Determination of intermolecular distances in solid polymer electrolytes by 13C-7Li REDOR NMR

We demonstrate the application of 13C-7Li REDOR NMR for the determination of intermolecular distances in solid polymer electrolytes in which LiPF6 is dissolved in poly(ethylene oxide). Quantitative distance information between the lithium ions and the polymer are obtained from measured dipolar couplings.