%0 Journal Article
%T Nano-/Microhierarchical-Structured LiMn0.85Fe0.15PO4 Cathode Material for Advanced Lithium Ion Battery
%J -
%D 2018
%R https://doi.org/10.1021/acsami.7b04193
%X Nano/microhierarchical-structured LiMn0.85Fe0.15PO4/C cathode materials were prepared by solvothermal synthesis combined with spray pyrolysis. XRD patterns and HRTEM images indicate that the LiMn0.85Fe0.15PO4/C are well crystallized and no impurity is observed. The as-prepared LiMn0.85Fe0.15PO4/C porous spheres (0.5¨C11 ¦Ìm) are accumulated by primary nanoparticles (¡«50 nm in width, 50¨C250 nm in length). Adopting sucrose as a carbon source, the cathode delivers a reversible discharge capacity of 171.2 mAh g¨C1 at 0.1C, almost exactly its theoretical capacity (¡«170 mAh g¨C1). Moreover, the composite exhibits high cycle stability without apparent capacity fading after 100 cycles at rates of 0.1C and 1C. The outstanding electrochemical performances are partially due to Fe2+ substitution and carbon coating, which improve the electrical conductivity, and importantly, due to its nano-/microhierarchical structure where primary nanoparticles exhibit high electrochemical activity, abundant mesopores benefit electrolyte penetration and the hierarchical structure ensures cycling stability
%U https://pubs.acs.org/doi/10.1021/acsami.7b04193