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SUMMARY:Synthesis and assembly of atomically thin TMDs for energy conversi
 on and energy storage - Dr. Cecilia Mattevi\, Department of Materials\, Im
 perial College London
DTSTART:20191108T150000Z
DTEND:20191108T160000Z
UID:TALK128794@talks.cam.ac.uk
CONTACT:Yonatan Calahorra
DESCRIPTION:Miniaturization over three-dimensions is very attractive for f
 uture on-chip technologies where device efficiencies need to be optimized 
 over small areas. This is a new challenge\, as device miniaturization has 
 been focused to achieve planar-geometries primarily.\nDirect-ink-writing (
 or robocasting)\, is an additive manufacturing technique that brings the p
 ossibility of fabricating architectures with programmable design in the th
 ree-dimensions (3D) at different length scales.\nIn this seminar\, I will 
 talk about our work on 3D printed electrodes for microsupercapacitors from
  water-based 2D atomically thin material inks and our synthesis approaches
  to the 2D layers. The materials of choice are transition metal dichalcoge
 nides (TMDs)\, which are attracting a considerable interest owing to their
  multiple functionalities. The inks are composed by highly concentrated at
 omically thin sheets of TMDs\, either exfoliated from bulk powders or obta
 ined via direct synthesis in solution. By tailoring the rheology of our fo
 rmulated inks\, printability has been achieved along with mechanical robus
 tness of the printed structures. The printed architectures\, from woodpile
  to interdigitated electrodes\, are extended over a few mm in the three-di
 mensions and present struts widths as small as 100 μm. The microsupercapa
 citors show leading areal capacitance and energy density as compared to pl
 anar microsupercapacitors\, and stability in different electrolytes
LOCATION:Goldsmiths 1\, Lecture Theatre\, Department of Materials Science 
 &amp\; Metallurgy
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