Al2O3包覆Li1.2Mn0.54Ni0.13Co0.13O2富锂正极材料的电化学性能

Al₂O₃包覆Li_1.2Mn_0.54Ni_0.13Co_0.13O₂富锂正极材料的电化学性能

左成, 杜云慧, 张鹏, 王玉洁, 曹海涛

Electrochemical Performance of Li_1.2Mn_0.54Ni_0.13Co_0.13O₂ Lithium-enriched Cathode Materials Coated with Al₂O₃

ZUO Cheng, DU Yunhui, ZHANG Peng, WANG Yujie, Cao Haitao

表4 不同Al₂O₃包覆量富锂正极材料等效电路的阻抗

Table 4 Impedance of equivalent circuit

Coating amount /%, mass fraction		3rd cycle			50th cycle
Coating amount /%, mass fraction	R_s/Ω·cm²	R_SEI/Ω·cm²	R_CT/Ω·cm²	R_s/Ω·cm²	R_SEI/Ω·cm²	R_CT/Ω·cm²
Pristine	16.99	77.95	109.59	12.41	278.16	417.06
0.7%	15.8	98.93	100.73	13.52	106.43	234.99
1.4%	16.2	104.97	117.01	12.74	126.43	260.64