Operando Fluorescence Lifetime Imaging Microscopy During Li+ Intercalation into Graphitic Electrodes

Abstract

The evolution of emission background within Li-ion half-cells was monitored using operando fluorescence lifetime imaging microscopy. Fluorescence lifetimes were spatially mapped on graphite electrodes during lithiation and delithiation within two electrolyte formulations containing either a Li[PF6] or Li[ClO4] salt, which highlighted differing emission characteristics associated with salt stability.