METHOD FOR PRODUCING MICROPARTICLES, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY CELL, POSITIVE ELECTRODE ACTIVE MATERIAL, LITHIUM ION SECONDARY CELL USING SAME, AND SOURCE EMULSION FOR PRODUCING MICROPARTICLES

摘要

Provided is a method for producing microparticles, the method being characterized in being provided with a step for producing a source emulsion (13) that is a water-in-oil emulsion obtained by dispersing a source solution containing lithium ions and source metal ions other than those of lithium and silicon as droplets in a flammable liquid that contains an organosilicon compound, a step for spraying this source emulsion in the form of droplets, and a step for forming microparticles (27) by combusting the flammable liquid in the droplets (21). The source emulsion (13) may contain a surfactant.