锂离子电池正极材料低温性能衰退机理研究
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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
LiFePO
4
LiCoO
2
LiNi
0.6
Co
0.2
Mn
0.2
O
2
固有电阻
R
b
/Ω
6.36 (2.79%)
6.578 (6.58%)
6.659 (1.44%)
SEI转移
R
SEI
/Ω
183.7 (1.64%)
11.52 (12.51%)
91.99 (2.68%)
正极转移
R
ct
/Ω
1 265 (1.53%)
676.9 (4.67%)
483.1 (1.12%)