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Keywords:

  • conductivity;
  • hydrogen bonds;
  • nanowires;
  • proton transport;
  • whiskers
Thumbnail image of graphical abstract

Parasitic current seems to be the cause for the “highest proton conductivity” of a material reported to date. Kreuer and Wohlfarth verify this hypothesis by measuring the conductivity of the same materials after preparing them in a different way. They further explain the limits of proton conductivity and comment on the problems of determining the conductivity of small objects (e.g., whiskers, see picture).