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SUMMARY:Leveraging Operando Characterization and Rational Interface Design
  Toward Better Batteries
DTSTART:20220316T170000
DTEND:20220316T180000
DTSTAMP:20260406T204228Z
UID:e8bbeebad5482a79495c4d2fd329c12a561352d92abf29e0d435dbb5
CATEGORIES:Conferences - Seminars
DESCRIPTION:\n\nPublic Seminar / Faculty Search for a position in Battery 
 Materials\, STI / IMX\n\nConnect to Zoom:Meeting ID: 696 7305 9441\, Passc
 ode: 238913\n\n\nDr. Eric Kazyak\, University of Michigan\n\nAbstract: \nT
 he ability to store electricity from intermittent sources such as wind and
  solar for on-demand use is a grand challenge for sustainability and the t
 ransition away from fossil fuels. Battery electric vehicles are seen as th
 e most viable route to decarbonization of the transportation sector and Li
 -ion batteries are also the current leading option for grid-scale storage.
  Together\, transportation and electricity production account for over hal
 f of global CO2 emissions. Therefore\, improving battery performance with 
 faster charging times\, increased energy density\, longer life\, and enhan
 ced safety along with decreasing costs will aid in rapid widespread implem
 entation of energy storage for both mobile and stationary applications –
  a critical step for mitigating the impacts of fossil fuels including clim
 ate change. This talk will cover a selection of my work on current state- 
 of-the-art Li-ion batteries and next-generation solid-state Li-metal batte
 ries.\nI will begin by covering a recently developed approach for enabling
  15-minute fast-charging of state- of-the-art Li-ion batteries. I will sho
 w that a nano-scale coating of a stable solid-electrolyte material on the 
 graphite electrode can eliminate Li plating by preventing undesirable side
  reactions and maintaining a low- impedance electrode/electrolyte interfac
 e. Next\, I will summarize the potential of solid-state Li-metal batteries
  to enable a step-increase in energy density\, along with the current inte
 rface and manufacturing challenges associated with implementation. Operand
 o video microscopy will be utilized to visualize 1) how Li filaments can p
 enetrate across solid electrolytes under high current densities and lead t
 o short-circuiting\, and 2) how Li nucleates and grows at the current coll
 ector/electrolyte interface in anode-free solid-state batteries. I will pa
 y particular attention to the coupling between electrochemistry and mechan
 ics at these buried solid/solid interfaces\, and the role it plays in cell
  performance/failure. These examples will highlight the importance of oper
 ando characterization\, mechanistic understanding\, and interfacial engine
 ering for advancing next- generation battery technologies from the laborat
 ory to the marketplace.\n\nBio: \nEric Kazyak is currently a Postdoctoral 
 Fellow at the University of Michigan. He received his Bachelor’s degree 
 in mechanical engineering at the University of Maryland in 2014\, and his 
 Ph.D. in mechanical engineering at the University of Michigan under Prof. 
 Neil Dasgupta in 2020. His doctoral work focused on understanding and over
 coming the challenges of next-generation Li metal anodes for high energy d
 ensity batteries\, with a focus on interface chemistry and design. He was 
 the recipient of an NSF Graduate Research Fellowship and has authored/co-a
 uthored more than 30 peer-reviewed journal articles in the fields of energ
 y storage and conversion. His current work is focused primarily on two top
 ics that he is passionate about: 1) Enabling fast-charging and extreme con
 ditions in large-format lithium-ion batteries for electric vehicles\, and 
 2) Improving manufacturability\, cost\, and rate capability of next-genera
 tion solid-state Li metal batteries.\n\n
LOCATION:https://epfl.zoom.us/j/69673059441?pwd=NE9GUnlJZXNBUGlhMGNBY20ral
 BGQT09
STATUS:CONFIRMED
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