MSE Seminar Series: Jun Liu
Friday, May 8, 2015
1:00 p.m.-2:00 p.m.
Room 2110, Chemical and Nuclear Engineering Bldg.
301 405 5240
DuPont Activity in Developing High Voltage Cathodes for Li Ion Battery
DuPont Experimental Station
Lithium ion batteries have revolutionized portable electronic devices in the past two decades, and are primed to make a great impact on transportation technology and green grid energy storage. Accordingly, this new application demands that lithium ion batteries offer high energy and high power capabilities. One way to achieve higher energy and high power densities in Li ion batteries is to incorporate cathodes having significantly higher operational voltage. This approach is particularly attractive for electric vehicle applications because fewer high voltage cells are needed in the battery packs used as power sources for the vehicles. The assembly of the packs is simplified, less hardware is required (further increasing the system specific energy) and cost is lowered. However, high voltage cathodes usually suffer from relatively poor cycling performance/rate capability. This presentation will focus on DuPont technical strategies in choosing / developing / optimizing high voltage cathode systems.