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Degradation Mechanism Of Lini0.83Co0.12Mn0.05O2 Cycled At 45 OC, Hong-Yun Ma, Xiao-Hui Yao, Meng-Yao Miao, Yang Yi, Shao-Zhong Wu, Jiang Zhou
Degradation Mechanism Of Lini0.83Co0.12Mn0.05O2 Cycled At 45 OC, Hong-Yun Ma, Xiao-Hui Yao, Meng-Yao Miao, Yang Yi, Shao-Zhong Wu, Jiang Zhou
Journal of Electrochemistry
Nickel-rich layered material has been considered as the most promising one for lithium ion batteries due to its high specific capacity. To further improve the lifetime performance, it is significant to investigate the degradation mechanisms deeply. In this study, the degradation mechanism of NCM811 (LiNi0.83Co0.12Mn0.05O2) being cycled at 45oC was systematically researched. Electrochemical impedance spectrum (EIS) results showed that the SEI resistance (RSEI) and charge transfer resistance (Rct) went up to 83.41% and 211.34% before and after the NCM811 material being cycled at 45oC, respectively. The …