DFT calculations with VASP, PBE, DFT-D3 and PAW
DFT Se-doped CoS2 model · Model
Vacuum layer 15 Angstrom in z direction; plane-wave cutoff 400 eV; forces relaxed below 0.02 eV/Angstrom; Gamma-centred k meshes 4 x 4 x 1 and 8 x 8 x 1 for energy/DOS.
| Property | Reported value | Normalised value | Uncertainty | Origin and quality | Source |
|---|---|---|---|---|---|
| Number of atoms in CoS2 (200) model | 28 atoms | — | — | SI Table Exact Reported | 15 (render p015) · Supporting Information DFT tables · Table S3 |
| Number of atoms in Se-CoS2 (200) model | 32 atoms | — | — | SI Table Exact Reported | 15 (render p015) · Supporting Information DFT tables · Table S3 |
| DFT DeltaGn* at Co site for pure CoS2 | +0.85 eV | — | — | Text Exact Reported | 9-10 (render p009-p010) · 3.4 · Fig. 7F |
| DFT DeltaGn* at Co site for Se-doped CoS2Marked as a best value within this paper | +0.44 eV | — | — | Text Exact Reported | 9-10 (render p009-p010) · 3.4 · Fig. 7F |
| DFT formation energy for CoS2 (200) model | -4.946 eV | — | — | SI Table Exact Reported | 15 (render p015) · Supporting Information DFT tables · Table S3 |
| DFT formation energy for Se-CoS2 (200) model | -4.851 eV | — | — | SI Table Exact Reported | 15 (render p015) · Supporting Information DFT tables · Table S3 |
| DFT theoretical OER overpotential for pure CoS2 | 0.88 V | — | — | SI Table Exact Reported | 15 (render p015) · Supporting Information DFT tables · Table S2 |
| DFT theoretical OER overpotential for Se-doped CoS2Marked as a best value within this paper | 0.54 V | — | — | SI Table Exact Reported | 15 (render p015) · Supporting Information DFT tables · Table S2 |
| DFT Gibbs free energy change DeltaG1 for CoS2 Co site | 2.08 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG2 for CoS2 Co site | 1.99 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG3 for CoS2 Co site | 0.78 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG4 for CoS2 Co site | 0.07 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT OER overpotential for CoS2 Co site | 0.85 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT ORR overpotential for CoS2 Co site | 1.16 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG1 for CoS2 S site | 1.19 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG2 for CoS2 S site | 1.66 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG3 for CoS2 S site | 1.93 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG4 for CoS2 S site | 0.14 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT OER overpotential for CoS2 S site | 0.70 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT ORR overpotential for CoS2 S site | 1.09 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG1 for Se-CoS2 Co site | 1.48 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG2 for Se-CoS2 Co site | 0.68 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG3 for Se-CoS2 Co site | 1.10 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG4 for Se-CoS2 Co site | 1.67 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT OER overpotential for Se-CoS2 Co site | 0.44 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT ORR overpotential for Se-CoS2 Co site | 0.55 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG1 for Se-CoS2 S site | 0.86 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG2 for Se-CoS2 S site | 1.75 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG3 for Se-CoS2 S site | 0.76 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG4 for Se-CoS2 S site | 1.55 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT OER overpotential for Se-CoS2 S site | 0.52 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT ORR overpotential for Se-CoS2 S siteMarked as a best value within this paper | 0.47 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG1 for Se-CoS2 Se site | 1.20 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG2 for Se-CoS2 Se site | 1.59 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG3 for Se-CoS2 Se site | 0.72 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT Gibbs free energy change DeltaG4 for Se-CoS2 Se site | 1.41 eV | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT OER overpotential for Se-CoS2 Se siteMarked as a best value within this paper | 0.36 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT ORR overpotential for Se-CoS2 Se site | 0.51 V | — | — | SI Table Exact Reported | 15-16 (render p015-p016) · Supporting Information DFT tables · Table 4 |
| DFT R2 reaction free energy for CoS2 (200) | 2.05 eV | — | — | SI Table Exact Reported | 15 (render p015) · Supporting Information DFT tables · Table S2 |
| DFT R2 reaction free energy for Se-doped CoS2 (200)Marked as a best value within this paper | 1.72 eV | — | — | SI Table Exact Reported | 15 (render p015) · Supporting Information DFT tables · Table S2 |