A Study on the Influence of Lithium Plating on Battery Degradation

Energies

TruongQuang Dinh¹  James Marco¹  UpenderRao Koleti¹  Chaou Tan¹  Sanghamitra Moharana¹  Ashwin Rajan¹ 

[1] Warwick Manufacturing Group, The University of Warwick, Coventry CV4 7AL, UK;

关键词: lithium plating;    fast charging;    lithium-ion;    voltage relaxation profile;    battery management system;   

DOI  :  10.3390/en13133458

来源: DOAJ

【 摘 要 】

Within Li-ion batteries, lithium plating is considered as one of the main reasons behind the capacity fade that occurs during low temperature and fast charging conditions. Previous studies indicate that plating is influenced by the levels of loss of lithium inventory (LLI) and the loss of active material (LAM) present in a battery. However, it is not clear from the literature on how lithium plating influences battery degradation in terms of LAM and LLI. Quantifying the undesirable impacts of lithium plating can help in understanding its impact on battery degradation and feedback effects of previous lithium plating on the formation of present plating. This study aims to quantify the degradation modes of lithium plating: LLI, LAM at the electrode level. A commercial Li-ion cell was first, aged using two different cases: with and without lithium plating. Second, a degradation diagnostic method is developed to quantify the degradation modes based on their measurable effects on open-circuit voltage (OCV) and cell capacity. The results highlight that LAM_NE and LLI levels under the fast charge profile are increased by 10% and 12%, respectively, compared to those under the less aggressive charge profile. Further, limitations of the degradation analysis methods are discussed.

【 授权许可】

Unknown