Effect of impurities in FePO₄ raw materials on the performance of LiFePO₄ cathode materials.

ABSTRACT: Here, the effects of Mg²⁺, Mn²⁺, and SO₄^2- impurities in FePO₄ raw materials on the properties of LFP were studied by converting impurities into doping elements. The results indicate that due to differences in ionic radius and doping methods, these three impurities have varying impacts on the performance of LFP. 0.2-0.6% Mg²⁺ doping can significantly improve the high-rate capacity and cycle performance of LFP materials. At 5 C, the discharge specific capacity reaches 122.39 mAh/g, respectively, and the discharge specific capacity retention rate is 94.7% after 500 cycles. By contrast, Mn²⁺ doping leads to a significant decline in the rate performance of LFP. SO₄^2- is decomposed and reduced dur

SUBMITTER: Ma G 

PROVIDER: S-EPMC12041172 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature