Table 2.
DFT predictions of total capacitance of aqueous bare Pt(111) and Pt(111) with adsorbed CO, and the spatial decomposition of the DFT capacitances and inverse capacitances (from Fig. 1).
System | Method | Capacitance [μF/cm2]
|
Inverse Capacitance [cm2/μF]
|
|||||||
---|---|---|---|---|---|---|---|---|---|---|
Total | Pt (Cm) |
CO (Ca) |
Gap (Cg) |
Diffuse (Cd) |
Pt |
CO |
Gap |
Diffuse |
||
| ||||||||||
Pt | GGA | 27.5 | 784. | – | 32.0 | 259. | 0.0013 | – | 0.0312 | 0.0039 |
LDA | 26.4 | 598. | – | 31.0 | 250. | 0.0017 | – | 0.0323 | 0.0040 | |
| ||||||||||
Pt-CO | GGA | 9.7 | 228. | 39.5 | 14.3 | 252. | 0.0044 | 0.0253 | 0.0698 | 0.0040 |
LDA | 9.4 | 185. | 39.2 | 14.0 | 235. | 0.0054 | 0.0255 | 0.0716 | 0.0043 |