msepostdoc-list Fwd: Viskanta Lecture / Tuesday, March 25th, 2-3 pm / ME 2054

[Donna Bystrom]

-------- Original Message --------
Subject: 	Viskanta Lecture / Tuesday, March 25th, 2-3 pm / ME 2054
Date: 	Thu, 20 Mar 2014 17:48:40 +0000
From: 	Baumgardt, Jacqueline C. <jackieb at purdue.edu>
To: 	Gelfand, Johanna K <jo at purdue.edu>, Donna Bystrom 
(bystrom at ecn.purdue.edu) <bystrom at ecn.purdue.edu>, Chris Murray 
(chrismur at ecn.purdue.edu) <chrismur at ecn.purdue.edu>
CC: 	Pan, Liang <liangpan at purdue.edu>



Jo, Donna & Chris,

Can you please share the attached seminar announcement with your faculty 
& grad students?

Thank you.

Jackie

_________________________________________________

This Viskanta fellowship serves to honor the tremendous legacy of Prof. 
Raymond Viskanta and derives from a recently established endowment.  The 
Viskanta Fellowship is annually awarded to an individual who has 
demonstrated abilities to perform independent and innovative research in 
the field of thermal sciences.  This year, Professor Laurent Pilon is 
invited to visit us as Viskanta Fellow and give the 2014 Viskanta 
Lecture.  Prof. Pilon graduated from Purdue and currently is a full 
professor in the Department of Mechanical and Aerospace Engineering at 
UCLA.  His research focuses on radiation transfer, applied optics, 
interfacial and transport phenomena, nanostructured materials for energy 
applications such as pyroelectric energy conversion, energy storage 
systems, photosynthetic production of biofuels ( 
http://www.seas.ucla.edu/~pilon/ <http://www.seas.ucla.edu/%7Epilon/>  ).

____________________________________

*2014 Viskanta Lecture*

*in Thermal Sciences*

*Tuesday, March 25, 2014*

*2:00pm, Room ME 2054*

*Laurent Pilon*

*Professor*

*University of California, Los Angeles*

Continuum Modeling of Interfacial and Transport Phenomena in Electric 
Double Layer Capacitors

Abstract:  Electrical double layer capacitors (EDLCs), also known as 
supercapacitors, have attracted significant attention as promising 
electrical energy storage systems. Applications range from hybrid 
electric vehicles to the smart grid with increasing contributions from 
intermittent renewable energy sources. EDLCs store energy via ion 
adsorption in the electric double layer forming at the 
electrode/electrolyte interfaces in highly porous materials. Dissociated 
ions, present in the electrolyte, are transported under the combined 
influence of diffusion and electrostatic forces and are subject to 
steric effects. This storage mechanism is very fast and highly 
reversible resulting in large power density and long cycle life. 
However, charging of EDLCs results in heat generation potentially 
leading to excessively large temperatures responsible for accelerated 
aging, increasing self-discharge rates, and thermal runaway.

This seminar will review recent advances in physical modeling of 
interfacial and transport phenomena in EDLCs under equilibrium and 
charging and discharging conditions. Typical characterization method 
such as cyclic voltammetry was reproduced numerically to identify the 
dominant physical phenomena and to gain insight into experimental 
observations. In addition, a recent thermal model derived from first 
principles for EDLCs under constant-current cycling will be presented. 
In particular, irreversible Joule heating and reversible heat generation 
rates due to ion diffusion, steric effects, and changes in entropy of 
mixing will be discussed. Special effort will be made to systematically 
compare model predictions with experimental data. Finally, scaling 
analysis will be used to identify design rules for electrode and 
electrolyte for next generation EDLCs.

Bio:  Laurent Pilon received his PhD in Mechanical Engineering from 
Purdue University in 2002. He then joined the Mechanical and Aerospace 
Engineering Department at UCLA where he is now Full Professor. His 
research group is engaged in a wide range of interdisciplinary research 
projects at the intersection between interfacial and transport 
phenomena, material science, and biology for sustainable energy 
conversion, storage, and efficiency technologies. He is the recipient of 
the 2005 U.S. National Science Foundation CAREER Award, the 2008 
Bergles-Rohsenow Young Investigator Award in Heat Transfer from the 
American Society of Mechanical Engineers, and the 2009 Young Scientist 
Award in Radiative Transfer from the Journal of Quantitative 
Spectroscopy and Radiative Transfer. He was elected Senior Member of 
SPIE in 2011. He also received several teaching awards from UCLA.

Refreshments will be served at 1:30pm in ME 2054.

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