  We use surface enhanced Raman spectroscopy (SERS) in studying functionalized
Au nanoparticles (AuNPs) when incorporated in active-carbon (A-C) based
super-capacitor cells. We observe a resonance-like enhancement in the graphitic
line (G-line) vs the D-line (defect line) of the A-C electrode. We also
observed an enhancement in the specific capacitance of super-capacitor cell as
a function of AuNPs concentration. All of these may be explained by the
formation of a quasi-2D array of AuNPs at the interface between electrolyte and
the electrode.
