysis of hierarchical (Ni0.33Co0.67)Se2 CHSs; supporting figure/caption is in rendered SI
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| elemental mapping homogeneity | Ni, Co and Se homogeneously dispersed in hierarchical (Ni0.33Co0.67)Se2 CHSs | — | — | Text Qualitative | 111 · 3. Results and discussion · Fig. S1; Fig. S2 |
| selenide EDS elemental composition | Ni, Co and Se elements detected | — | — | Text Qualitative | 3 · Supplementary data · Fig. S2 |
| Ni/Co molar ratio in hierarchical selenide CHSs | about 0.5 | 0.5 Ni/Co | — | Text Approximate | 111 · 3. Results and discussion · Fig. S2 |
hierarchical (Ni0.33Co0.67)Se2 CHSs · Powder
ESCALAB 250; high-resolution Ni 2p, Co 2p and Se 3d spectra
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Co 2p1/2 main binding energy | approximately 795 eV from Fig. 4b axis | — | visual estimate, roughly +/-1 eV | Figure Axis Approximate | 113 · Figure inspection · Fig. 4b |
| Co 2p3/2 main binding energy | approximately 780 eV from Fig. 4b axis | — | visual estimate, roughly +/-1 eV | Figure Axis Approximate | 113 · Figure inspection · Fig. 4b |
| Ni 2p1/2 main binding energy | approximately 872 eV from Fig. 4a axis | — | visual estimate, roughly +/-1 eV | Figure Axis Approximate | 113 · Figure inspection · Fig. 4a |
| Ni 2p3/2 main binding energy | approximately 855 eV from Fig. 4a axis | — | visual estimate, roughly +/-1 eV | Figure Axis Approximate | 113 · Figure inspection · Fig. 4a |
| Ni and Co oxidation states | Ni2+, Ni3+, Co2+ and Co3+ detected | — | — | Text Qualitative | 112 · 3. Results and discussion · Fig. 4a,b |
| Se 3d3/2 binding energy | 55.7 eV | — | — | Text Exact Reported | 112 · 3. Results and discussion · Fig. 4c |
| Se 3d5/2 binding energy | 54.8 eV | — | — | Text Exact Reported | 112 · 3. Results and discussion · Fig. 4c |
| SeOx binding energy | 60.0 eV | — | — | Text Exact Reported | 112 · 3. Results and discussion · Fig. 4c |