Electrification of automobiles and fossil-fuel displacement by renewable energy sources are crucial to combating climate change.  The successful adoption of these clean energy technologies could benefit from integration strategies such as the sourcing/sinking energy to/from the electric grid known as vehicle-to-grid (V2G) and grid-to-vehicle (G2V), respectively.  Electric vehicles are typically parked 90% of the day and thus could be used as storage batteries to shift energy between high and low demand time of the day. However, this strategy and the inexorable proliferation of electric vehicles (EVs) and renewable power plants in general imposes a mounting burden on the batteries essential to these systems.  Understanding and mitigating battery degradation is key to improving the durability of electric vehicles and the reliability of power grids.  Funded under DOT/EVTC, then ONR/APRISES, this ongoing research is delving into the effect of grid-vehicle interactions on the performance of Li-ion batteries facilitating the determination of the causes of cell deterioration and the accurate prediction of capacity loss during real-world use.  The knowledge gained was used to suggest practices that will improve property retention.  Research conducted for this project is completed in the Electrochemical Power Systems Laboratory.

Point Person: Matthieu Dubarry

 

Papers & Proceedings