Surface enhanced resonance Raman spectroscopy of rhodamine 6G adsorbed on silver electrode in lithium batteries

Li–Ag alloys and solid electrolyte interface films are produced by electrochemical reactions occurring on the surface of an Ag plate electrode in a lithium battery. The surface enhanced resonance Raman spectrum of rhodamine 6G (Rh 6G) and the surface enhanced Raman spectrum of the solid electrolyte interface film on the surface of Li–Ag alloys were observed for the first time. The surface enhanced Raman spectra varied according to the surface roughness and the concentration of lithium in the Li–Ag alloys.