Accelerated cycle life testing and capacity degradation modeling of LiCoO2-graphite cells

By Weiping Diao, Saurabh Saxena, Michael G. Pecht. Journal of Power Sources, 2019

158 citations recorded by the source corpus.

Abstract Accelerated cycle life testing of lithium-ion batteries is conducted as a means to assess whether a battery will meet its life cycle requirements. This paper presents a study to identify optimal accelerated cycle testing conditions for LiCoO2-graphite cells. A full factorial design of experiment with three stress factors—ambient temperature (10 °C, 25 °C, 45 °C, 60 °C), discharge current rate (C-rate, 0.7C, 1C, 2C), and charge cut-off C-rate (C/5, C/40)—is used to study the effects of these stress factors on battery capacity fade and to obtain the data necessary for decision making. An empirical accelerated degradation model is then developed to capture the characteristics of the two-stage capacity degradation process, along with an accelerated test planning approach.

Subfields: Automotive Engineering, Electrical and Electronic Engineering, Safety, Risk, Reliability and Quality

View Paper: https://www.semanticscholar.org/paper/e83a3c47428d34f77925182c695906fe2eaaf567

Citations in the corpus

• Review—"Knees" in Lithium-Ion Battery Aging Trajectories (2022, unknown): “22 is summarized in Table SI; data was obtained via direct access to the corresponding databases when possible 37,55,69,151,160 or via WebPlotDigitizer .”