Table 1. Selected Representative Studies Exploring Variations in Cdl Values Based on Electrode (Sub)surface Compositionsa.
| composition | Cdl | potential | method | electrolyte | ref |
|---|---|---|---|---|---|
| GC | 6 pFd | 0 V DC | AC-SICM | 50 mM KCl | (75) |
| Au | 4 pFd | 0 V DC | AC-SICM | 50 mM KCl | (75) |
| GC | 40 μF cm–2 | 0 V vs Ag/AgCl | EIS | 50 mM KCl | (75) |
| Au | 20 μF cm–2 | 0 V vs Ag/AgCl | EIS | 50 mM KCl | (75) |
| Pt(111) | 25 μF cm–2 | pzc | EIS | 0.05 M LiClO4 | (198, 393) |
| Au(111) | 14 μF cm–2 | pzc | EIS | 0.05 M LiClO4 | (198, 393) |
| Au | 7 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Ag | 41 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Pd | 10 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Pt | 35 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Alb | 56 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Crb | 31 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Feb | 62 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| FTOc | 8 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Nib | 31 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| NiFeb | 27 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| NiFe(OH) | 20 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Tab | 21 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Tib | 22 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| NiS | 17 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| CoSe | 8 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| NiSe | 25 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| C | 17 μF cm–2 | ±50 mV OCP | CV | 0.15 M NaClO4 | (396) |
| Au | 9 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| Ag | 7 μF cm–2 | –600 mV vs Ag/AgCl | CV | 0.15 M KPF6, CH3CN | (396) |
| Pd | 16 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| Pt | 22 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| Alb | 6 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| Crb | 16 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| Feb | 17 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| FTOc | 7 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| Nib | 12 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| NiFeb | 9 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| NiFe(OH) | 7 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| Tab | 12 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| Tib | 15 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| NiS | 10 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| CoSe | 8 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| NiSe | 3 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| C | 10 μF cm–2 | ±50 mV OCP | CV | 0.15 M KPF6, CH3CN | (396) |
| low-carbon steel coated with tin | 70–100 nFd | OCP | LEIS | 1 mM KClO4 | (73) |
| epoxy phenolic varnish | 45 nFd | OCP | LEIS | 1 mM KClO4 | (73) |
| Al alloy (oxide)b | 40 pFd/0.1 μF cm–2 | OCP | LEIS | 10 mM KCl | (244) |
| PMMA | 3 pF | OCP | LEIS | 10 mM KCl | (244) |
| Pd(111) | 27 μF cm–2 | pzfc | dEIS | 5 mM NaF | (399) |
| Pd10 ML/Pt(111) | 35 μF cm–2 | pzfc | dEIS | 5 mM NaF | (399) |
| Pd3 ML/Pt(111) | 30 μF cm–2 | pzfc | dEIS | 5 mM NaF | (399) |
| PdML/Pt(111) | 40 μF cm–2 | pzfc | dEIS | 5 mM NaF | (399) |
| AgML/Ir(111) | 30 μF cm–2 | pzc | dEIS | 5 mM KClO4 | (400) |
| AgML/Rh(111) | 28 μF cm–2 | pzc | dEIS | 5 mM KClO4 | (400) |
| AgML/Pd(111) | 22 μF cm–2 | pzc | dEIS | 5 mM KClO4 | (400) |
| AgML/Au(111) | 24 μF cm–2 | pzc | dEIS | 5 mM KClO4 | (400) |
| AgML/Pt(111) | 24 μF cm–2 | pzc | dEIS | 5 mM KClO4 | (400) |
| Ag(111) | 18 μF cm–2 | pzc | dEIS | 5 mM KClO4 | (400) |
| Pt31.2Pd43.3Ir9.8Ru14.2Ag1.4 | (0.35 ± 0.04) V vs Ag/AgCl | pzc | SECCM | 10 mM HClO4 | (247) |
| Pt32.3Pd45.2Ir9Ru12.5Ag9.7 | (0.39 ± 0.03) V vs Ag/AgCl | pzc | SECCM | 10 mM HClO4 | (247) |
| Pt26.5Pd44.6Ir11.7Ru16.1Ag1.1 | (0.32 ± 0.02) V vs Ag/AgCl | pzc | SECCM | 10 mM HClO4 | (247) |
| Pt18Pd38.4Ir18Ru24.3Ag1.3 | (0.23 ± 0.01) V vs Ag/AgCl | pzc | SECCM | 10 mM HClO4 | (247) |
| Pt19.6Pd45.6Ir16.1Ru17.6Ag1.1 | (0.28 ± 0.02) V vs Ag/AgCl | pzc | SECCM | 10 mM HClO4 | (247) |
| Pt17.8Pd62.1Ir11.3Ru8.0Ag0.8 | (0.3 ± 0.01) V vs Ag/AgCl | pzc | SECCM | 10 mM HClO4 | (247) |
| Pt13.4Pd33.6Ir23.8Ru27.9Ag1.4 | (0.23 ± 0.02) V vs Ag/AgCl | pzc | SECCM | 10 mM HClO4 | (247) |
| Pt12.2Pd39.9Ir26.2Ru21Ag0.9 | (0.24 ± 0.02) V vs Ag/AgCl | pzc | SECCM | 10 mM HClO4 | (247) |
a
The table columns list the material (sub)surface compositions, corresponding Cdl values, potentials at which Cdl values were determined, methods used, electrolytes employed, and references cited. It should be noted that several Cdl values are estimated from the original published data. This table serves as a comprehensive overview of the cited literature.
b
Oxide-passivated surface during experimental conditions with the bulk most likely in its fully reduced state.
c
Fully bulk conductive oxides.
d
No surface normalization due to the usage of scanning probe approaches.