NMR methods for studying ion and molecular transport in polymer electrolytes

Data demonstrating the potential of NMR methods in studying the formation of transport channels, the mechanisms of ion–polymer matrix interaction, the mobility and diffusion of ions and molecules in polymer electrolytes are analyzed and generalized. Ion-exchange membranes with polymer matrices of various chemical types are considered. The translational mobilities of ions measured by pulsed field gradient NMR are compared with the data on ionic conductivity acquired by impedance spectroscopy methods. Attention is focused on the possibilities of NMR methods in studying the state of ions and molecules in electrolytes and also their diffusional mobility on different spatial scales. Based on the NMR data, the mechanisms of ion transport in ion-exchange perfluorinated membranes are proposed. The bibliography includes 182 references.