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SUMMARY:Recycling of Sodium-ion Battery Cathode Materials Using a Deep Eute
 ctic Solvent-mediated Dissolution and Precipitation
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20241018T160000
UID:2026-04-30-07-52-30@natsci.colostate.edu
DTSTAMP:20260430T075230
Description:About the Seminar:\n\nWidescale use and demand for rechargeable
  batteries must address the critical need for battery material recycling t
 o alleviate supply chain challenges and reduce the environmental impact of
  putting spent batteries in landfills.  Layered transition metal oxide ca
 thodes based on iron and manganese\, with the formula NaxFe1-yMnyO2 (NFMO
 )\, are a promising cathode material for sodium-ion batteries\, but their 
 recycling capabilities are relatively unexplored. In this talk\, we propos
 e a general recycling strategy for NFMO and derivatives by using deep eute
 ctic solvents (DESs) to dissolve spent NFMO cathode materials\, followed b
 y antisolvent recrystallization. Characterization of metal speciation in D
 ESs with in-situ UV-Vis Spectroscopy and X-ray Absorption Spectroscopy wil
 l be explored. Antisolvents\, or solvents added to reduce the solubility o
 f metal complexes in solution\, will be evaluated for their reuse capabili
 ties in DES and how efficiently metal salts can be precipitated from theÂ
  solution.   Solvent properties\, like viscosity\, vapor temperature\, a
 nd stoichiometry\, will be monitored using techniques such as vibrational 
 viscometry\, thermogravimetric analysis\, mass spectroscopy\, NMR\, and IR
  spectroscopy\, specifically identifying considerations for solvent reuse.
  Finally\, solvent influence on the speciation of metal salt precipitates 
 will be characterized with X-ray diffraction and Inductively Coupled Plasm
 a – Optical Emission Spectroscopy. 4:00 pm
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