Morphology Effect on Enhanced Li⁺-Ion Storage Performance for Ni^2+/3+ and/or Co^2+/3+ Doped LiMnPOCathode Nanoparticles

The electrochemical performance of Li(Mn, M)PO(M = Co^2+/3+, Ni^2+/3+) was investigated with regard to the particle morphology. Within a controlled chemical composition, Li(MnoiPO the resultant cathode exhibited somewhat spherical-shaped nanocrystalline particles and enhanced Li⁺-ion storage, which was even better than the undoped LiMnPO up to 16% in discharge capacity at 0.05 C. The outstanding electrochemical performance is attributed to the well-dispersed spherical-shaped particle morphology, which allows the fast Li⁺-ion migration during the electrochemical lithiation/delithiation process, especially at high current density.