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SUMMARY:Challenges in Designing New Batteries and Supercapacitators for a 
 Low Carbon Economy - Professor Clare P Grey - University of Cambridge ( De
 partment of Chemistry\, University of Cambridge)
DTSTART:20210128T181500Z
DTEND:20210128T194500Z
UID:TALK155731@talks.cam.ac.uk
CONTACT:Miroslava Novoveska
DESCRIPTION:Link to join the YouTube live stream:\n\nhttps://youtu.be/M-kQ
 N-7pNhM\n\nCheaper and more efficient/effective ways to convert and store 
 energy are required to reduce CO2 emissions. Batteries\, supercapacitors a
 nd fuel cells will play an important role\, but significant advances requi
 re that we understand how these devices operate over a wide range of time 
 and lengthscales. The development of light\, long-lasting rechargeable bat
 teries has been an integral part of the portable electronics revolution. T
 his revolution has transformed the way in which we communicate and transfe
 r and access data globally\, and has impacted developing nations as much a
 s industrial societies. The invention of the lithium-ion (Li-ion) battery\
 , a rechargeable battery in which lithium ions (Li+) shuttle between two m
 aterials (LiCoO2 and graphitic carbon) has been an integral part of these 
 advances. Rechargeable batteries are now poised to play an increasingly im
 portant role in transport and grid applications\, but the introduction of 
 these devices comes with different sets of challenges. Importantly\, funda
 mental science is key to producing non-incremental advances and to develop
  new strategies for energy storage and conversion. This talk will describe
  existing battery technologies and how they can be used to increase energy
  efficiency in transport and grid applications.  I will then describe our 
 work in the development of methods that allow devices to be probed while t
 hey are operating (i.e.\, in-situ). This allows\, for example\, the transf
 ormations of the various cell components to be followed under realistic co
 nditions without having to disassemble and take apart the cell. To this en
 d\, the application of new in and ex-situ Nuclear Magnetic Resonance (NMR)
 \, magnetic resonance imaging (MRI) and X-ray diffraction approaches to co
 rrelate structure and dynamics with function in lithium-ion and lithium ai
 r batteries and supercapacitors will be described. The in-situ approach al
 lows processes to be captured\, which are very difficult to detect directl
 y by ex-situ methods. For example\, we can detect side reactions involving
  the electrolyte and the electrode materials\, sorption processes at the e
 lectrolyte-electrode interface\, and processes that occur during extremely
  fast charging and discharging.
LOCATION:Online
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