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SUMMARY:Spatially Resolved Electrochemical Microscopy: Scanning Electroche
 mical Cell Microscopy on Energy Functional Materials
DTSTART:20200217T103000
DTEND:20200217T113000
DTSTAMP:20260403T235743Z
UID:bfd031fbbaf80a66c632b1d0a00ed76eb45531200736d04ce6f67ba4
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Akichika KUMATANI\nRecent progress of electrochemical ba
 sed energy harvesting or storing electrodes is remarkable. In particular\,
  a size control with nanometer/atomic scale of those materials is essentia
 l to enhance their electrochemical activities. Whereas\, for evaluation of
  their electrochemical performance a conventional analytical technique is 
 conducted in bulk. In other words\, there is an issue to understand their 
 local electrochemical properties such as ion transport in lithium-ion batt
 eries and electrocatalytic reactions. In comparison with electronic conduc
 tion analysis by scanning probe microscopies such as scanning tunneling mi
 croscopy\, it is still required to develop a spatially resolved electroche
 mical analysis with high sensitivity in ionic conduction. To overcome it\,
  we have worked on variety of electrochemical microscopies. In this semina
 r\, a self-assembled scanning electrochemical cell microscopy with a singl
 e barrel nanopipette (SECCM) is introduced for visualizing electrochemical
  reaction as electrochemical imaging [1]. The size controllable pipette (e
 .g. 50 nm) is filled with electrolyte and a quasi-counter/reference electr
 ode\, which is specialized to detect ionic current though a meniscus creat
 ed between the pipette and sample surface. The SECCM can utilize in any el
 ectrochemical activities. For battery analysis\, it can be applicable to i
 nvestigate local lithium ion activities on electrodes [2]. Further\, hydro
 gen evolution reaction on two dimensional materials such as graphene is vi
 sualized [3].\n 
LOCATION:I17 4 K2 https://plan.epfl.ch/?room==I17%204%20K2
STATUS:CONFIRMED
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