锂离子电池正极材料低温性能衰退机理研究*
齐四清, 苏林华, 范新宇, 姜楠, 王鹏飞

Study on the Cathode Materials’ Deterioration Mechanism for Lithium-ion Batteries at Low Temperature
QI Siqing, SU Linhua, FAN Xinyu, JIANG Nan, WANG Pengfei
表2 低温-20 ℃阻抗拟合数据
材料种类 LiFePO4 LiCoO2 LiNi0.6Co0.2Mn0.2O2
固有电阻
Rb
6.36 (2.79%) 6.578 (6.58%) 6.659 (1.44%)
SEI转移RSEI 183.7 (1.64%) 11.52 (12.51%) 91.99 (2.68%)
正极转移Rct 1 265 (1.53%) 676.9 (4.67%) 483.1 (1.12%)