“…Due to the limitations of SERS substrates, the usual anode materials for lithium ion batteries, such as carbonaceous materials, oxides, and alloys, do not obviously show surface-enhanced effects. Fortunately, Ag, a common SERS substrate, has a similar electrochemical behavior to other anodes for lithium ion batteries; a Li−Ag alloy and the SEI film are formed during the discharge and charge process. , However, it is still unknown whether the Raman signal of the SEI could be surface-enhanced by the Li−Ag alloy. In this paper, the discharged Ag anodes in Ag/Li cells were investigated by micro-Raman spectroscopy.…”