Journal of The Electrochemical Society
Time and Temperature Dependent Aging Mechanisms in Commercial Lithium-Ion Cells with SiO x /Graphite Anodes
This work addresses the limited understanding of how changes in SiO x /graphite anodes and the N/P ratio induced by aging influence the temperature-dependent transition between degradation mechanisms. It provides insight into the potentially evolving risk of lithium plating and its implications for the safe and durable operation of batteries. Commercial 3.5 Ah Li-ion 18 650 cells with SiO x /graphite anodes (∼2.5 wt.% Si) and Ni-rich LiNi 1− x − y Mn x Co y O 2 cathodes were systematically aged in the temperature r …