D. Choi, N. Shamim, E. Thomsen, Q. Huang, A.J. Crawford, V.V. Viswanathan, D.M. Reed, V.L. Sprenkle
Pacific Northwest National Laboratory,
United States
Keywords: electrochemical energy storage, stationary energy storages, Li-ion batteries, commercial cells
Summary:
Electrochemical energy storages (EES) are being actively deployed as more renewable energy generation are integrated into the grid infrastructure. Among various EES, Li-ion batteries currently share more than 80% of EES utilized but reliability and performance needs to be clearly evaluated and compared as new chemistries and formats are being developed for stationary energy storage. In this presentation, performance of commercial Li-ion battery cell chemistries under standardized grid duty cycle testing protocols developed by DOE-OE will be presented. The lifecycle derived from capacity, round trip efficiency (RTE), resistance, charge/discharge energy and total utilized energy of various battery chemistries will be compared. Furthermore, effect of aging, frequency regulation (FR), peak shaving (PS) and electric vehicle (EV) drive cycles on degradation mechanisms of different battery chemistries will be discussed.