Brown University School of Engineering

The Good, the Bad, and the Ugly of Lithium-Air Batteries

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Thursday, May 01, 2014 4:00pm - 5:00pm

Venkat Viswanathan, MIT (Starting as Assistant Professor at CMU, 2014) Li-air batteries have a much higher theoretical gravimetric energy storage density than all other candidate battery chemistries and this has led to a strong interest in developing such batteries for powering EVs, enabling driving ranges comparable to gasoline powered automobiles. However, many fundamental challenges need to be solved before these batteries can become practical. I will address three issues, based on density functional theory calculations and electrochemical modeling, relating to the practicality of non-aqueous Li-air batteries - (1) Thermodynamic efficiency, (2) Deep discharge and (3) Rechargability of non-aqueous Li-air batteries.