Enhancement of cathode superior kinetics and Li-storage properties of LiMn0.5Fe0.5PO4@C cathode materials by Ni doping strategy

LiMn0.5Fe0.5PO4's practical application is limited by its charge transfer constraints, which hinder its ability to achieve high magnification and long cycle life. Here, Ni doping was used to improve the microscopic morphology of LiMn0.5Fe0.5PO4 with smaller particles and larger pore sizes, thus improving its conductivity/ionic conductivity and electrochemical reaction kinetics. The sample doped with 2 mol% Ni (Ni-2) exhibited good high-rate performance and cycling stability compared to the pristine sample without Ni doping (Ni-0). The addition of nickel establishes the basis for the production of LiMn0.5Fe0.5PO4 material with improved stability and performance. It also offers a crucial benchmark value to encourage the use of this lithium-ion battery cathode material in power-type batteries and large-scale energy storage systems.