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SUMMARY:Puzzles with Ionic Liquids and Concentrated Electrolytes
DTSTART:20180319T131500
DTEND:20180319T141500
DTSTAMP:20260509T034011Z
UID:5930c8a0e645cb21cf61dadb69ea163fe14c0d423c4585091f6a3c3f
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Susan Perkin\, University of Oxford UK\nHighly concentra
 ted electrolytes are important in nature and in technology\; most recently
  their importance has been highlighted in the design of next-generation el
 ectrolytes for energy storage devices. An extreme case of concentrated ele
 ctrolyte is pure ionic liquid: solvent-free salt in the liquid state under
  ambient conditions. Recent focus on the physical properties of ionic liqu
 ids and concentrated electrolytes has illuminated several important gaps i
 n our understanding\, together presenting fascinating puzzles for those in
 terested in the nature of the (ionic) liquid state.  In my laboratory we 
 perform high-resolution force measurements between uniform charged surface
 s across liquid using a Surface Force Balance (SFB). I will present some e
 xamples of recent experiments with highly concentrated electrolytes\, demo
 nstrating an anomalously long electrostatic screening length which\, curio
 usly\, increases with increasing volume fraction of ions [1\,2].  \n \n1
 . A. Smith\, A. Lee\, and S. Perkin\, J. Phys. Chem. Lett. 7\, 2157 (2016)
 .\n2. A. Smith\, A. Lee\, and S. Perkin. Phys. Rev. Lett. 118\, 096002 (2
 017).\n3. Lee\, A.\, Perez-Martinez\, C.\, Smith\, A.\, Perkin\, S. Phys. 
 Rev. Lett. 119\, 026002 (2017).\n\nBio: Susan Perkin is Associate Professo
 r of Physical Chemistry and Fellow of Trinity College\, University of Oxfo
 rd. She received her DPhil in 2006 studying with Jacob Klein. She was Juni
 or Research Fellow at Merton College\, Oxford from 2005-2008. She moved to
  UCL in London (2007-2012\, as RCUK Fellow then Lecturer) where she set u
 p a laboratory and research group to work on ionic liquids and liquid inte
 rfaces. In 2012 she was appointed to the Faculty of Chemistry at Oxford. C
 urrent interests include electrostatics in concentrated electrolytes and i
 onic liquids\, molecular mechanisms of friction and lubrication\, field ef
 fects on confined liquids\, graphene surface forces\, and controlling surf
 ace properties through the design of switchable thin films. In the past fe
 w years Susan has been awarded a Starting Grant from the ERC\, the Harriso
 n-Meldola Memorial Prize from the Royal Society of Chemistry\, and a Phili
 p Leverhulme Prize from The Leverhulme Trust.
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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