Raman spectroscopy of active-carbon electrodes when Au colloids are placed at the electrolyte/electrode interface

Autor:	Grebel, H., Zhang, Y.
Rok vydání:	2023
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science Physics - Chemical Physics Physics - Optics
Druh dokumentu:	Working Paper
Popis:	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. Comment: 14 pages; 10 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2307.05310 Zobrazit plný text záznamu View this record from Arxiv