LITHIUM MANGANESE IRON PHOSPHATE-BASED PARTICULATE FOR USE IN CATHODE OF LITHIUM BATTERY, LITHIUM MANGANESE IRON PHOSPHATE-BASED POWDERY MATERIAL CONTAINING THE SAME, AND METHOD FOR MANUFACTURING THE POWDERY MATERIAL

摘要

To provide a lithium manganese iron phosphate-based particulate for use in a cathode of a lithium battery, having high energy density, good thermal stability, and excellent charge-discharge cycling stability.SOLUTION: A lithium manganese iron phosphate-based particulate for use in a cathode of a lithium battery includes: a core portion containing a plurality of first lithium manganese iron phosphate-based nanoparticles which are bound together and which have a first mean particle size; and a shell portion enclosing the core portion and containing a plurality of second lithium manganese iron phosphate-based nanoparticles which are bound together and which have a second mean particle size larger than the first mean particle size of the first lithium manganese iron phosphate-based nanoparticles of the core portion.SELECTED DRAWING: Figure 1