Date/Time: 04-04-2018 - Wednesday - 05:00 PM - 07:00 PM
Yige Li1 Bo Dong1 Kazi Ahmed1 Cengiz Ozkan1 Mihri Ozkan1

1, University of California, Riverside, Riverside, California, United States

Herein, we investigated the performance of Panasonic NCR18650B battery in regular cycling, fast charging and shelf life testing using an optimized equivalent circuit model in EIS fitting. NCR 18650B battery, already commercially used in TESLA EV and many other portable electronics, still lack of global understanding in aging and monitoring SOC/SOH in real time. We employ electrochemical impedance spectroscopy (EIS) as a primary technique combining with galvanotactic intermittent titration technique (GITT) testing and thermal evaluation. With an optimized choosing of equivalent circuit in fitting, and a creative choosing of key factor and indicator in aging, we are allowed to observe the electrochemical phenomena within the cell dynamically and more in detail.

Meeting Program

5:00 PM–7:00 PM Apr 4, 2018 (America - Denver)

PCC North, 300 Level, Exhibit Hall C-E