Synthesis, microstructure, and electrophysical properties of surface-modified polyantimonic acid nanoparticles

This work has considered the modern ideas on the mechanism of surface modification for used nanodispersed inorganic modifiers with an acidic surface, which significantly affect the hydrate and transport properties of polymeric proton-conducting electrolytes. Authors have proposed an alternative approach consisting of the synthesis of new composite nanoscale systems characterized by high ionic conductivity and developed a method for obtaining composite materials with core-shell structure based on an inorganic proton conductor (polyantimonic acid) modified with silicon oxide. The surface morphology of the synthesized nanoparticles has been studied by transmission electron microscopy, and their sizes have been determined. The data on frequency dependence of the electrical impedance are presented and the behavior of the active and reactive components of the impedance and conductivity in the frequency range from 100 Hz to 1 MHz has been analyzed. An equivalent electrical circuit simulating the impedance dispersion for obtained composites with core shell structure based on PAA and SiO2 has been proposed.

Automated summary

This study examines modern ideas regarding the mechanism of surface modification for nanodispersed inorganic modifiers with an acidic surface. The authors propose a new approach to synthesizing composite nanoscale systems with high ionic conductivity and develop a method for obtaining composite materials based on an inorganic proton conductor modified with silicon oxide. The electrical impedance and conductivity of the obtained composites have been analyzed and a simulation model for the impedance dispersion has been proposed.