| Post-OER Co 2p1/2 binding energy | ~798 eV | — | — | Text Approximate | 10 · 3.6 Post-OER studies · Fig. S2 |
| Post-OER Co 2p3/2 binding energy | ~782.2 eV | — | ~ | Text Approximate | 9 · 3.6. Post-OER studies · Fig. S2b |
| Post-OER Co 2p satellite peak | 787.3 eV | — | — | Text Exact Reported | 10 · 3.6 Post-OER studies · Fig. S2 |
| Post-OER Co 2p satellite peak | 803 eV | — | — | Text Exact Reported | 10 · 3.6 Post-OER studies · Fig. S2 |
| Post-OER new Co3+ Co 2p3/2 peak | 781.5 eV | — | — | Text Exact Reported | 10 · 3.6. Post-OER studies · Fig. S2b |
| Post-OER new Co3+ Co 2p1/2 peak | 796.5 eV | — | — | Text Exact Reported | 10 · 3.6 Post-OER studies · Fig. S2 |
| Post-OER O 1s metal-oxygen peak | 531.4 eV | — | — | Text Exact Reported | 10 · 3.6 Post-OER studies · Fig. S2 |
| Post-OER O 1s metal-hydroxide peak | 532.9 eV | — | — | Text Exact Reported | 10 · 3.6 Post-OER studies · Fig. S2 |
| Post-OER O 1s CoOOH peak | 529.9 eV | — | — | Text Exact Reported | 10 · 3.6. Post-OER studies · Fig. S2d |
| Post-OER O 1s adsorbed water peak | 534 eV | — | — | Text Exact Reported | 10 · 3.6 Post-OER studies · Fig. S2 |
| Post-OER Raman Co-OOH peak | 505 cm-1 | — | around | Text Approximate | 10 · 3.6. Post-OER studies · Fig. S3; Table S1 |
| Post-OER Raman Co-OOH peak | 599 cm-1 | — | around | Text Approximate | 10 · 3.6. Post-OER studies · Fig. S3; Table S1 |
| Post-OER Raman Co-OOH peak | 670 cm-1 | — | around | Text Approximate | 10 · 3.6. Post-OER studies · Fig. S3; Table S1 |
| Pre-OER Raman Co-O bending peak | 450 cm-1; bending Co-O bond | — | — | SI Table Exact Reported | 3 · Table S1 · Table S1 |
| Pre-OER Raman cobalt hydroxide peak | 344 cm-1; Co(OH)2 | — | — | SI Table Exact Reported | 3 · Table S1 · Table S1 |
| Post-OER Raman Co-OOH band rangeMarked as a best value within this paper | 500-670 cm-1; Co-OOH | — | — | SI Table Range | 3 · Table S1 · Table S1 |