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SUMMARY:Engineering Electrochemical Materials for Energy Storage and Susta
 inability: From Rechargeable Batteries to Power Plants
DTSTART:20160524T091500
DTEND:20160524T101500
DTSTAMP:20260406T150521Z
UID:fdd6c30fc1c2729a9374e10fe3efc1aaa654ee4ad3752da07cdcf940
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Asghar Aryanfar - California Institute of Technology\nMetho
 d in portable electronics\, solar/wind farms and power grids. We plan to c
 arry-out the state-of-the-art and system-level research and development wi
 thin the following contexts:\nI. Design and engineering of advanced energy
  storage devices:\ni. Formation of dendrites and dead lithium crystals on 
 the electrode compromise the safety and durability in the rechargeable bat
 teries. Particularly lithium is the lightest and the most electropositive 
 metal and can store about 10 times more energy per unit weight than the co
 nventional anodes\, making the energy density comparable to fossil fuels. 
 We would like to understand the physics\, mechanics and chemistry of insti
 gation and growth of the amorphous and polycrystalline aggregates and engi
 neer methods to inhibit their formation by developing dedicated experiment
 al and computational methods. Furthermore\, we seek to investigate the ela
 stic interaction/failure of main device components during operation and fo
 rmulate computational methods for analysis.\nii. Electrochemical passivati
 on is a critical phenomenon for the systems lifetime stability. We would l
 ike to understand the formation  mechanism\, structural properties and ex
 tract the quantitative impact of the solid electrolyte interphase and doub
 le layer in the efficiency and charge capacity of the system.\niii. Electr
 olytes/electrode are the medium of transport/hosting ions/atoms during the
  operation. We would like to systematically design the electrolytes with t
 he highest ionic conductivity\, mechanical strength and chemical stability
  by studying the physics and chemistry of charge transport/transfer. Tunni
 ng the underline properties would help us to synthesize original electroly
 tes/electrode composites for obtaining higher safety\, energy density and 
 cycling efficiency.\nII. Preventing chronical electrochemical corrosion an
 d fracture: Sustainability of industrial and civil infrastructures require
 s a deep understanding and engineering of their mechanisms of mechanical a
 nd chemical decay. We would like to investigate the corrosion/cracking kin
 etics of metals in extreme conditions temperature\, humidity etc. by coupl
 ing the electrochemical transport and reaction kinetics by developing prec
 ise experiments and affordable algorithms.\nBio: Asghar Aryanfar received 
 the B.S. in Civil and Mechanical Engineering (double major with distinctio
 n) from Sharif University of Technology\, Iran in 2009 and the M.S. and Ph
 .D. degrees in Mechanical Engineering from California Institute of Technol
 ogy\, in 2010 and 2015\, respectively. He is currently Postdoctoral Scient
 ist at University of California\, Los Angeles and Visitor at Caltech. Arya
 nfar’s research has been in the application of experimental electrochemi
 stry and computational multiphysics modeling to electrochemical materials 
 with emphasis on energy storage and sustainability. Current projects inclu
 de analysis and design of reliable rechargeable lithium-based batteries an
 d prediction/hindering of corrosion kinetics of heterogeneous materials in
  extreme environments.
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STATUS:CONFIRMED
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