使用LiFePO_4-LiMn_2O_4混合正极的锂离子电池的性能

将LiFePO4和Li Mn2O4按78∶9的质量比混合,并用作锂离子电池正极材料。使用该混合正极的14500型电池适宜的充放电电压范围为4.20～2.50 V,在常温下以1.0C循环250次,容量保持率为87.47%;在60℃下以1.0C循环12次,容量保持率为84.62%。电池以100%SOC在60℃下贮存7 d后,容量保持率为82.50%,容量恢复率为89.01%。

The performance of Li-ion battery using LiFePO_4-LiMn_2O_4 mixed cathode

LiFePO_4 and LiMn_2O_4 was mixed with the mass ratio of 78:9 and used as cathode material of Li-ion battery. The pro-per charge-discharge voltage range of 14500 type battery using the mixed cathode was 4.20～2.50 V. When 1.0 C cycle at room temperature,the capacity retention rate was 87.47% after 250 cycles,when 1.0 C cycle at 60 ℃,the capacity retention rate was 84.62% after 12 cycles. When the battery was stored 7 d at 60 ℃ with 100% SOC,the capacity retention rate was 82.50%,the capacity recovery rate was 89.01%.