Effect of magnetic field on the rate performance of a FeO/LiFePO composite cathode for Li-ion batteries.

Lithium iron phosphate (LiFePO or LFP) is a widely used cathode material in lithium-ion batteries (LIBs) due to its low cost and environmental safety. However, LFP faces challenges during high-rate operation and prolonged cycling. Magnetic field (MF) can enhance ionic conductivity and reduce polarization in the LFP cathode, particularly when magnetically sensitive iron oxide is added to the cathode.