Study of salt-nanoprecipitation in solid-polymer electrolyte by means of tracer diffusion and nanospace analysis

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The phenomenon of salt-nanoprecipitation was studied for solid-polymer electrolyte by impedance measurements, diffusion experiments, positronium (Ps) lifetime spectroscopy, and positron-age-momentum-correlation (AMOC) spectroscopy. The impedance measurements, diffusion experiments, and Ps lifetime spectroscopy significantly detected the onset of salt-nanoprecipitation. AMOC spectroscopy revealed that the elemental environment around the open nanospaces began to vary earlier than the onset of salt-nanoprecipitation detected by the impedance measurements, diffusion experiments, and Ps lifetime spectroscopy. This implies the pre-transition phenomenon of the salt-nanoprecipitation.