Transport asymmetry of novel bi-layer hybrid perfluorinated membranes on the base of MF-4SC modified by halloysite nanotubes with platinum

Anatoly Filippov, Daria Petrova, Irina Falina, Natalia Kononenko, Evgenii Ivanov, Yuri Lvov, Vladimir Vinokurov

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Three types of bi-layer hybrid nanocomposites on the base of perfluorinated cation-exchange membrane MF-4SC (Russian analogue of Nafion®-117) were synthesized and characterized. It was found that two membranes possess the noticeable asymmetry of the current-voltage curve (CVC) under changing their orientation towards the applied electric field, despite the absence of asymmetry of diffusion permeability. These phenomena were explained in the frame of the "fine-porous model" expanded for bi-layer membranes. A special procedure to calculate the real values of the diffusion layers thickness and the limiting current density was proposed. Due to asymmetry effects of the current voltage curves of bi-layer hybrid membranes on the base of MF-4SC, halloysite nanotubes and platinum nanoparticles, it is prospective to assemble membrane switches (membrane relays or diodes) with predictable transport properties, founded upon the theory developed here.

Original languageEnglish
Article number366
JournalPolymers
Volume10
Issue number4
DOIs
Publication statusPublished - 25 Mar 2018
Externally publishedYes

Keywords

  • Asymmetry of current-voltage characteristics
  • Diffusion permeability
  • Halloysite
  • Hybrid membrane
  • Modeling transport through a bi-layer membrane
  • Perfluorinated sulfocationic membrane
  • Platinum nanoparticles

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