Improved cycling performance of 5Â V spinel LiMn1.5Ni0.5O4 by amorphous FePO4 coating

► FePO4 coating layer enhances the cycling stability of LiMn1.5Ni0.5O4. ► The optimum coating content of FePO4 was found to be 1 wt.%. ► FePO4 separation can effectively suppress the formation of thick SEI layer. ► FePO4 modification enhances surface kinetics of LiMn1.5Ni0.5O4 material.