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SUMMARY:Effect of an Applied Potential and Added Electrolyte on the Struct
 ure and Nanotribology of Electrode/IL Interfaces
DTSTART:20120709T150000
DTSTAMP:20260510T064851Z
UID:5e6ba3d2d0da00340dd8c51c3a3e401e87a612306928c4b511bf3d57
CATEGORIES:Conferences - Seminars
DESCRIPTION:Rob Atkin\, University of Newcastle\, Australia\nThe effect of
  an applied potential on the nanostructure of the 1-hexyl-3-methylimidazol
 ium tris(pentafluoroethyl) trifluorophosphate [HMIm]FAP / Au(111) interfac
 e has been investigated using atomic force microscopy. At open circuit pot
 ential (OCP) the interfacial layer\, adsorbed to the surface\, is likely m
 ixed but enriched in cations. At higher potentials the level of interfacia
 l liquid structure increases. At negative potentials the level of cation e
 nrichment increases\, while at positive potentials the layer is enriched i
 n the anion. Addition of small amount of inorganic electrolyte reduces the
  interfacial forces for both positive and negative potentials\, but the ef
 fect is particularly pronounced at OCP\, where attractive forces are noted
  that suggest very weak structure. Lateral forces have also been measured 
 as a function of potential in the absence of electrolyte. The data suggest
 s that the cation layer adsorbed at negative potentials is more lubricatin
 g than the anion layer adsorbed at positive potentials.
LOCATION:CHG1494
STATUS:CONFIRMED
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