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SUMMARY:The quest for cheap\, sustainable and high-performance rechargeabl
 e batteries: The case of sodium-ion batteries explored with Nuclear Magnet
 ic Resonance and ab initio simulations - Raphaële Clément (Department of
  Chemistry)
DTSTART:20160114T131000Z
DTEND:20160114T140000Z
UID:TALK63171@talks.cam.ac.uk
CONTACT:Evros Loukaides
DESCRIPTION:Will cheap\, sustainable sodium-ion batteries soon replace the
  current lithium-ion battery technology? One of the main challenges to be 
 overcome for the commercialisation of sodium-ion batteries lies in finding
  better sodium-ion cathode materials. Sodium manganese oxides typically ha
 ve a high energy density per unit volume but undergo a number of phase tra
 nsitions upon electrochemical cycling which limit their cycle life. In thi
 s talk we will see how solid-state NMR and ab initio (Density Functional T
 heory) simulations can be used in combination to understand the structural
  and electronic processes occurring upon electrochemical cycling of sodium
  manganese oxides and to devise ways of improving the performance of this 
 family of compounds. In particular\, we have found that dopant species on 
 the transition metal lattice enhance the structural stability and the elec
 trochemical properties of these cathode materials.
LOCATION:The Richard King Room\, Darwin College
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